JP2024501018A - Cosmetic composition and method of use for ideal skin - Google Patents

Abstract

A skin tightening composition for application to the skin to provide an instant and dramatic improvement in the appearance of the skin. Skin tightening compositions typically contain at least 5 wt. % of one or more hydrophobic film-forming polymers and from about 1 to about 40 wt. % of one or more thickening agents and about 30 to about 85 wt. % of one or more volatile hydrocarbon oils; and about 5 to about 40 wt. % water and at least 2 wt. % of one or more hydrophilic film forming agents. [Selection diagram] Figure 1

Description

CROSS-REFERENCES TO RELATED APPLICATIONS This application has the benefit of U.S. Nonprovisional Application No. 17/136,353, filed on December 29, 2020, and French Patent Application No. 2011,701, filed on March 1, 2021. and are incorporated herein by reference in their entirety.

The present disclosure instantly improves skin appearance by reducing the appearance of wrinkles, tear bags, pores, and skin imperfections such as scars, dark spots (and uneven skin tone), dark circles, and roughness. and relates to skin tightening compositions for application to the skin to provide dramatic improvement.

As skin ages, it produces less collagen and elastin. For example, after the age of 20, the amount of collagen produced in a person's skin decreases by about 1% every year. As a result, the skin becomes thinner and more brittle. Inevitably, wrinkles, fine lines around the corners of the eyes, age spots, and tear bags begin to form.

Consumers often desire to improve the appearance of such age-related skin imperfections, preferably with instant results. Many consumer products and procedures are available that are dedicated to concealing and reducing wrinkles. Some products and procedures are simple and inexpensive, such as applying makeup, especially primer or colored foundation, to cover the skin (thereby covering and/or filling wrinkles and providing a smoother appearance). do). Much more expensive and dramatic procedures such as surgical face lifts and Botox® injections are also used to reduce the appearance of wrinkles. However, many consumers cannot afford or are unwilling to undergo such drastic cosmetic procedures. There are many lotions and creams that are formulated to hydrate the skin and make it more supple, thereby reducing the appearance of wrinkles. Some of these products contain active ingredients, such as niacinamide, that help repair and revive the skin over time. Unfortunately, however, all of these products and procedures have drawbacks.

Make-up products are often visible, have minimal textural benefits, and have no long-lasting effect on the skin. After the makeup is removed, the skin looks the same as before the makeup was applied. Common skin care products can have chronic, acute or both effects on the skin. Hydration and optical effects are common acute benefits, but these benefits quickly deplete over time.

Attempts have been made to develop new categories of products to improve skin appearance without the drawbacks of existing products and procedures. One such family of products can be generally classified as "sticky, shrinkable film-forming polymers." Film-forming polymers are chemical compositions that, when applied to the skin, leave a soft, cohesive, continuous coating. A selected group of film-forming polymers are also skin-adhesive and contractile.

Typically, emulsion-based formulations developed to conceal fine lines, wrinkles, and under-eye tear bags and dark circles contain hydrophobic film-forming agents in the external oil phase. The present invention differs from the prior art due to the presence of a hydrophilic film former in the aqueous phase of the w/o emulsion which enhances the mechanical integrity of the resulting film, a feature not present in the prior art. different.

The present invention aims to improve the performance of conventional membrane technologies involving only membrane formers in the oil phase. Additional film-forming agents in the aqueous phase strengthen the film after application, making it mechanically more robust and lasting longer.

The present disclosure reduces cosmetic skin imperfections such as, for example, fine lines, wrinkles, tear bags, sagging skin, pores, and skin imperfections such as scars, dark spots (and uneven skin tone), dark circles, and roughness. The present invention relates to a skin tightening composition for providing an instantaneous and dramatic improvement in the appearance of the skin so that the results last for at least one day.

A skin tightening composition according to one aspect of the present disclosure typically includes:
A) Oil phase containing:
a) At least 5 wt. % of one or more hydrophobic film-forming polymers;
b) about 1 to about 40 wt. % of one or more thickeners;
c) about 30 to about 85 wt. % of one or more volatile hydrocarbon oils;
B) an aqueous phase comprising:
a) About 5 to about 40 wt. %Water of;
b) at least 2 wt. with a Tg of less than about 80°C. % of one or more hydrophilic film-forming agents;
including;
All weight percentages are based on the total weight of the skin tightening composition.

The composition typically provides skin tightening by smoothing wrinkles, under tear sacs, and conceals dark circles, but also covers imperfections (pimples) when applied to the skin.

In one or more embodiments, the composition comprises trimethylsiloxysilicate, acrylate/isobornyl acrylate copolymer, acrylic acid/isobutyl acrylate/isobornyl acrylate copolymer, acrylate/stearyl methacrylate copolymer, acrylate/ Polytrimethylsiloxymethacrylate copolymer, C30-45 alkyldimethylsilylpolypropylsilsesquixane, trimethylsilsesquixane, polypropylsilsesquixane olypropylsilsesquixane), acrylate/dimethicone copolymer, octylacrylamide/acrylate /butylaminoethyl methacrylate copolymer, VA/butyl maleate/isobornyl acrylate copolymer, acrylate/t-butylacrylamide copolymer, polyvinylpyrrolidone/vinyl acetate copolymer, triacontanyl PVP copolymer, may include one or more hydrophobic film-forming polymers selected from acrylate/dimethylaminoethyl methacrylate copolymers, norbornene/tris(trimethylsiloxy)silylnorbornene copolymers, styrene/butadiene copolymers, and mixtures thereof. .

In some embodiments, the one or more thickeners include polyamide-8, hydrogenated styrene/isoprene copolymer, nylon-611/dimethicone copolymer, dimethicone/vinyl dimethicone crosspolymer, dimethicone crosspolymer, VP / eicosene copolymer, silicone elastomer, emulsified silicone elastomer, fumed silica, hydrophobically modified silica, silica silylate, zeolite, natural clay, synthetic clay, kaolin, hectorite, organically modified hectorite, pentaerythrityl tetraisosteare rate (and) disteardimonium hectorite (and) propylene carbonate, activated clay, disteardimonium hectorite, stearalkonium hectorite, quaternium-18 bentonite, quaternium-18 hectorite, benzalkonium bentonite, clay and mixtures thereof.

In one or more embodiments, the one or more volatile hydrocarbon oils are selected from isoparaffins, isohexadecane, isododecane, isodecane, undecane, tridecane, dodecane, and mixtures thereof.

In one or more embodiments, the one or more hydrophilic film forming agents having a Tg of less than about 80° C. are selected from polyurethanes, hydrophilic acrylate copolymers, polyvinyl alcohols, and mixtures thereof.

In some embodiments, the one or more hydrophilic film-forming agents are present in an amount of about 2 wt.% based on the total weight of the skin tightening composition. % to about 45wt. %exist.

Additionally or alternatively, the skin tightening composition may include one or more inorganic pigments. In one or more embodiments, the one or more inorganic pigments include titanium dioxide, zirconium oxide, cerium oxide, zinc oxide, iron oxide, titanium dioxide coated mica, iron oxide coated mica, titanium dioxide coated alumina, iron oxide coated alumina. , aluminum hydroxide, chromium oxide, manganese violet, ultramarine, chromium hydrate, navy blue, aluminum powder, copper powder, silver powder, gold powder, barium sulfate, carbon black, and mixtures thereof.

Additionally or alternatively, the skin tightening composition may include non-volatile fatty compounds. In one embodiment, the skin tightening composition comprises about 0.1 to about 20 wt.% based on the total weight of the skin tightening composition. % of non-volatile fatty compounds. In one or more embodiments, the one or more non-volatile fatty compounds include polyolefins (petroleum), waxes, squalane, squalene, hydrogenated polyisobutenes, hydrogenated polydecenes, polybutenes, mineral oils, pentahydrosqualene, dimethicone, and the like. selected from a mixture.

Additionally or alternatively, the skin tightening composition may include a nonionic surfactant.

Additionally or alternatively, the skin tightening composition may include a filler. In one or more embodiments, the one or more fillers are nylon-12, cellulose, methacrylate crosspolymers (e.g., methyl methacrylate crosspolymers), silicone powders (e.g., polymethylsilsesquioxane), selected from sodium acrylate crosspolymer-2, and mixtures thereof.

Additionally or alternatively, the skin tightening composition may include one or more active compounds.

According to another aspect of the disclosure, a skin tightening composition comprises:
A) Oil phase containing:
a) At least 5 wt. % of one or more hydrophobic film-forming polymers;
b) about 1 to about 40 wt. % of one or more thickeners;
c) from about 30 to about 85 wt. selected from isoparaffins, isohexadecane, isododecane, isodecane, undecane, tridecane, dodecane, and mixtures thereof. % of one or more volatile hydrocarbon oils;
B) an aqueous phase comprising:
a) About 5 to about 40 wt. %Water of;
b) at least 2 wt. % of one or more hydrophilic film-forming agents;
may include,
All weight percentages are based on the total weight of the skin tightening composition.

According to another aspect of the disclosure, a skin tightening composition comprises:
a) At least 5 wt. % of one or more hydrophobic film-forming polymers;
b) about 1 to about 40 wt. % of one or more thickeners;
c) about 30 to about 85 wt. % of one or more volatile hydrocarbon oils;
d) about 5 to about 40 wt. %Water of;
e) at least 2 wt. with a Tg of less than about 80°C. % of one or more hydrophilic film-forming agents;
may include;
All weight percentages are based on the total weight of the skin tightening composition.

Methods for improving the appearance of skin according to still further aspects of the present disclosure typically include applying a skin tightening composition of the present disclosure to the skin. Methods to improve the appearance of the skin include
- reducing the appearance of fine lines on the skin;
- reducing the appearance of skin wrinkles;
- improving skin tone and/or improving skin tone uniformity;
- improving skin softness and/or smoothness;
- reducing the appearance of tear sacs;
- reducing the appearance of dark circles around and/or under the eyes;
- reducing the appearance of pores and/or scars; and/or - increasing skin radiance, luminosity, and/or shine;
May include.

Implementations of the present technology will now be described, by way of example only, with reference to the accompanying drawings.

Figure 3 graphically depicts an undisturbed membrane, crazing of the membrane under uniaxial stretching, and cracking of the membrane under uniaxial stretching.

It is to be understood that the various aspects are not limited to the arrangements and instrumentalities shown in the drawings.

The present disclosure reduces cosmetic skin imperfections such as, for example, fine lines, wrinkles, tear bags, sagging skin, pores, and skin imperfections such as scars, dark spots (and uneven skin tone), dark circles, and roughness. Relating to a skin tightening composition for providing an instant and dramatic improvement in the appearance of the skin, such that the results last for at least one day.

The inventors have discovered that by incorporating hydrophilic film formers into the aqueous phase, the film is strengthened, mechanically more robust and longer lasting after application. Unlike other products, the film formed on the skin is particularly long-lasting and not prone to drying, whitening, cracking or peeling. Instead, they maintain flexibility (elasticity), durability, and comfort. Additionally, the composition (and resulting film) hydrates, protects, and conceals the underlying skin.

A skin tightening composition according to one aspect of the present disclosure typically includes:
A) Oil phase containing:
a) At least 5 wt. % of one or more hydrophobic film-forming polymers;
b) about 1 to about 40 wt. % of one or more thickeners;
c) about 30 to about 85 wt. % of one or more volatile hydrocarbon oils;
B) an aqueous phase comprising:
a) About 5 to about 40 wt. %Water of;
b) at least 2 wt. with a Tg of less than about 80°C. % of one or more hydrophilic film-forming agents;
including;
All weight percentages are based on the total weight of the skin tightening composition.

The composition typically provides skin tightening by smoothing wrinkles, under tear sacs, and conceals dark circles, but also covers imperfections (pimples) when applied to the skin.

The skin tightening composition may be in the form of an emulsion, such as a water-in-oil emulsion or an oil-in-water emulsion. In some cases, water-in-oil emulsions are preferred.

Suitable ingredients, such as those listed below, may be included in the formulation of the skin tightening composition depending on the particular combination of other ingredients, the form of the skin tightening composition, and/or the use of the formulation. , or may be excluded from the formulation.

Film-forming polymer(s)
Hydrophobic Film-Forming Polymer The hydrophobic film-forming polymer is present in the oil phase of the skin tightening composition. The skin tightening composition includes one or more hydrophobic film-forming polymers. For example, the film-forming polymer may contain about at least 5 wt. % in the skin tightening composition.

The total amount of hydrophobic film-forming polymer in the cosmetic composition can vary, but typically is at least 5 wt.% based on the total weight of the cosmetic composition. %. More specifically, the total amount of hydrophobic film-forming polymer is at least 5 wt., based on the total weight of the cosmetic composition. %~about 40wt. %, at least 5 wt. % to about 30wt. %, at least 5 wt. % to about 25wt. %. Additionally, the total amount of hydrophobic film-forming polymer is about 5 wt.% based on the total weight of the cosmetic composition. % to about 30wt. %, about 5wt. % to about 25wt. %, about 5wt. %, ~about 20wt. %, about 5wt. % to about 15wt. %, about 6wt. % to about 30wt. %, about 6wt. % to about 25wt. %, about 6wt. %~about 20wt. %, about 6wt. % to about 15wt. %, or about 7 wt. % to about 14wt. %.

In some cases, the total amount of film-forming polymer is substantially acrylate/isobornyl acrylate copolymer. For example, the film-forming polymer may consist essentially of or consist of an acrylate/isobornyl acrylate copolymer. In other examples, the skin tightening composition may include any of the amounts of acrylate/isobornyl acrylate copolymer listed above for the film-forming polymer(s).

The film-forming polymer may include one or more film-forming polymers in addition to the acrylate/isobornyl acrylate copolymer. The term "film-forming polymer" or "film-forming agent" by itself or in the presence of auxiliary film-forming agents refers to a macroscopically continuous deposit, preferably an aggregated deposit, on a support, in particular a keratin material. even better, such that the deposit can be separated and independently manipulated, for example when the deposit is prepared by pouring onto a non-stick surface, such as a Teflon-coated or silicone-coated surface. It means a polymer capable of forming deposits with cohesive and mechanical properties.

In some cases, the total amount of film-forming polymer is substantially acrylate/stearyl methacrylate copolymer. For example, the film-forming polymer may consist essentially of or consist of an acrylate/stearyl methacrylate copolymer. In other examples, the skin tightening composition may include any of the amounts of acrylate/stearyl methacrylate copolymer listed above for the film-forming polymer(s).

The term "hydrophobic film-forming polymer" refers to a film-forming polymer that has no or limited affinity for water and is, in this respect, unsuitable for formulation in the form of a solute in an aqueous medium. In particular, the term "hydrophobic polymer" refers to a polymer that has a solubility in water at 25°C of less than 1% by weight.

Additional film-forming polymers may include or be selected from any of the film-forming polymers described in PCT/EP2020/068143, incorporated herein in its entirety for all purposes. .

The additional film-forming polymer(s) may be one or more of the at least one polymer surface stabilized with at least one stabilizer, preferably in an anhydrous medium, as described in PCT/EP2020/068143. It may also be in an oil dispersion containing the particles. For example, the aqueous dispersion may include a hydrocarbon-based liquid fatty material. The dispersion may consist of particles that are generally spherical and contain at least one surface-stabilizing polymer in an anhydrous medium. Optionally, the oily dispersion comprises from 60% to 98% by weight, in particular from 75% to 96%, of monomers a) to c), as discussed below, relative to the total weight of polymers contained in said dispersion. including. The polymer particles i) of dispersion (A) preferably have a number average size in the range from 5 to 500 nm, in particular from 10 to 400 nm, even better from 20 to 300 nm. The final particle size is preferably greater than 100 nm. In particular, the number average size is in the range 100nm to 500nm, more specifically in the range 150nm to 400nm, even more specifically in the range 160nm to 300nm.

The film-forming polymer or particles thereof may be selected from one or more of the following:
a) an ethylenic homopolymer of (C ₁ -C ₄ )alkyl (C ₁ -C ₁₈ )(alkyl)acrylate, preferably an ethylenic homopolymer of (C ₁ -C ₁₈ )alkyl (meth)acrylate;
b) an ethylenic copolymer of (C ₁ -C ₄ )alkyl (C ₁ -C ₁₈ )(alkyl)acrylate, preferably (C ₁ -C ₁₈ )alkyl (meth)acrylate, and (C ₁ -C _{18 )} ) (alkyl)acrylic acid, preferably an ethylenic copolymer of (meth)acrylic acid; and c) an ethylenic copolymer of (C ₁ -C ₄ )alkyl (C ₁ -C ₁₈ )(alkyl)acrylate, preferably is a (C ₁ -C ₁₈ )alkyl (meth)acrylate ethylenic copolymer.

式（Ｉ）において：
－Ｒは、水素原子又はメチルなどの（Ｃ_１－Ｃ_４）アルキル基を表し、
－Ｒ’は、メチル又はエチルなどの（Ｃ_１－Ｃ_１８）アルキル基を表し、好ましくは式（Ｉ）のモノマーは、メチルアクリレートなどのＣ_１－Ｃ_１８アルキルアクリレートである。 In at least one preferred embodiment of the invention, the membrane-forming polymer is an ethylenic acrylate homopolymer obtained from the polymerization of identical monomers having a structure according to formula (I) below.

In formula (I):
-R represents a hydrogen atom or a (C ₁ -C ₄ ) alkyl group such as methyl,
-R' represents a (C ₁ -C ₁₈ )alkyl group, such as methyl or ethyl, and preferably the monomer of formula (I) is a C ₁ -C ₁₈ alkyl acrylate, such as methyl acrylate.

式（ＩＩ）において、Ｒは先に定義した通りであり、特に式（ＩＩ）のモノマーはアクリル酸である。アクリル酸の量は、粒子ｉ）のモノマーの重量に対して０．１％～１５重量％の範囲であり、粒子ｉ）のポリマーは、特に、アクリル酸と、特にメチル（メタ）アクリレート及びエチル（メタ）アクリレートから選択される１又は複数のＣ_１－Ｃ_４アルキル（メタ）アクリレートモノマーとの共重合から誘導される共重合体である。 According to another embodiment of the invention, the film-forming polymer may be an ethylenic acrylate copolymer b) obtained from the following polymerization:
- at least one monomer of formula (I) as defined above, preferably a C ₁ -C ₄ alkyl acrylate, such as methyl acrylate and ethyl acrylate; and - a monomer of formula (II) as provided below.

In formula (II), R is as defined above, in particular the monomer of formula (II) is acrylic acid. The amount of acrylic acid ranges from 0.1% to 15% by weight, relative to the weight of the monomers of particle i), and the polymer of particle i) preferably contains acrylic acid and in particular methyl (meth)acrylate and ethyl A copolymer derived from copolymerization with one or more C ₁ -C ₄ alkyl (meth)acrylate monomers selected from (meth)acrylates.

According to another preferred embodiment of the invention, the polymer constituting the particles i) is an ethylenic acrylate copolymer b) derived from the following polymerization:
- at least two different monomers of the formula (I) as defined above, preferably of C ₁ -C ₁₈ alkyl acrylates such as methyl acrylate, ethyl acrylate and stearyl acrylate; and - optionally of the formula (I) as defined above; II) Monomer.

According to a particular embodiment of the invention, the polymer of particle i) is a polymer derived from C ₁ -C ₁₈ alkyl (meth)acrylate monomers. The monomers are preferably methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate and tert-butyl (meth)acrylate, stearyl ( meth)acrylate, more preferably methyl (meth)acrylate and stearyl (meth)acrylate.

Preferably, C ₁ -C ₄ alkyl acrylate monomers are used. Preferably the monomer is selected from methyl acrylate and ethyl acrylate. C ₁ -C ₁₈ alkyl methacrylate monomers are also particularly used. Preferentially, the monomers are selected from methyl methacrylate, ethyl methacrylate and stearyl methacrylate, more particularly stearyl methacrylate.

In yet another example, the film-forming polymer comprises 2% to 40% (by weight), in particular 4% to 25%, in particular 5% to 20% (by weight) of the above, based on the total weight of the film-forming polymer. (C ₉ -C ₂₂ )alkyl (C ₁ -C ₆ )(alkyl)acrylate monomers included in group d) or e).

（式（４ａ）及び（４ｂ）において、Ｒ_ａ、Ｒ_ｂ及びＲ_ｃは、同一であっても異なっていてもよく、水素原子又は（Ｃ_１－Ｃ_４）アルキル基を表し；好ましくは、Ｒ_ａ、Ｒ_ｂ及びＲ_ｃは水素原子を表す）。優先的には、本発明のエチレン性不飽和無水物モノマーは式（４ｂ）のものであり、より優先的には、無水マレイン酸；及び
（５）Ｈ_２Ｃ＝Ｃ（Ｒ）－Ｃ（Ｏ）－Ｏ－Ｈである（Ｒは水素原子又はメチルなどの（Ｃ_１－Ｃ_４）アルキル基を表す）。 According to another example, particles i) contain b1) (C ₁ -C ₄ )alkyl (C ₁ -C ₁₈ )(alkyl)acrylate and b2) one or more carboxyl groups, anhydride groups, phosphoric acid b) ethylenic copolymers with ethylenic monomers containing groups, sulfonic acid groups and/or aryl groups, such as benzyl. The ethylenic monomer has one or more carboxyl groups, anhydride groups, phosphoric acid groups, and sulfonic acid groups selected from (1), (2), (3), (4), and (5) described below. May contain groups and/or aryl groups:
(1) R ¹ (R ² )C=C(R ³ )-acid (wherein R ¹ , R ² and R ³ represent a hydrogen atom or a CO ₂ H, H ₂ PO ₄ or SO ₃ H group) , acid represents carboxyl, phosphoric acid or sulfonic acid, preferably carboxyl; R ¹ , R ² and R ³ cannot simultaneously represent a hydrogen atom);
(2) H ₂ C=C(R)-C(O)-N(R')-Alk-acid (R and R' may be the same or different, hydrogen atom or (C ₁ -C ₄ ) represents an alkyl group; Alk represents a (C ₁ -C ₆ ) alkylene group optionally substituted with at least one group selected from acid and hydroxyl as defined above; (as defined in , preferably carboxyl or sulfonic acid);
(3) Ar-(R ^a )C=C(R ^b )-R ^c (wherein R ^a , R ^b and R ^c may be the same or different, and a hydrogen atom or (C ₁ - C ₄ ) represents an alkyl group, Ar represents an aryl group, preferably benzyl, optionally substituted with at least one acid group CO ₂ H, H ₂ PO ₄ or SO ₃ H, preferably CO ₂ H or substituted with an SO ₃ H group),
(4) Maleic anhydride of formulas (4a) and (4b):

(In formulas (4a) and (4b), R _a , R _b and R _c may be the same or different and represent a hydrogen atom or a (C ₁ -C ₄ ) alkyl group; preferably, R _a , R _b and R _c represent hydrogen atoms). Preferentially, the ethylenically unsaturated anhydride monomers of the present invention are of formula (4b), more preferentially maleic anhydride; and (5) H ₂ C=C(R)-C( O)-O-H (R represents a hydrogen atom or a (C ₁ -C ₄ ) alkyl group such as methyl).

Preferably b2) is (C ₁ -C ₄ )(alkyl)acrylic acid, for example b) is a copolymer of (C ₁ -C ₄ )alkyl (meth)acrylate and (meth)acrylic acid. It can be a combination. In one example, b2) is selected from crotonic acid, maleic acid, itaconic acid, fumaric acid, styrene sulfonic acid, vinylbenzoic acid, vinyl phosphoric acid, acrylic acid, methacrylic acid, acrylamide propane sulfonic acid, acrylamide glycolic acid and salts thereof. be done. Preferably b2) represents acrylic acid.

The film-forming polymer or particles thereof are ethylenic homopolymers of (C ₉ -C ₂₂ )alkyl(C ₁ -C ₆ )(alkyl)acrylates, especially (C ₉ -C ₁₈ )alkyl(C ₁ -C ₄ )( ethylenic homopolymers of (C ₉ -C ₂₂ ) alkyl (meth)acrylates, more preferentially ethylenic homopolymers of (C ₉ -C ₁₈ ) alkyl (meth)acrylates; It may also be in a dispersion containing stabilizers such as polymers. The (C ₉ -C ₂₂ )alkyl group or (C ₉ -C ₁₈ )alkyl group may be linear or branched. In at least one case, the stabilizer(s) ii) are d) of the formula H ₂ C=C(R)-C(O)-O-R'', where R is a hydrogen atom or such as methyl. (C ₁ -C ₄ )alkyl group, R'' represents (C ₉ -C ₂₂ )alkyl group, preferably (C ₉ -C ₁₈ )alkyl group) Ethylene homopolymer obtained from the polymerization of monomers consisting of an ethylenic polymer selected from R'' may represent isodecyl, lauryl, stearyl, hexadecyl or behenyl. Alternatively, R'' may represent a straight-chain (C ₉ -C ₂₂ ) alkyl group, preferably a straight-chain (C ₉ -C ₁₈ ) alkyl group. According to another particular embodiment of the invention, the stabilizer(s) ii) are e) (C ₉ -C ₂₂ )alkyl (C ₁ -C ₆ )(alkyl)acrylates and (C ₁ -C ₄ ) Ethylenic copolymers of alkyl (C ₁ -C ₄ )(alkyl)acrylates, especially (C ₉ -C ₁₈ )alkyl (C ₁ -C ₄ )(alkyl)acrylates and (C ₁ -C ₄ )alkyl Copolymers of (C ₁ -C ₄ )(alkyl)acrylates, preferably selected from copolymers of (C ₉ -C ₁₈ )alkyl (meth)acrylates and (C ₁ -C ₄ )alkyl (meth)acrylates. Ru.

式（ＩＩＩ）及び（ＩＶ）において：
－Ｒは、同一であっても異なっていてもよく、水素原子又はメチルなどの（Ｃ_１－Ｃ_４）アルキル基を表し、
－Ｒ’は、同一であっても異なっていてもよく、メチル又はエチルなどの（Ｃ_１－Ｃ_４）アルキル基を表し、
－Ｒ’’は、（Ｃ_９－Ｃ_２２）アルキル、好ましくは_（Ｃ_１０－Ｃ_２０）アルキル、特に（Ｃ_２ｎ）アルキル基を表し、ｎは５、６、７、８、９又は１０に等しい整数である。好ましくは、Ｒ’’は、イソデシル、ラウリル、ステアリル、ヘキサデシル又はベヘニルを表す。 Stabilizer(s) ii) may be selected from ethylenic copolymers e) of formula (III) and (IV):

In formulas (III) and (IV):
-R may be the same or different and represents a hydrogen atom or a (C ₁ -C ₄ ) alkyl group such as methyl,
-R' may be the same or different and represents a (C ₁ -C ₄ ) alkyl group such as methyl or ethyl;
-R'' represents a (C ₉ -C ₂₂ )alkyl, preferably ₍ C ₁₀ -C ₂₀ )alkyl, especially (C _2n )alkyl group, where n is 5, 6, 7, 8, 9 or 10; are equal integers. Preferably R'' represents isodecyl, lauryl, stearyl, hexadecyl or behenyl.

Preferentially, the stabilizer(s) ii) are monomers selected from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylates and C ₁ -C ₄ alkyl (meth)acrylates, preferably methyl (meth)acrylates. ) copolymers derived from acrylates. More preferentially, the stabilizer(s) ii) are monomers selected from isodecyl, lauryl, stearyl and hexadecyl (meth)acrylates and C ₁ -C ₄ alkyl (meth)acrylates, preferably methyl (meth)acrylates. selected from copolymers derived from acrylate or ethyl (meth)acrylate. In particular, the stabilizer ii) is a homopolymer of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate, and preferably more than 4.5 lauryl, stearyl, hexadecyl or behenyl (meth)acrylate/C ₁ -C ₄ The alkyl (meth)acrylates may be selected from statistical copolymers of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylates and C ₁ -C ₄ alkyl (meth)acrylates present in weight ratios. Said weight ratio may range from 5 to 15, preferably from 5.5 to 12.

According to another example, the stabilizer(s) ii) is an ethylenic copolymer derived from the polymerization of a monomer of formula (IV) as defined above with two different monomers of formula (III) as defined above. selected from e). In one example, stabilizer(s) ii) comprises one monomer selected from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylate and two different C ₁ -C ₄ alkyl (meth)acrylates, preferably is selected from copolymers derived from polymerization with methyl acrylate and ethyl acrylate. In particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate/C ₁ -C ₄ alkyl (meth)acrylate is greater than 4. Advantageously, said weight ratio is in the range from 5 to 15, more preferentially said weight ratio is in the range from 5.5 to 11. In at least one other example, the stabilizer(s) ii) is a combination of a monomer of formula (III) as defined in the preceding claims and two different monomers of formula (IV) as defined above. selected from ethylenic copolymers e) derived from polymerization. For example, stabilizer(s) ii) can be composed of two different monomers selected from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylate and one C ₁ -C ₄ alkyl (meth)acrylate monomer, preferably may be selected from copolymers derived from the polymerization of methyl acrylate and ethyl acrylate. In particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate/C ₁ -C ₄ alkyl (meth)acrylate is greater than 4. The weight ratio may range from 4.5 to 10 or from 5 to 8.

In one case, the stabilizer(s) ii) are two different monomers selected from isodecyl, lauryl, stearyl, hexadecyl and behenyl (meth)acrylate and one C ₁ -C ₄ alkyl (meth)acrylate. It is selected from copolymers derived from the polymerization of monomers, preferably methyl acrylate and ethyl acrylate. In particular, the weight ratio of isodecyl, lauryl, stearyl, hexadecyl or behenyl (meth)acrylate/C ₁ -C ₄ alkyl (meth)acrylate in dispersion (A) is less than 1. In particular, said weight ratio may range from 0.05 to 0.5 in dispersion (A), and more preferentially said weight ratio may range from 0.08 to 0.2. According to a particular example, the stabilizer(s) ii) represent 2% to 40% (by weight), in particular 3%, relative to the weight of the polymer(s) present in the dispersion (A). It may be present in a content ranging from 4% to 25% (by weight), preferably from 4% to 25% (by weight). Preferably, the stabilizer(s) ii) and the particle(s) i) have a number average molecular weight (Mn) of 1000 to 1000000 g/mol, especially 5000 to 500000 g/mol, even more preferably 10000 to 300000 g/mol. has.

Additionally or alternatively, the film-forming polymer(s) include acrylic acid/isobutyl acrylate/isobornyl acrylate copolymer, trimethylsiloxysilicate, acrylate/isobornyl acrylate copolymer, norbornene/tris(trimethylsiloxy) ) _{silylnorbornene} copolymer, acrylate/polytrimethylsiloxymethacrylate copolymer, acrylate/polymethylsiloxymethacrylate copolymer, _C30-45 alkyldimethylsilylpolypropylsilsesquioxane, trimethylsilsesquixane (tr imethylsilsesquixane) , polypropylsilsesquixane, acrylate/dimethicone copolymer, octylacrylamide/acrylate/butylaminoethyl methacrylate copolymer, VA/butyl maleate/isobornyl acrylate copolymer, acrylate/t-butylacrylamide copolymer Polymers may be selected from polyvinylpyrrolidone/vinyl acetate copolymers, triacontanyl PVP copolymers, acrylate/dimethylaminoethyl methacrylate copolymers, and mixtures thereof. Optionally, the at least one film-forming polymer is acrylic acid/isobutyl acrylate/isobornyl acrylate copolymer, trimethylsiloxysilicate, acrylate/isobornyl acrylate copolymer, norbornene/tris(trimethylsiloxy)silylnorbornene copolymer. polymers, acrylate/polymethylsiloxymethacrylate copolymers, and mixtures thereof.

The film-forming polymer may be a hydrophobic film-forming polymer. The term "hydrophobic film-forming polymer" refers to a film-forming polymer that has no or limited affinity for water and is, in this respect, unsuitable for formulation in the form of a solute in an aqueous medium. In particular, the term "hydrophobic polymer" refers to a polymer that has a solubility in water at 25°C of less than 1% by weight.

The film-forming polymer may be selected from the following and may optionally be hydrophobic:
- Film-forming polymers that are soluble in organic solvent media, especially lipophilic polymers (in which the polymer is soluble or miscible in the organic medium and forms a single homogeneous phase when incorporated into the medium) - a film-forming polymer dispersible in an organic solvent medium (meaning that the polymer forms an insoluble phase in the organic medium and that the polymer remains stable and/or compatible once incorporated into this medium); means). In particular, such polymers may be in the form of non-aqueous dispersions of polymer particles, preferably in silicone or hydrocarbon oils. In one embodiment, the non-aqueous polymer dispersion comprises polymer particles stabilized on the surface with at least one stabilizer. These non-aqueous dispersions are often referred to as NAD.

Hydrophobic film-forming polymers include homopolymers and copolymers of compounds having ethylenic units, acrylic polymers and copolymers, polyurethanes, polyesters, silicone polymers, non-silicone organics grafted with monomers including polysiloxanes, etc. Mention may be made of polymers with backbones and polyisoprene.

In some examples, useful hydrophobic film-forming polymers include lipodispersible film-forming polymers in the form of non-aqueous dispersions of polymer particles, block ethylenic copolymers, vinyl polymers containing at least one carbosiloxane dendrimer unit, etc. polymers, silicone acrylate copolymers and mixtures thereof, preferably lipodispersible film-forming polymers in the form of non-aqueous dispersions of polymer particles (NAD).

Lipodispersible film-forming polymers in the form of non-aqueous dispersions of polymer particles, also known as NAD.Non-aqueous dispersions of hydrophobic film-forming polymers that can be used include, for example, surface stabilized dispersions of hydrophobic film-forming polymers dispersed in a liquid fatty phase. Mention may be made of dispersions of particles of grafted ethylenic polymers, preferably acrylic polymers, in a liquid oily phase in the form of particles. Dispersions of surface-stabilized polymer particles can be prepared as described in WO 04/055081, which is incorporated herein by reference in its entirety.

Block ethylenic copolymers The film-forming polymer is at least a first block having a glass transition temperature (T _g ) of 40°C or higher, and the homopolymer prepared from the monomer has a glass transition temperature of 40°C or higher. a first block wholly or partially derived from one or more first monomers such as a second block derived in whole or in part from one or more second monomers such that the homopolymer has a glass transition temperature of 20°C or less, The first block and the second block may include at least one of the first constituent monomers of the first block and at least one of the second constituent monomers of the second block. The block copolymers have a polydispersity index I greater than 2. Polymers of this type suitable for use in the present invention are described in EP 1 411 069, which is incorporated herein by reference in its entirety. A non-limiting example includes the product MEXOMER PAS (acrylic acid/isobutyl acrylate/isobornyl acrylate copolymer diluted to 50% with isododecane) sold by Noveal.

Vinyl Polymer Containing at least One Carbosiloxane Dendrimer-based Unit The hydrophobic film-forming polymer can be at least one vinyl polymer comprising at least one carbosiloxane dendrimer-based unit. Vinyl polymers typically have a backbone and at least one side chain that includes carbosiloxane dendrimer units having a carbosiloxane dendrimer structure. Vinyl polymers comprising at least one carbosiloxane dendrimer unit as described in WO 03/045337 and EP 963751, herein incorporated by reference in their entirety.

The term "carbosiloxane dendrimer structure" refers to a molecular structure with branched groups of high molecular weight, said structure having a high degree of regularity in the radial direction starting from the bond to the backbone. Such carbosiloxane dendrimer structures are described in the form of highly branched siloxane-silyl alkylene copolymers in JP-A-9-171-154, which is incorporated herein by reference in its entirety.

式中、Ｙはラジカル重合性有機基を表し、Ｒ^１はアリール基又は１～１０個の炭素原子を含むアルキル基を表し、Ｘ^ｉは、ｉ＝１のときに以下の式で表されるシリルアルキル基を表す：

式中、Ｒ^１は上記定義の通りであり、Ｒ^２は２～１０個の炭素原子を含むアルキレン基を表し、Ｒ^３は１～１０個の炭素原子を含むアルキル基を表し、Ｘ^ｉ＋１は水素原子、１～１０個の炭素原子を含むアルキル基、アリール基、又はｉ＝ｉ＋１で上記定義のシリルアルキル基を表し；ｉは前記シリルアルキル基の生成を表す１～１０の整数であり、ａ’は０～３の整数である；
成分（Ａ）に含まれる前記ラジカル重合性有機基は、以下から選択される：
メタクリル基又はアクリル基を含有し、以下の式で表される有機基：

式中、Ｒ^４は水素原子又はアルキル基を表し、Ｒ^５は１～１０個の炭素原子を有するアルキレン基を表す；及び、スチリル基を含有し、以下の式で表される有機基：

式中、Ｒ^６は水素原子又はアルキル基を表し、Ｒ^７は１～１０個の炭素原子を含むアルキル基を表し、Ｒ^８は１～１０個の炭素原子を含むアルキレン基を表し、ｂは０～４の整数であり、ｃは０又は１であり、ｃが０である場合、－（Ｒ^８）_ｃ－は結合を表す。 Vinyl polymers with at least one carbosiloxane dendrimer-based unit have molecular side chains containing carbosiloxane dendrimer structures and can be derived from the following polymerizations:
(A) 0 to 99.9 parts by weight of a vinyl monomer; and (B) 100 to 0.1 parts by weight of a carbosiloxane dendrimer containing a radically polymerizable organic group represented by the following general formula:

In the formula, Y represents a radically polymerizable organic group, R ¹ represents an aryl group or an alkyl group containing 1 to 10 carbon atoms, and X ⁱ is represented by the following formula when i=1 Represents a silylalkyl group:

In the formula, R ¹ is as defined above, R ² represents an alkylene group containing 2 to 10 carbon atoms, R ³ represents an alkyl group containing 1 to 10 carbon atoms, and X ⁱ⁺¹ is represents a hydrogen atom, an alkyl group containing 1 to 10 carbon atoms, an aryl group, or a silylalkyl group as defined above with i=i+1; i is an integer from 1 to 10 representing the formation of the silylalkyl group; a' is an integer from 0 to 3;
The radically polymerizable organic group contained in component (A) is selected from the following:
An organic group containing a methacrylic group or an acrylic group and represented by the following formula:

In the formula, R ⁴ represents a hydrogen atom or an alkyl group, R ⁵ represents an alkylene group having 1 to 10 carbon atoms; and an organic group containing a styryl group and represented by the following formula:

In the formula, R ⁶ represents a hydrogen atom or an alkyl group, R ⁷ represents an alkyl group containing 1 to 10 carbon atoms, R ⁸ represents an alkylene group containing 1 to 10 carbon atoms, and b is is an integer from 0 to 4, c is 0 or 1, and when c is 0, -(R ⁸ ) _c - represents a bond.

The vinyl type monomer which is the component (A) in the vinyl polymer is a vinyl type monomer containing a radically polymerizable vinyl group.

The following are examples of this monomer in vinyl type: methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate or similar lower alkyl methacrylates; glycidyl methacrylate; butyl methacrylate, butyl acrylate, n-butyl methacrylate, isobutyl methacrylate. , tert-butyl acrylate, tert-butyl methacrylate, n-hexyl methacrylate, cyclohexyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, octyl methacrylate, lauryl methacrylate, stearyl acrylate, stearyl methacrylate or higher analog methacrylate; vinyl acetate, propionic acid Vinyl or similar vinyl esters of lower fatty acids; vinyl caproate, vinyl 2-ethylhexanoate, vinyl laurate, vinyl stearate or similar esters of higher fatty acids; styrene, vinyltoluene, benzyl methacrylate, phenoxyethyl methacrylate, vinyl pyrrolidone or similar vinyl aromatic monomers; methacrylamide, N-methylolmethacrylamide, N-methoxymethyl-methacrylamide, isobutoxymethoxymethacrylamide, N,N-dimethylmethacrylamide, or similar vinyl-type monomers containing an amide group. Monomers; hydroxyethyl methacrylate, hydroxypropyl alcohol methacrylate, or similar monomers of vinyl type containing hydroxyl groups; acrylic acid, methacrylic acid, itaconic acid, crotonic acid, fumaric acid, maleic acid, or vinyl containing carboxylic acid groups Similar monomers of the type; tetrahydrofurfuryl methacrylate, butoxyethyl methacrylate, ethoxydiethylene glycol methacrylate, polyethylene glycol methacrylate, polypropylene glycol monomethacrylate, hydroxybutyl vinyl ether, cetyl vinyl ether, 2-ethylhexyl vinyl ether, or similar monomers of the vinyl type with ether linkages. Monomer; methacryloxypropyltrimethoxysilane, polydimethylsiloxane having a methacrylic group at one end of the molecule, polydimethylsiloxane having a styryl group at one end of the molecule, or similar silicone compounds having an unsaturated group; butadiene; vinyl chloride ; vinylidene chloride; methacrylonitrile; dibutyl fumarate; maleic anhydride; succinic anhydride; methacryl glycidyl ether; organic salts of amines, ammonium salts and alkali metals of methacrylic acid, itaconic acid, crotonic acid, maleic acid or fumaric acid Salt; A radically polymerizable unsaturated monomer containing a sulfonic acid group such as a styrene sulfonic acid group; A quaternary ammonium salt derived from methacrylic acid, such as 2-hydroxy-3-methacryloxypropyltrimethylammonium chloride; methacrylic esters of containing alcohols, such as methacrylic esters of diethylamine.

Polyfunctional monomers of the vinyl type may optionally be included in certain cases. The following are examples of such compounds: trimethylolpropane trimethacrylate, pentaerythrityl trimethacrylate, ethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, 1 , 6-hexanediol dimethacrylate, neopentyl glycol dimethacrylate, trimethylolpropane trioxyethyl methacrylate, tris (2-hydroxyethyl) isocyanurate dimethacrylate, tris (2-hydroxyethyl) isocyanurate trimethacrylate, at the two ends Polydimethylsiloxane capped with styryl groups having divinylbenzene groups, or similar silicone compounds having unsaturated groups.

To facilitate the preparation of starting material mixtures for cosmetics, the number average molecular weight of the vinyl polymer with carbosiloxane dendrimers ranges from 3,000 g/mol to 2,000,000 g/mol, preferably from 5,000 g/mol. It can be selected within the range of 800,000 g/mol. It may be a liquid, gum, paste, solid, powder, or any other form. A preferred form is a solution consisting of a dilution of a dispersion or powder in a solvent such as a silicone oil or an organic oil.

According to one embodiment, the grafted vinyl polymer in the sense of the present disclosure is preferably carried out in a preferably volatile oil or mixture of oils selected from silicone oils and hydrocarbon oils and mixtures thereof. May be carried. A non-limiting silicone oil that may optionally be used is cyclopentasiloxane. Similarly, a non-limiting hydrocarbon oil that can be used is isododecane.

Vinyl polymers grafted with at least one carbosiloxane dendrimer-based unit include TIB 4-100, TIB 4-101, TIB 4-120, TIB 4-130, TIB 4-200, FA 4002 ID from Dow Corning. (TIB 4-202), TIB 4-220 and FA 4001 CM (TIB 4-230).

In some cases, the vinyl polymer grafted with at least one carbosiloxane dendrimer-based unit is an acrylate/polytrimethylsiloxymethacrylate copolymer, such as sold in isododecane under the name Dow Corning FA 4002 ID Silicone Acrylate. It is a product.

Silicone Acrylate Copolymers In some examples, one or more of the film-forming polymers include at least one copolymer that includes carboxylate groups and polydimethylsiloxane groups. The term "copolymer comprising carboxylate groups and polydimethylsiloxane groups" refers to a copolymer derived from (a) one or more carboxyl (acid or ester) monomers and (b) one or more polydimethylsiloxane (PDMS) chains. copolymer. The term "carboxylic acid monomer" refers to both carboxylic acid monomers and carboxylic ester monomers.

Monomer (a) may be selected, for example, from acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, esters thereof and combinations of these monomers. Esters that may be mentioned include the following monomers: acrylates, methacrylates, maleates, fumarates, itaconates and/or crotonates. According to at least one embodiment of the invention, the monomers in ester form are more particularly linear or branched, preferably C ₁ -C ₂₄ , more preferably C ₁ -C ₂₂ alkyl acrylates and methacrylates. The alkyl radical is preferably selected from methyl, ethyl, stearyl, butyl and 2-ethylhexyl radicals, and mixtures thereof. Thus, in some examples, the copolymer has at least one selected from acrylic acid and methacrylic acid, and methyl, ethyl, stearyl, butyl or 2-ethylhexyl acrylate or methacrylate, and mixtures thereof, as the carboxylate group. Contains one group.

The term "polydimethylsiloxane" (also known as organopolysiloxane, abbreviated as PDMS) is obtained by polymerization and/or polycondensation of suitably functionalized silanes, in which silicon atoms are bonded via oxygen atoms. linear structures of variable molecular weight, consisting essentially of repeating main units linked to each other (siloxane bonds ≡Si-O-Si≡) and containing a trimethyl radical directly linked to said silicon atom via a carbon atom. Indicates any organosilicon polymer or oligomer. The PDMS chains that may be used to obtain the copolymer may contain at least one polymerizable radical group, preferably located at at least one of the ends of the chain, i.e. It may include one polymerizable radical group on one end of the polymerizable radical group or chain and one trimethylsilyl end group on the other end of the chain. The polymerizable radical group may in particular be an acrylic or methacrylic group, in particular the group CH ₂ =CR ₁ -CO-O-R ₂ , in which R ₁ represents hydrogen or a methyl group and R ₂ -CH ₂ -, -(CH ₂ ) _n - (n=3, 5, 8 or 10), -CH ₂ -CH(CH ₃ )-CH ₂ -, -CH ₂ -CH ₂ -O-CH ₂ -CH ₂ - , -CH ₂ -CH ₂ -O-CH ₂ -CH ₂ -CH(CH ₃ )-CH ₂ -, -CH ₂ -CH. ₂ -O-CH ₂ -, or -CH ₂ -O-CH ₂ - (represents CH ₂ -CH ₂ -).

Copolymers are generally prepared according to conventional polymerization and grafting methods, such as by combining (A) PDMS containing at least one polymerizable radical group (e.g., at one or both ends of the chain) and (B). ) obtained by free radical polymerization with at least one carboxylic acid monomer. The resulting copolymer may have a molecular weight ranging from about 3,000 g/mol to 200,000 g/mol, preferably from about 5,000 g/mol to 100,000 g/mol. The copolymer is in its natural or dispersed form in a solvent such as a lower alcohol containing 2 to 8 carbon atoms, such as isopropyl alcohol, or an oil, such as a volatile silicone oil (such as cyclopentasiloxane). obtain.

Further copolymers that may be mentioned include copolymers of acrylic acid and stearyl acrylate containing polydimethylsiloxane grafts, copolymers of stearyl methacrylate containing polydimethylsiloxane grafts, copolymers of acrylic acid and polydimethylsiloxane Examples include copolymers with stearyl methacrylate containing grafts, copolymers of methyl methacrylate, butyl methacrylate, 2-ethylhexyl acrylate and stearyl methacrylate containing polydimethylsiloxane grafts. In particular, KP-561 (CTFA name: acrylate/dimethicone), KP-541 (CTFA name: acrylate/dimethicone and isopropyl alcohol) in which the copolymer is dispersed at 60% by weight in isopropyl alcohol; Mention may also be made of the copolymer sold by Shin-Etsu Chemical Co., Ltd. under the name KP-545 (CTFA name: acrylate/dimethicone and cyclopentasiloxane) dispersed at 30% in cyclopentasiloxane. Mention may also be made of the graft copolymer of polyacrylic acid and dimethylpolysiloxane dissolved in isododecane, sold under the name KP-550 by Shin-Etsu Corporation.

Adhesive Polymers The skin tightening composition may include one or more film-forming polymers that are adhesive polymers. In various embodiments, at least one adhesive polymer may be amorphous, crystalline, or semi-crystalline. In some examples, the tacky polymer can have a T _g greater than about 25°C, such as greater than about 50°C, greater than about 75°C, or greater than about 100°C, according to various embodiments. In further examples, the adhesive polymer can have a T _g of less than about 25°C, such as less than about 0°C, less than about -25°C, or less than about -50°C.

For ease of reference, non-limiting examples of tacky polymers with T _g greater than about 25°C include those described in WO 2015/091513, which is incorporated herein by reference. may include polymer particles of C ₁ -C ₄ alkyl (methacrylate) polymers stabilized in non-aqueous dispersions, referred to herein as "oil dispersions." By way of example, C ₁ -C ₄ alkyl (meth)acrylate monomers include methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate and It may be selected from tert-butyl (meth)acrylate. For example, the polymer may be a methyl acrylate polymer and/or an ethyl acrylate polymer.

The polymers are also particularly suitable for ethylenically unsaturated acid monomers containing at least one carboxylic acid, phosphoric acid or sulfonic acid functionality, such as crotonic acid, itaconic acid, fumaric acid, maleic acid, maleic anhydride, styrene sulfonic acid, vinyl It may also contain ethylenically unsaturated acid monomers or anhydrides thereof selected from benzoic acid, vinyl phosphoric acid, acrylic acid, methacrylic acid, acrylamide propane sulfonic acid or acrylamide glycolic acid, and salts thereof. For example, the ethylenically unsaturated acid monomer may be selected from (meth)acrylic acid, maleic acid and maleic anhydride.

Hydrophilic Film-Forming Polymers with a Tg of Less than About 80° C. Film-forming polymers that can be used in the cosmetic compositions disclosed herein include, for example, acrylate copolymers, styrene/acrylate copolymers, acrylamide/acrylate Included are copolymers, polyurethanes, hydrophilic acrylate copolymers, polyvinyl alcohol, silicone resins and block silicone copolymer particles, as well as other resins and derivatives thereof and mixtures thereof. The hydrophilic film-forming polymer is present in the aqueous phase of the composition. Hydrophilic film-forming polymers can have a Tg of less than about 80°C.

Non-limiting examples of hydrophilic film forming agents include crotonic acid/vinyl C8-12 isoalkyl ester/Va/bis-vinyl dimethicone crosspolymer, styrene/acrylate/ammonium methacrylate copolymer, polyurethane-35, polyvinyl alcohol , acrylate copolymers and mixtures thereof.

According to various exemplary embodiments, the acrylate copolymer comprises two or more selected from acrylic acid, methacrylic acid, and simple esters thereof, such as lower alkyl esters such as methyl, ethyl, and ethylhexyl esters. may be selected from copolymers containing monomers of

Merely by way of non-limiting example, acrylate copolymers include styrene acrylate/copolymers, ammonium acrylate copolymers, ethyl acrylate copolymers, acrylate/ethylhexyl acrylate copolymers, acrylate/octyl acrylate copolymers, alkyl It may be selected from (meth)acrylate copolymers, acrylate/C12-C22 alkyl methacrylate copolymers, ethyl acrylate/methacrylic acid copolymers, and t-butyl acrylate/ethyl acrylate/methacrylic acid copolymers.

The film-forming polymer may also be selected from polyacrylates, such as polyacrylate-21 and polyacrylate-15, and acrylate copolymers.

The film-forming polymer may also be selected from hydrophilic vinyl-based polymers such as polyvinyl alcohol, derivatives of polyvinyl alcohol or mixtures thereof.

In another embodiment, the at least one film-forming polymer can be selected from lipophilic polymers, such as poly C10-30 alkyl acrylate (available as Intelimer® IPA 13-1 from Air Products).

Latex Film-Forming Agents Film-forming polymers may also be selected from latex film-forming polymers such as polyacrylate latexes and copolymers thereof.

Suitable examples of latex polymers for use in the present invention are ethylhexyl acrylate/hema copolymer (and) acrylate/diethylaminoethyl methacrylate/ethylhexyl acrylate copolymer (Syntran® PC 5775), styrene/acrylate/ ammonium methacrylate copolymers (Syntran® 5760, Syntran® 5009, Syntran® PC 5620), polyacrylate-21 (and) acrylate/dimethylaminoethyl methacrylate copolymers (Syntran® ) PC5100, Syntran® PC5776, Eudragit E 100, Jurymer ET-410C), styrene/acrylate/ammonium methacrylate copolymer (Syntran® 5009 CG), olefin/acrylate grafted polymer (and) laureth sulfate Sodium (and C12-15 SEC-Palace 15 (Syntran® EX108), Acrylate Copolymer (Aculyn® 33A Polymer, Avalure® Ace 210/120/315 Acrylic Copolymer, Carbopol Aqua SF -1® Polymer, Daitosol® 500 AD, Coatex® Co 633, Eliclear® 380/700/4U, Eudragit® L 100, Joncryl® 85, Syntran® polymers are: Commercially available from supplier Interpolymer Corp.

In one embodiment, the latex polymer is an acrylate latex polymer, particularly a styrene/acrylate copolymer. Non-limiting examples of commercially available styrene/acrylate copolymers include those available from Kobo Products, Inc. DAITOSOL 5000 STY sold by BASF; JONCRYL® 77 sold by BASF; Neoresins, Inc. NEOCRYL BT-62 sold by Dow Chemical Company; RHOPLEXTM P-376 and UCARTM DL 432S sold by Dow Chemical Company; and YODOSOL GH41 and YODOSOL GH840 sold by AkzoNobel. Not limited.

In further exemplary embodiments, the acrylamide/acrylate copolymer is selected from acrylic acid/ethyl acrylate/t-butylacrylamide copolymer, acrylate/octylacrylamide copolymer, and octylacrylamide/acrylate/methacrylate copolymer. can be done. Exemplary commercially available acrylamide/acrylate copolymers include AMPHOMER® LV-71 and DERMACRYL® 79 sold by AkzoNobel, and ULTRAHOLD® STRONG sold by BASF. These include, but are not limited to:

In at least one exemplary embodiment, the latex film-forming agent may be selected from blends that include combinations of latex film-forming agents, including, for example, blends of any of the film-forming agents described above. By way of non-limiting example, latex film-forming blends useful in accordance with the present disclosure include (1) at least one random styrene acrylate copolymer or derivative thereof, and at least one acrylate copolymer or derivative thereof, or (2) It may include at least two random styrene acrylate copolymers or derivatives thereof.

According to at least certain exemplary embodiments of the present disclosure, the at least one hydrophilic film forming agent has a glass transition temperature (Tg) ranging from about -15°C to about 80°C, such as from about 0°C to about 80°C ). The Tg of the hydrophilic film forming agent can range, for example, from about -15°C to about 78°C, from about -10°C to about 80°C, from about -5°C to about 75°C, from about 0°C to about 75°C. .

In certain embodiments, the styrene acrylate film former is a styrene/acrylate/ammonium methacrylate copolymer (e.g., (styrene/acrylate/ammonium methacrylate copolymer (and) sodium laureth sulfate (and) caprylyl glycol), Interpolymer SYNTRAN® 5760) from BASF and styrene/acrylate copolymers (eg JONCRYL 77 from BASF) and mixtures thereof.

Thickener(s)
The skin tightening composition includes one or more thickening agents. According to at least one aspect of the present disclosure, the thickener(s) include polyamide-8, styrene ethylene/propylene copolymer, nylon-611/dimethicone copolymer, VP/eicosene copolymer, silicone elastomer, Emulsified silicone elastomer, fumed silica, hydrophobically modified silica, silica silylate, zeolite, natural clay, synthetic clay, kaolin, hectorite, organically modified hectorite, pentaerythrityl tetraisostearate (and) disteardimonium hectorite Light (and) contains propylene carbonate, activated clay, disteardimonium hectorite, stearalkonium hectorite, quaternium-18 bentonite, quaternium-18 hectorite, benzalkonium bentonite, clay and mixtures thereof. can be selected from.

The total amount of thickener in the skin tightening composition can vary, but typically ranges from about 1 to about 40 wt. based on the total weight of the skin tightening composition. %. Optionally, the total amount of thickening agent is from about 1 to about 35 wt., based on the total weight of the skin tightening composition. %, about 1 to about 30 wt. %, about 1 to about 25 wt. %, about 1 to about 20 wt. %, about 1 to about 15 wt. %, about 1 to about 10 wt. %, about 2 to about 40 wt. %, about 2 to about 35 wt. %, about 2 to about 30 wt. %, about 2 to about 25 wt. %, about 2 to about 20 wt. %, about 2 to about 15 wt. %, or about 2 to about 10 wt. %.

For example, the skin tightening composition may be about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, based on the total weight of the skin tightening composition. 16, 17, 18, 19, 20 to about 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39 , and 40wt. % (including all ranges and subranges) of thickeners.

Non-limiting examples of thickeners are provided below.

Mineral Thickeners Mineral thickeners are mineral-based compounds that thicken or modify the viscosity of skin tightening compositions. Non-limiting examples of mineral thickeners include silica silicate, fumed silica, zeolites, natural clays, synthetic clays, kaolin, hectorite, organically modified hectorite (e.g. INCI: pentaerythrityl tetraisostearate). (and) disteardimonium hectorite (and) propylene carbonate), activated clays (e.g., disteardimonium hectorite, stearalkonium hectorite, quaternium-18 bentonite, quaternium-18 hectorite, and benzalkonium bentonite), and mixtures thereof.

Optionally, the skin tightening composition may include one or more mineral thickeners selected from optionally modified silicas, optionally modified clays, and mixtures thereof. Mineral thickeners may be selected from optionally modified silicas, optionally modified clays, and mixtures thereof. In some examples, mineral thickeners include lipophilic (organophilic) clays, especially modified hectorite; hydrophobically treated fumed silica; hydrophobic silica aerogels, and mixtures thereof (e.g., disteardimonium hectorite). , silica silylate, or mixtures thereof).

Mineral thickeners include silica silicate, fumed silica, zeolites, natural clays, synthetic clays, kaolin, hectorite, organically modified hectorite (e.g. INCI: 30 pentaerythrityl tetraisostearate (and) distealdi monium hectorite (and) propylene carbonate), activated clays (e.g., disteardimonium hectorite, stearalkonium hectorite, quaternium-18 bentonite, quaternium-18 hectorite, and benzalkonium bentonite). .

Optional Modified Silica Optional modified silica includes fumed silica, optionally with a hydrophobic surface treatment, and the particle size can be less than 1 μm. Specifically, it is possible to chemically modify the surface of silica by a chemical reaction that reduces the number of silanol groups present on the surface of silica. Silanol groups can in particular be replaced by hydrophobic groups, resulting in hydrophobic silicas. The hydrophobic group is
- In particular, it can be a trimethylsiloxy group obtained by treating fumed silica in the presence of hexamethyldisilazane. Silica treated in this way is known as "silica silylate" according to the CTFA (6th edition, 1995). They are sold, for example, by Degussa under the designation Aerosil R812 and by Cabot under the designation Cab-O-Sil TS-53.
- dimethylsilyloxyl or polydimethylsiloxane groups, obtained in particular by treating fumed silica in the presence of polydimethylsiloxane or dimethyldichlorosilane. Silica treated in this way is known as "silica dimethyl silylate" according to CTFA (6th edition, 1995). They are sold, for example, by Degussa under the designations Aerosil R972 and Aerosil R974, and by Cabot under the designations Cab-O-Sil TS-610 and Cab-O-Sil TS-720.

The hydrophobic fumed silica may in particular have a particle size ranging from nanometers to micrometers, for example from about 5 to 200 nm.

The optionally modified silica may be, for example, silica airgel particles. Silica airgel is a porous material obtained by replacing (drying) the liquid component of silica gel with air. They are generally synthesized via a sol-gel process in a liquid medium and then dried, usually by extraction with supercritical fluids, the most commonly used being supercritical _CO2 . This type of drying makes it possible to avoid pores and shrinkage of the material. Sol-gel processes and various drying processes are described by Brinker CJ. , and Scherer G. W. , Sol-Gel Science: New York: Academic Press, 1990.

The hydrophobic silica airgel particles have a specific surface area per unit mass (S _M ) ranging from 500 to 1500 m ² /g, preferably from 600 to 1200 m ² /g, even better from 600 to 800 m ² /g, and from 1 to Volume average diameter in the range 1500 μm, even better 1 to 1000 μm, preferably 1 to 100 μm, especially 1 to 30 μm, more preferably 5 to 25 μm, even better 5 to 20 μm, even better still 5 to 15 μm (D[0.5]). In some examples, the hydrophobic silica airgel particles have a volume average diameter (D[0. 5]).

The hydrophobic silica airgel particles have a specific surface area per unit mass (S _M ) in the range 600-800 m ² /g and a volume average diameter (D [0.5]). The hydrophobic silica airgel particles have a specific surface area per unit volume S _V ranging from 5 to 60 m ² /cm ³ , preferably from 10 to 50 m ² /cm ³ , even better from 15 to 40 m ² /cm ³ obtain.

The term "hydrophobic silica" refers to a compound whose surface has been treated with a silylating agent, for example a halogenated silane such as an alkylchlorosilane, a siloxane, especially dimethylsiloxane, for example hexamethyldisiloxane, or a silazane, so that the silyl group Si--Rn , meaning any silica functionalized with OH groups, for example with trimethylsilyl groups. In some cases, it is particularly useful to use hydrophobic silica airgel particles surface-modified with trimethylsilyl groups. Mention may be made of the aerogels sold by the company Cabot under the designations Aerogel TLD 201, Aerogel OGD 201, Aerogel TLD 203, Enova Aerogel MT 1100 and Enova Aerogel MT 1200. Mention may be made of the airgel sold by Dow Corning under the designation DOWSIL VM-2270 Aerogel. Particularly useful aerogels include hydrophobic silica aerogels, preferably silyl silica (INCI name: silica silylate).

Optionally Modified Viscosity Clays are silicates containing cations that may be selected from calcium, magnesium, aluminum, sodium, potassium and lithium cations, and mixtures thereof. Examples of such materials include, but are not limited to, clays of the smectite group, and clays of the vermiculite, stevensite, and chlorite groups. These clays can be of natural or synthetic origin.

In particular, the products sold by Rockwood Additives Limited under the names Laponite XLS, Laponite XLG, Laponite RD, Laponite RDS and Laponite XL21 (these products are sodium magnesium silicate, in particular sodium lithium magnesium silicate), smectites such as saponite, hectorite, montmorillonite, bentonite or beidellite, especially synthetic hectorite (also known as laponite); bentonites such as the product sold under the name Bentone HC by Rheox; Veegum Ultra, Veegum HS or Especially hydrated magnesium aluminum silicate, such as the product sold by Vanderbilt Company under the name Veegum DGT, or calcium silicate, especially the synthetic type sold by Vanderbilt Company under the name Micro-Cel C. Mention may be made of calcium acids.

In some instances, organic clays are preferred, and more specifically modified clays such as montmorillonite, bentonite, hectorite, attapulgite and sepiolite, and mixtures thereof. The clay may be optionally modified bentonite or optionally modified hectorite. The clay may be modified with chemical compounds selected from quaternary amines, tertiary amines, amine acetates, imidazolines, amine soaps, fatty sulfates, alkylaryl sulfonates and amine oxides, and mixtures thereof.

Hectorite modified with quaternary amines, more specifically hectorite modified with C ₁₀ -C ₂₂ fatty acid ammonium halides, such as chloride, such as hectorite modified with distearyldimethylammonium chloride (CTFA name : disteardimonium hectorite), for example the products sold by the company Elementis under the names Bentone 38V, Bentone 38V CG or Bentone EW CE, or stearalkonium hectorites such as Bentone 27V. In some cases, the clay is preferably disteardimonium hectorite.

Quaternium-18 bentonites, such as those sold under the names Bentone 34 by Elementis, Tixogel VP by United Catalyst, and Claytone 40 by Southern Clay; stearalkonium bentonites, such as Tix by United Catalyst; Sold under the name ogel LG. and those sold by Southern Clay under the names Claytone AF and Claytone APA; or also quaternium-18/benzalkonium bentonite, such as sold under the name Claytone HT by Southern Clay. can be mentioned. In some examples, the clay is selected from organophilically modified clays, especially organophilically modified hectorites, especially those modified with distearyldimethylammonium chloride (CTFA name: disteardimonium hectorite). is preferred.

Non-mineral thickeners Non-mineral thickeners, when present, may be lipophilic or hydrophilic, i.e. suitable for thickening oily phases or anhydrous compositions, or for thickening aqueous phases. Or it may be suitable for thickening aqueous compositions. For anhydrous compositions, lipophilic thickeners or thickeners that thicken anhydrous (eg, oil-based) compositions are useful. Similarly, for aqueous compositions, hydrophilic thickeners are useful.

Non-limiting examples of non-mineral thickeners useful for thickening anhydrous compositions include C _12-22 alkyl acrylate/hydroxyethyl acrylate copolymer (INTELIMER), OLEOCRAFT LP sold by Croda. Ethylenediamine/stearyl dimer dilinoleate copolymers such as -10-PA-(MV), polyamide-8 such as OLEOCRAFT LP-20-PA-(MV) sold by Croda, sold by Air Products & Chemicals Poly C ₁₀ -C ₃₀ alkyl acrylates such as INTELIMER IPA 13-6 or INTELIMER IPA 13-1 NG Polymer, nylon-611/dimethicone copolymer such as Dow Corning 2-8179 Gellant sold by Dow Corning Combine, or Chiba Included are dextrin palmitates such as RHEOPEARL KL2-OR sold by Flour Milling.

Further non-limiting examples of non-mineral thickeners useful for thickening anhydrous compositions include thickening polymers such as block copolymers of styrene and isoprene, butadiene, ethylene/propylene or ethylene/butylene. (including those currently available under the tradename KRATON), particularly hydrogenated styrene/isoprene linear diblock copolymers. A related category of thickening polymers includes alpha methylstyrene and styrene polymers, such as those under the trade name KRISTALEX. Still other thickening polymers include alkyl-substituted galactomannans available under the tradename N-HANCE AG. Non-mineral thickeners useful in thickening anhydrous compositions also include thickening polymers such as vinylpyrrolidone containing polyethylene containing at least 25 methylene units, such as triacontanyl polyvinylpyrrolidone (trade name Antaron WP- 660).

Non-mineral thickeners useful for thickening anhydrous compositions may also include silicone elastomers. The silicone elastomer can be a non-emulsifying silicone elastomer, an emulsifying silicone elastomer, or a mixture thereof. Non-emulsifying silicone elastomers include, but are not limited to, organopolysiloxane elastomers that do not contain hydrophilic chains, such as polyoxyalkylene or polyglycerolated chains. On the other hand, emulsified silicone elastomers include, but are not limited to, polyoxyalkylenated silicone elastomers and polyglycerolated silicone elastomers.

i. Non-emulsifying silicone elastomers The term "non-emulsifying" silicone elastomers defines organopolysiloxane elastomers that do not contain hydrophilic chains, such as polyoxyalkylene or polyglycerolized chains.

Non-emulsifying silicone elastomers include the crosslinking addition of diorganopolysiloxanes containing at least one silicon-bonded hydrogen and diorganopolysiloxanes containing silicon-bonded ethylenically unsaturated groups, especially in the presence of a platinum catalyst. by reaction; or by a dehydrogenative crosslinking condensation reaction between a diorganopolysiloxane containing hydroxyl end groups and a diorganopolysiloxane containing at least one silicon-bonded hydrogen, especially in the presence of an organotin. or by crosslinking condensation reactions of diorganopolysiloxanes containing hydroxyl end groups with hydrolyzable organopolysilanes; or by thermal crosslinking of organopolysiloxanes, especially in the presence of organoperoxide catalysts; or by gamma radiation, ultraviolet radiation; Alternatively, elastomeric crosslinked organopolysiloxanes obtainable by crosslinking organopolysiloxanes via high energy radiation such as electron beams are included.

A non-limiting example of a non-emulsifying silicone elastomer is dimethicone crosspolymer. In some examples, the non-emulsifying silicone elastomer is a crosslinked silicone, e.g., dimethicone crosspolymer, (dimethicone/vinyl dimethicone) crosspolymer, (dimethicone/phenylvinyl dimethicone) crosspolymer, (vinyl dimethicone/lauryl dimethicone) crosspolymer, (lauryl polydimethylsiloxyethyl dimethicone/bis-vinyl dimethicone) crosspolymer, alkyl (C30-45) cetearyl dimethicone crosspolymer, cetearyl dimethicone crosspolymer, and mixtures thereof. In some cases, dimethicone crosspolymers are particularly preferred.

In some examples, elastomeric crosslinked organopolysiloxanes are prepared, particularly in the presence of a platinum catalyst (C2), as described, for example, in EP 295,886, which is incorporated herein by reference in its entirety. Crosslinking addition reaction of a diorganopolysiloxane (A2) containing at least two hydrogens each bonded to silicon and a diorganopolysiloxane (B2) containing at least two ethylenically unsaturated groups bonded to silicon obtained by.

In some examples, organopolysiloxanes can be obtained by the reaction of dimethylpolysiloxanes containing dimethylvinylsiloxy end groups and methylhydrogenpolysiloxanes containing trimethylsiloxy end groups in the presence of a platinum catalyst.

Compound (A2) is a basic reactant for forming the elastomeric organopolysiloxane, and crosslinking is carried out by an addition reaction between compound (A2) and compound (B2) in the presence of catalyst (C2). Compound (A2) can be a diorganopolysiloxane containing at least two lower (eg, C ₂ -C ₄ ) alkenyl groups. Lower alkenyl groups may be selected from vinyl, allyl and propenyl groups. These lower alkenyl groups may be located at any position on the organopolysiloxane molecule, but are preferably located at the ends of the organopolysiloxane molecule. The organopolysiloxane (A2) may have a branched, linear, cyclic or network structure, but a linear structure is preferred. Compound (A2) may have a viscosity ranging from liquid to rubbery. Preferably, compound (A2) has a viscosity of at least 100 centistokes at 25°C.

Organopolysiloxane (A2) is methylvinylsiloxane, methylvinylsiloxane-dimethyl-siloxane copolymer, dimethylpolysiloxane containing dimethylvinylsiloxy end groups, dimethyl-siloxane-methylphenyl containing dimethylvinyl-siloxy end groups. Copolymers of siloxane, copolymers of dimethylsiloxane-diphenylsiloxane-methylvinylsiloxane containing dimethylvinylsiloxy terminal groups, copolymers of dimethylsiloxane-methylvinylsiloxane containing trimethylsiloxy terminal groups, trimethylsiloxy terminals copolymers of dimethylsiloxane-methyl-phenylsiloxane-methylvinylsiloxane containing groups, methyl(3,3,3-trifluoropropyl)polysiloxane containing dimethylvinylsiloxy end groups, and dimethylvinylsiloxy end groups. A copolymer of dimethylsiloxane containing methyl-(3,3,3-trifluoropropyl)siloxane may be selected.

Compound (B2) is a crosslinking agent for compound (A2), especially since it is an organopolysiloxane containing at least two silicon-bonded hydrogens in each molecule.

In some cases, the sum of the number of ethylene groups per molecule of compound (A2) and the number of silicon-bonded hydrogen atoms per molecule of compound (B2) is at least 4.

Compound (B2) may have any molecular structure, especially a linear or branched structure, or a cyclic structure. Compound (B2) may have a viscosity in the range from 1 to 50,000 centistokes at 25° C., so as to have particularly good miscibility with compound (A). Compound (B2) has a molecular ratio of 1/1 to 20/1 between the total amount of silicon-bonded hydrogen atoms in compound (B2) and the total amount of all ethylenically unsaturated groups in compound (A2). Advantageously, it is added in amounts that fall within this range.

Compound (B2) is a methylhydrogenpolysiloxane containing a trimethylsiloxy terminal group, a dimethylsiloxane-methylhydrogensiloxane copolymer containing a trimethylsiloxy terminal group, and a dimethyl-siloxane-methylhydrogensiloxane cyclic copolymer. can be selected from coalescence.

Compound (C2) is a crosslinking reaction catalyst, in particular chloroplatinic acid on a support, chloroplatinic acid-olefin complex, chloroplatinic acid-alkenylsiloxane complex, chloroplatinic acid-diketone complex, platinum black or platinum.

Catalyst (C2) is preferably added in the form of clean platinum metal in an amount of 0.1 to 1000 parts by weight, more preferably 1 to 100 parts by weight, per 1000 parts by weight of the total amount of compounds (A2) and (B2).

Other organic groups, such as alkyl groups such as methyl, ethyl, propyl, butyl or octyl; substituted alkyl groups such as 2-phenylethyl, 2-phenylpropyl or 3,3,3-trifluoropropyl; phenyl, tolyl or An aryl group such as xylyl; a substituted aryl group such as phenylethyl; and a substituted monovalent hydrocarbon group such as an epoxy group, a carboxylate ester group, or a mercapto group are used in the organopolysiloxane (A2) and ( It may be bonded to silicon in B2).

The non-emulsifying silicone elastomer according to the invention can be mixed with at least one hydrocarbon oil and/or one silicone oil to form a gel. In these gels, the non-emulsifying elastomer is often in the form of non-spherical particles.

Non-emulsifying elastomers that can be used include those sold under the name DOWSIL EL-8048 by DOW (INCI: isododecane (and) dimethicone crosspolymer), KSG-6, KSG-15, KSG- by Shin-Etsu Chemical Co., Ltd. 16, KSG -18, KSG -41, KSG -42, KSG -43, KSG -44, USG -105, USG -106, DOW CORNING DC9040, DC9041, DC9509, DC9509, DC9505, DC5930, DC5930, DC5930, DC5930, DC5930 DC9350, DC9045 and DC9043, Gransil by Grant Industries, and SFE839 by General Electric.

The total amount of non-emulsifying silicone elastomer, if present, in the cosmetic composition can vary, but typically ranges from about 0.1 to about 20 wt., based on the total weight of the cosmetic composition. %. In some cases, the total amount of non-emulsifying silicone elastomer in the cosmetic composition is from about 0.1 to about 15 wt., based on the total weight of the cosmetic composition. %, about 0.1 to about 10 wt. %, about 0.1 to about 5 wt. %, about 1 to about 20 wt. %, about 1 to about 15 wt. %, about 1 to about 10 wt. %, or about 1 to about 5 wt. %.

ii. Emulsifying Silicone Elastomer The term "emulsifying silicone elastomer" is intended to mean a silicone elastomer containing at least one hydrophilic chain. For example, the emulsifying silicone elastomer may be selected from polyoxyalkylenated silicone elastomers, polyglycerolated silicone elastomers, and mixtures thereof.

a. Polyoxyalkylenated silicone elastomers: Polyoxyalkylenated silicone elastomers are produced by the crosslinking addition reaction of a diorganopolysiloxane containing at least one silicon-bonded hydrogen with a polyoxyalkylene having at least two ethylenically unsaturated groups. It may also be a crosslinked organopolysiloxane obtained by. In particular, polyoxyalkylenated crosslinked organopolysiloxanes may be used, e.g., as described in U.S. Pat. No. 5,236,986 and U.S. Pat. (A1) a diorganopolysiloxane containing at least two hydrogens each bonded to silicon, and (B1) containing at least two ethylenically unsaturated groups, especially in the presence of a platinum catalyst (C1). It can be obtained by crosslinking addition reaction of polyoxyalkylene.

Organopolysiloxanes are produced by reacting polyoxyalkylenes (especially polyoxyethylene and/or polyoxypropylene) containing dimethylvinylsiloxy end groups with methylhydrogenpolysiloxanes containing trimethylsiloxy end groups in the presence of a platinum catalyst. It can be obtained by

The organic group bonded to the silicon atom of compound (A1) is an alkyl group containing 1 to 18 carbon atoms, such as methyl, ethyl, propyl, butyl, octyl, decyl, dodecyl (or lauryl), myristyl, cetyl or Stearyl; substituted alkyl groups such as 2-phenyl-ethyl, 2-phenylpropyl or 3,3,3-trifluoropropyl; aryl groups such as phenyl, tolyl or xylyl; substituted aryl groups such as phenylethyl; epoxy groups, carboxy It can be a substituted monovalent hydrocarbon group such as a rate ester group or a mercapto group.

Compound (A1) is a methylhydrogenpolysiloxane containing a trimethylsiloxy terminal group, a dimethylsiloxane-methylhydrogensiloxane copolymer containing a trimethylsiloxy terminal group, a cyclic dimethylsiloxane-methylhydrogensiloxane copolymer, and copolymers of dimethylsiloxane-methylhydrogensiloxane-laurylmethylsiloxane containing trimethylsiloxy end groups.

Compound (C1) is a crosslinking reaction catalyst, in particular chloroplatinic acid on a support, chloroplatinic acid-olefin complex, chloroplatinic acid-alkenylsiloxane complex, chloroplatinic acid-diketone complex, platinum black and platinum.

In some cases, polyoxyalkylenated silicone elastomers may be formed from divinyl compounds, especially polyoxyalkylenes having at least two vinyl groups, which react with the Si--H bonds of the polysiloxane.

Polyoxyalkylenated silicone elastomers are often mixed with at least one hydrocarbon oil and/or one silicone oil to form a gel. In these gels, the polyoxyalkylenated elastomer can be in the form of non-spherical particles. Polyoxyalkylenated elastomers are described in, among others, U.S. Pat. No. 5,236,986, U.S. Pat. No. 5,412,004, U.S. Pat. , which are incorporated herein by reference in their entirety. Additionally, useful polyoxyalkylenated silicone elastomers include, but are not limited to, KSG-21, KSG-20, KSG-30, KSG-31, KSG-32, KSG-33, KSG-210 by Shin-Etsu Chemical Co., Ltd. , KSG-310, KSG-320, KSG-330, KSG-340 and X-226146, and DC9010 and DC9011 by Dow Corning.

b. Polyglycerolated silicone elastomers: Polyglycerolated silicone elastomers are typically prepared by the crosslinking addition reaction of a diorganopolysiloxane containing at least one silicon-bonded hydrogen and a polyglycerolated compound having ethylenically unsaturated groups. A crosslinked elastomeric organopolysiloxane that can be obtained, often in the presence of a platinum catalyst. For example, in some cases, the crosslinked elastomeric organopolysiloxane comprises (A) a diorganopolysiloxane containing at least two hydrogens each bonded to silicon, and (B) glycerol having at least two ethylenically unsaturated groups. It is obtained by a crosslinking addition reaction of a chemical compound, particularly in the presence of (C) a platinum catalyst. In some examples, organopolysiloxanes can be obtained by the reaction of polyglycerolated compounds containing dimethylvinylsiloxy end groups and methylhydrogenpolysiloxanes containing trimethylsiloxy end groups in the presence of a platinum catalyst. .

Compound (A) is the basic reactant for forming the elastomeric organopolysiloxane, and crosslinking is carried out by an addition reaction between compound (A) and compound (B) in the presence of catalyst (C). Compound (A) may be, for example, an organopolysiloxane containing at least two hydrogen atoms bonded to different silicon atoms in each molecule. Compound (A) may have any molecular structure, especially a linear or branched structure, or a cyclic structure. Furthermore, compound (A) may have a viscosity ranging from 1 to 50,000 centistokes at 25° C., so as to have particularly good miscibility with compound (B).

The organic group bonded to the silicon atom of compound (A) is an alkyl group containing 1 to 18 carbon atoms, such as methyl, ethyl, propyl, butyl, octyl, decyl, dodecyl (or lauryl), myristyl, cetyl or Stearyl; substituted alkyl groups such as 2-phenylethyl, 2-phenylpropyl or 3,3,3-trifluoropropyl; aryl groups such as phenyl, tolyl or xylyl; substituted aryl groups such as phenylethyl; epoxy groups, carboxylates It can be a substituted monovalent hydrocarbon group such as an ester group or a mercapto group. In some examples, the organic group is preferably selected from methyl, phenyl, and lauryl.

Therefore, compound (A) is a methylhydrogenpolysiloxane containing a trimethylsiloxy terminal group, a dimethylsiloxane-methylhydrogensiloxane copolymer containing a trimethylsiloxy terminal group, a dimethylsiloxane-methylhydrogensiloxane cyclic copolymer, and copolymers of dimethylsiloxane-methyl-hydrogensiloxane-laurylmethylsiloxane containing trimethylsiloxy end groups.

Compound (B) may be a polyglycerolated compound corresponding to formula (B') below:
C _m H. _2m-1 -O-[Gly] _n -C _m H _2m-1 (B')
In the formula, m is an integer in the range of 2 to 6, and n is in the range of 2 to 200, preferably in the range of 2 to 100, preferably in the range of 2 to 50, preferably in the range of 2 to 20, preferably 2. an integer in the range ~10, preferentially in the range 2-5, especially equal to 3; Gly represents:
-CH ₂ -CH(OH)-CH ₂ -O- or -CH ₂ -CH(CH ₂ OH)-O-

In many cases, the sum of the number of ethylene groups per molecule of compound (B) and the number of silicon-bonded hydrogen atoms per molecule of compound (A) is at least 4.

Compound (A) has a molecular ratio of 1/1 to 20/1 between the total amount of hydrogen atoms bonded to silicon atoms in compound (A) and the total amount of all ethylenically unsaturated groups in compound (B). It may be advantageous to add in an amount that is within the range of .

Compound (C) is a crosslinking reaction catalyst, in particular chloroplatinic acid on a support, chloroplatinic acid-olefin complex, chloroplatinic acid-alkenylsiloxane complex, chloroplatinic acid-diketone complex, platinum black or platinum. Catalyst (C) is preferably added in the form of clean platinum metal in an amount of 0.1 to 1000 parts by weight, more preferably 1 to 100 parts by weight, per 1000 parts by weight of the total amount of compounds (A) and (B).

Polyglycerolated silicone elastomers are often mixed with at least one hydrocarbon oil and/or one silicone oil to form a gel. In these gels, the polyglycerolized elastomer is often in the form of non-spherical particles. Such elastomers are described in particular in WO 2004/024798, which is incorporated herein by reference in its entirety. Polyglycerolated silicone elastomers include those sold by Shin-Etsu Chemical Co., Ltd. under the names KSG-710, KSG-810, KSG-820, KSG-830 and KSG-840.

The total amount of emulsified silicone elastomer, if present, in the cosmetic composition can vary, but typically ranges from about 0.1 to about 20 wt., based on the total weight of the cosmetic composition. %. In some cases, the total amount of emulsified silicone elastomer in the cosmetic composition is from about 0.1 to about 15 wt., based on the total weight of the cosmetic composition. %, about 0.1 to about 10 wt. %, about 0.1 to about 5 wt. %, about 1 to about 20 wt. %, about 1 to about 15 wt. %, about 1 to about 10 wt. %, or about 1 to about 5 wt. %.

Non-limiting examples of non-mineral thickeners that may optionally be included to thicken the aqueous composition include xanthan gum, guar gum, biosaccharide gum, cellulose, acacia Seneca gum, sclerotium gum, Examples include agarose, pectin, gellan gum, and hyaluronic acid. Additionally, one or more non-mineral thickeners may include, for example, ammonium polyacryloyl dimethyl taurate, ammonium acryloyl dimethyl taurate/VP copolymer, sodium polyacrylate, acrylate copolymer, polyacrylamide, carbomer, and acrylate/ It may also be a polymeric thickener such as a C10-30 alkyl acrylate crosspolymer.

Additional non-limiting examples of various types of non-mineral thickeners include:

Carboxylic Acid Polymers These polymers are crosslinked compounds containing one or more monomers derived from acrylic acid, substituted acrylic acids, and salts and esters of these acrylic acids and substituted acrylic acids, where two or more crosslinkers contains carbon-carbon double bonds and is derived from polyhydric alcohols.

Examples of commercially available carboxylic acid polymers useful herein include carbomer, a homopolymer of acrylic acid crosslinked with allyl ethers of sucrose or pentaerythritol. Carbomer is B. F. Goodrich to Carbopol. RTM. 900 series (eg Carbopol® 954). Additionally, other carboxylic acid polymer agents include Ultrez® 10 (B.F. Goodrich) and copolymers of C10-30 alkyl acrylates with one or more monomers of acrylic acid, methacrylic acid, or the like. (ie, C1-4 alcohol) esters, and the crosslinking agent is the allyl ether of sucrose or pentaerythritol. These copolymers are known as acrylate/C10-C30 alkyl acrylate crosspolymers and are described by B. F. Goodrich to Carbopol. RTM. 1342, Carbopol® 1382, Pemulen TR-1, and Pemulen TR-2. In other words, examples of carboxylic acid polymer thickeners useful herein are those selected from carbomers, acrylate/C10-C30 alkyl acrylate crosspolymers, and mixtures thereof.

Crosslinked Polyacrylate Polymers Compositions of the present disclosure may optionally contain crosslinked polyacrylate polymers useful as thickening or gelling agents, including both cationic and nonionic polymers. Examples of useful crosslinked nonionic polyacrylate polymers and crosslinked cationic polyacrylate polymers include U.S. Pat. No. 5,100,660; U.S. Pat. No. 4,849,484; No. 4,835,206, U.S. Patent No. 4,628,078, U.S. Patent No. 4,599,379, and European Patent No. 228,868. , all of which are incorporated herein by reference in their entirety.

Polyacrylamide Polymers The compositions of the present disclosure can optionally contain polyacrylamide polymers, particularly nonionic polyacrylamide polymers, including substituted branched or unbranched polymers. Among these polyacrylamide polymers are nonionic polymers with the CTFA designations polyacrylamide and isoparaffin and laureth-7, available under the trade name Sepigel 305 from Seppic Corporation.

Other polyacrylamide polymers useful herein include multi-block copolymers of acrylamide and substituted acrylamide with acrylic acid and substituted acrylic acid. Commercially available examples of these multiblock copolymers include Lipo Chemicals, Inc. Examples include Hypan SR150H, SS500V, SS500W, and SSSA100H from Japan.

The composition may also contain thickening and texturing gels of the type exemplified by the product range called Lubrajel® from United Guardian. These gels have moisturizing, thickening and stabilizing properties.

Polysaccharides A wide variety of polysaccharides may be useful herein. "Polysaccharide" refers to a gelling agent that includes a backbone of repeating sugar (ie, carbohydrate) units. Non-limiting examples of polysaccharide gelling agents include cellulose, carboxymethyl hydroxyethyl cellulose, cellulose acetate propionate carboxylate, hydroxyethyl cellulose, hydroxyethyl ethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, methyl hydroxy ethyl cellulose, microcrystalline sodium cellulose, sodium cellulose sulfate, and mixtures thereof. Also useful herein are alkyl-substituted celluloses. Preferred among the alkylhydroxyalkylcellulose ethers are materials given the CTFA designation cetylhydroxyethylcellulose, which are ethers of cetyl alcohol and hydroxyethylcellulose. This material is sold by Aqualon Corporation under the trade name Natrosol® CS Plus.

Other useful polysaccharides include scleroglucans, which contain a linear chain of (1-3) linked glucose units with (1-6) linked glucose units, commercially available examples of which are described by Michel Mercier Products Inc. Clearogel™, offered by CS11, Inc.

Gums Other thickening and gelling agents useful herein include materials derived primarily from natural sources. Non-limiting examples of these thickening and/or gelling agents include acacia, agar, algin, alginic acid, ammonium alginate, amylopectin, calcium alginate, calcium carrageenan, carnitine, carrageenan, dextrin, gelatin, gellan gum, guar gum. , guar hydroxypropyltrimonium chloride, hectorite, hyaluronic acid, hydrated silica, hydroxypropyl chitosan, hydroxypropyl guar, karaya gum, kelp, locust bean gum, nut gum, potassium alginate, carrageenan potassium, propylene glycol alginate, sclerotium gum , carboxymethyl dextran, sodium carrageenan, gum tragacanth, xanthan gum, and mixtures thereof.

Non-limiting examples of water-soluble natural polymers include gum arabic, gum tragacanth, gum karaya, guar gum, gellan gum, tara gum, locust bean gum, tamarind gum, sodium alginate, propylene glycol alginate ester, carrageenan, furcellulan, agar, high Methoxy pectin, low methoxy pectin, xanthine, chitosan, starch (e.g. starch from corn, potato, wheat, rice, sweet potato and tapioca, α-starch, soluble starch), fermented polysaccharides (e.g. xanthan gum, pullulan, calsilane, dextran), acidic heteropolysaccharides (e.g. bulk polysaccharides) derived from the callus of plants belonging to the species Polyantes, proteins (e.g. sodium caseinate, gelatin, albumin), chondroitin sulfate and hyaluronic acid.

Non-limiting examples of water-soluble synthetic polymers include polyvinyl alcohol, sodium polyacrylate, sodium polymethacrylate, polyacrylic acid glycerol ester, carboxyvinyl polymer, polyacrylamide, polyvinylpyrrolidone, polyvinyl methyl ether, polyvinyl sulfone, maleic acid, etc. Polymers, polyethylene oxide, polydiallylamine, polyethyleneimine, water-soluble cellulose derivatives (e.g. carboxymethylcellulose, methylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, cellulose sulfate sodium salt) and starch derivatives (e.g. starch oxide, dialdehyde starch, dextrin, British gum, acetyl starch, starch phosphate, carboxymethyl starch, hydroxyethyl starch, hydroxypropyl starch).

volatile hydrocarbon oil(s)
The term "volatile hydrocarbon" refers to a hydrocarbon that is volatile at normal temperature (25° C.) and normal pressure (1 atmosphere) and may include, for example, isododecane, isohexadecane. Volatile hydrocarbons may be in the form of oils. The term "oil" means a liquid at normal temperature (25°C) and normal pressure (1 atm) and not soluble in water when introduced into water at 25°C in a proportion of at least 1% by weight; or compounds that are soluble in water to a level of less than 10% by weight relative to the weight of the oil introduced. The term "hydrocarbon oil" is an oil containing hydrogen and carbon atoms and no silicon atoms.

Suitable volatile hydrocarbons include, but are not limited to, those having 8 to 16 carbon atoms, and mixtures thereof, especially branched C ₈ -C ₁₆ alkanes, such as C ₈ -C ₁₆ isoalkanes (also known as isoparaffins). ), isododecane, isodecane, isohexadecane, and oils sold under the trade names ISOPAR or PERMETHYL, C ₈ to C ₁₆ branched esters, such as isohexyl or isodecyl neopentanoate, and mixtures thereof. Can be mentioned. Preferably the volatile hydrocarbon oil has a flash point below 60°C.

Optionally, the skin tightening composition comprises at least one volatile hydrocarbon selected from isoparaffins, isohexadecane, isododecane, isodecane, undecane, tridecane, dodecane, isohexyl, isodecyl, neopentanoate, or mixtures thereof. include. In at least one example, isododecane and/or isoparaffins (eg, C _8-9 isoparaffins) are preferred. The skin tightening composition may be formulated to include volatile hydrocarbons that do not contain silicon atoms.

The total amount of volatile hydrocarbons may vary, but typically ranges from about 30 to about 85 wt., based on the total weight of the skin tightening composition. %. In some cases, the total amount of volatile hydrocarbons is from about 30 to about 80 wt., based on the total weight of the skin tightening composition. %, about 30 to about 75 wt. %; about 35 to about 85 wt. %, about 35 to about 80 wt. %, about 35 to about 75 wt. %; about 40 to about 85 wt. %, about 40 to about 80 wt. %, about 40 to about 75 wt. %; about 45 to about 85 wt. %, about 45 to about 80 wt. %, about 45 to about 75 wt. %; about 50 to about 85 wt. %, about 50 to about 80 wt. %, about 50 to about 75 wt. %; about 55 to about 85 wt. %, about 55 to about 80 wt. %, about 55 to about 75 wt. %; about 60 to about 85 wt. %, about 60 to about 80 wt. %, about 60 to about 75 wt. %; about 65 to about 85 wt. %, about 65 to about 80 wt. %, or about 65 to about 75 wt. % (including ranges and subranges thereof).

Fatty Compounds In addition to the volatile hydrocarbon oils mentioned above, the skin tightening composition may optionally contain one or more fatty compounds, especially non-volatile fatty compounds. The total amount of fatty compounds, if present, in the skin tightening composition can vary, but typically ranges from about 0.1 to about 20 wt., based on the total weight of the skin tightening composition. %. In some cases, the total amount of emulsified fatty compounds in the skin tightening composition is from about 0.1 to about 15 wt., based on the total weight of the skin tightening composition. %, about 0.1 to about 10 wt. %, about 0.1 to about 5 wt. %, about 1 to about 20 wt. %, about 1 to about 15 wt. %, about 1 to about 10 wt. %, about 1 to about 5 wt. %; about 2 to about 20 wt. %, about 2 to about 15 wt. %, about 2 to about 10 wt. %, about 2 to about 5 wt. %; about 4 to about 20 wt. %, about 4 to about 15 wt. %, about 4 to about 10 wt. %, about 4 to about 5 wt. % (including ranges and subranges thereof).

Non-limiting examples of fixed oils include:
i. Hydrocarbon oils of animal origin, such as perhydrosqualene;
ii. Vegetable hydrocarbon oils, such as liquid triglycerides of fatty acids, such as sunflower oil, corn oil, soybean oil, bone marrow oil, grape seed oil, sesame oil, hazelnut oil, apricot oil, macadamia oil, castor oil, avocado oil, caprylic/capric acid triglycerides;
iii. an oil of the formula R ₉ COOR ₁₀ , where R ₉ represents a higher fatty acid residue containing from 7 to 19 carbon atoms and R ₁₀ represents a branched hydrocarbon chain containing from 3 to 20 carbon atoms; For example, purcellin oil;
iv. Straight-chain or branched-chain hydrocarbons of mineral or synthetic origin, such as non-volatile liquid paraffin and its derivatives, yellow petrolatum (petrolatum), polydecene, and hydrogenated polyisobutenes, such as param;
v. Synthetic esters and ethers of alcohols or polyhydric alcohols such as isopropyl myristate, octanoate, decanoate, ricinoleate;
vi. fatty alcohols such as octiododecanol or oleyl alcohol;
vii. partially hydrocarbonated and/or siliconized fluoro oils;
viii. Silicone oils, such as linear non-volatile polydimethylsiloxanes (dimethicone), phenyldimethicone, phenyltrimethicone and polymethylphenylsiloxane, which are liquid or pasty at room temperature; and mixtures thereof.

In some examples, the one or more fatty substances are selected from polyolefins (petrolatum), waxes, squalane, squalene, hydrogenated polyisobutenes, hydrogenated polydecenes, polybutenes, mineral oils, pentahydrosqualene, dimethicone, and mixtures thereof. obtain.

Further fatty compounds worth mentioning include fatty alcohols, fatty esters, fatty alcohol derivatives, fatty acid derivatives (such as those discussed below).

Fatty Alcohol The fatty compound or compounds may be glycerolated and/or oxyalkylenated, contain from 8 to 30 carbon atoms, and/or be saturated or unsaturated. Fatty alcohols useful herein include those having about 8 to about 30 carbon atoms, about 12 to about 22 carbon atoms, and about 14 to about 22 carbon atoms. These fatty alcohols can be straight-chain or branched-chain alcohols and can be saturated or unsaturated. Non-limiting examples of fatty alcohols include decyl alcohol, undecyl alcohol, dodecyl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, isocetyl alcohol, behenyl alcohol, linalool, oleyl alcohol, cis 4-t- Mention may be made of butylcyclohexanol, myricyl alcohol and mixtures thereof. In some cases, the fatty alcohol may include or be selected from at least one of myristyl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, isotridecyl alcohol, and mixtures thereof.

The saturated liquid fatty alcohol may be branched and optionally contain at least one aromatic or non-aromatic ring in its structure. However, in some instances the fatty alcohol is acyclic. Non-limiting examples of liquid saturated fatty alcohols include octyldodecanol, isostearyl alcohol, and 2-hexyldecanol.

The unsaturated liquid fatty alcohol may contain at least one double or triple bond in its structure. For example, fatty alcohols may contain a number of double bonds (such as 2 or 3 double bonds), which may be conjugated or unconjugated. Unsaturated fatty alcohols may be linear or branched, acyclic, or contain at least one aromatic or non-aromatic ring in their structure. The liquid unsaturated fatty alcohol may include or be selected from oleyl alcohol, linoleyl alcohol, linolenyl alcohol, and undecylenyl alcohol.

Non-limiting examples of solid fatty alcohols include straight chain or branched saturated or unsaturated alcohols containing 8 to 30 carbon atoms, such as myristyl alcohol, cetyl alcohol, stearyl alcohol and mixtures thereof, cetylstearyl alcohol can be mentioned.

Fatty Acid Esters The fatty compounds of the skin tightening composition may be fatty esters that are liquid or solid at 25° C. and 1 atmosphere. Fatty esters may include esters from C ₆ -C ₃₂ fatty acids and/or C ₆ -C ₃₂ fatty alcohols. For example, fatty compounds include fatty acid monoesters and fatty acid diesters, polyol esters, polyglycerol esters, polyglycerol polyricinoleate, polyglycerol poly-12-hydroxystearate, polyglycerol dimerate isostearate, ethylhexanoate, It may include or be selected from polyglycerol esters, as well as mixtures thereof. These esters are esters of saturated or unsaturated linear or branched C ₁ -C ₂₆ aliphatic mono- or polyacids and saturated or unsaturated linear or branched C ₁ -C ₂₅ aliphatic mono- or polyalcohols. The total number of carbon atoms in the ester is 10 or more. In one example, the fatty compound includes one or more fatty acid monoesters. In the case of esters of monoalcohols, at least one of the alcohols or acids from which the ester is formed is branched. Among the monoesters of monoacids and monoalcohols, alkyl myristates such as ethyl palmitate, isopropyl palmitate, isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate and Isostearyl neopentanoate may be mentioned.

In some examples, the fatty ester is a cetyl ester, such as an ester of saturated fatty acids and fatty alcohols. For example, the fatty ester may include or be selected from cetyl palmitate, cetyl stearate, myristyl myristate, myristyl stearate, cetyl myristate, stearyl stearate, cetearyl ethylhexanoate, and mixtures thereof. . In one example, the fatty esters include isopropyl isostearate, n-propyl myristate, isopropyl myristate, hexyl laurate, hexadecyl isostearate, hexidecyl laurate, hexyldecyl octoate, n-propyl palmitate, isopropyl palmitate and their like. It may be one or more of a mixture or selected from them. In another example, the fatty esters include diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptyl undecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, Ethylene glycol -2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octoate, octyldodecyl rubber ester, oleyl oleate, Octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, isocetyl stearate, butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate , isopropyl palmate, 2-ethylhexyl palmate, 2-hexyldecyl palmate, 2-heptyl undecyl palmate, cholesteryl 12-hydroxystearate, dipentaerythritol fatty acid ester, isopropyl myristate, octyldodecyl myristate, myristic acid 2-hexyldecyl, myristyl myristate, hexyldecyl dimethyloctoate, ethyl laurate, hexyl laurate, diisostearyl malate, dicaprylyl carbonate, cetearyl ethylhexanoate, and mixtures thereof. It's okay. In yet a further example, the skin tightening composition may include or have one or more fatty compounds selected from cetearyl alcohol, cetearyl ethylhexanoate, isopropyl myristate, and mixtures thereof.

Non-limiting examples of solid fatty acid esters and/or fatty acid esters that may be mentioned include solid esters obtained from C ₉ -C ₂₆ fatty acids and C ₉ -C ₂₅ fatty alcohols. Among these esters, octyldodecyl behenate, isocetyl behenate, cetyl lactate, stearyl octoate, octyl octoate, cetyl octoate, decyl oleate, myristyl stearate, octyl palmitate, octyl pelargonate, octyl stearate, Mention may be made of alkyl myristates such as cetyl myristate, myristyl myristate or stearyl myristate, and hexyl stearate.

Non-limiting examples of liquid fatty acids include triglyceride oils of vegetable or synthetic origin, such as liquid fatty acid triglycerides containing 6 to 30 carbon atoms, such as heptanoic acid or octanoic acid triglycerides, or alternatively, such as sunflower oil, corn oil. , soybean oil, bone marrow oil, grapeseed oil, sesame seed oil, hazelnut oil, apricot oil, macadamia oil, Arara oil, castor oil, avocado oil, olive oil, rapeseed oil, coconut oil, wheat germ oil, sweet almond oil, apricot oil , safflower oil, kukui oil, coconut oil, camelina oil, tamanu oil, babassu and prax oil, jojoba oil, shea butter oil, and mixtures thereof. In one example, the one or more fatty acid compounds include fatty acid triglycerides, oils, mineral oils, alkanes, fatty alcohols, fatty acids, fatty alcohol derivatives, alkoxylated fatty acids, polyethylene glycol esters of fatty acids, propylene glycol esters of fatty acids, butylene glycol esters of fatty acids. , esters of neopentyl glycol and fatty acids, polyglycerol/glycerol esters of fatty acids, glycol diesters, diesters of ethylene glycol and fatty acids, esters of fatty acids and fatty alcohols, esters of short-chain alcohols and fatty acids, esters of fatty alcohols, hydroxy-substituted fatty acids , wax, and mixtures thereof. In another example, the fatty compound of the skin tightening composition comprises one or more fatty acid triglycerides, such as caprylic/capric triglyceride.

Fatty Alcohol Derivatives Skin tightening compositions may, in some examples, include fatty alcohol derivatives, such as alkyl ethers of fatty alcohols, alkoxylated fatty alcohols, alkyl ethers of alkoxylated fatty alcohols, esters of fatty alcohols, and mixtures thereof. . Non-limiting examples of fatty alcohol derivatives include methyl stearyl ether; 2-ethylhexyl dodecyl ether; stearyl acetate; cetyl propionate; ceteth series compounds such as ceteth-1 to ceteth-45, which are ethylene glycol ethers of cetyl alcohol. (Ethylene glycol ether of ceteth alcohol, the numerical designation indicates the number of ethylene glycol moieties present); Steareth-1 to 10 Steareth series compounds (ethylene glycol ether of steareth alcohol, numerical designation indicates the number of ethylene glycol moieties present); ceteareth-1 to ceteareth-10 (ethylene glycol ethers of ceteareth alcohols, i.e., mixtures of fatty alcohols containing primarily cetyl and stearyl alcohol; numerical values designations indicate the number of ethylene glycol moieties present); C1-C30 alkyl ethers of the ceteth, steareth, and ceteareth compounds just described; branched alcohols such as octyldodecyl alcohol, dodecylpentadecyl alcohol, hexyldecyl alcohol, and isostearyl alcohol polyoxyethylene ethers of behenyl alcohol; PPG ethers such as PPG-9-steareth-3, PPG-11 stearyl ether, PPG8-cetheth-1, and PPG-10 cetyl ether; and mixtures thereof. Examples include materials. The liquid fatty ether may be selected from liquid dialkyl ethers such as dicaprylyl ether. The non-liquid fatty ethers may also be selected from dialkyl ethers, especially dicetyl ether and distearyl ether, alone or in combination.

Esters of C ₄ -C ₂₂ dicarboxylic acids or tricarboxylic acids and C ₁ -C ₂₂ alcohols, and of monocarboxylic acids, dicarboxylic acids or tricarboxylic acids and C ₄ -C ₂₆ dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy non-sugar alcohols. Esters may also be used. In particular, diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; triisopropyl citrate; glyceryl trilactate; glyceryl trioctanoate; neopentyl glycol diheptanoate; and diethylene glycol diisononanoate. ates may be mentioned.

Fatty Acid Derivatives The skin tightening composition may optionally include fatty acid derivatives. Fatty acid derivatives are herein defined as fatty acid esters of fatty alcohols as defined above, fatty acid esters of fatty alcohol derivatives discussed above when such fatty alcohol derivatives have esterifiable hydroxyl groups, fatty alcohols and It is defined to include fatty acid esters of alcohols other than the fatty alcohol derivatives described above, hydroxy-substituted fatty acids, and mixtures thereof. Non-limiting examples of fatty acid derivatives include ricinoleic acid, glycerol monostearate, 12-hydroxystearic acid, ethyl stearate, cetyl stearate, cetyl palmitate, polyoxyethylene cetyl ether stearate, polyoxyethylene stearyl ether. Stearate, polyoxyethylene lauryl ether stearate, ethylene glycol monostearate, polyoxyethylene monostearate, polyoxyethylene distearate, propylene glycol monostearate, propylene glycol distearate, trimethylolpropane distearate, Sorbitan stearate, polyglyceryl stearate, dimethyl sebacate, PEG-15 cocoaate, PPG-15 stearate, glyceryl monostearate, glyceryl distearate, glyceryl tristearate, PEG-8 laurate, PPG-2 isostearate, Included are PPG-9 laurate and mixtures thereof.

Nonionic surfactant(s)
The skin tightening composition may optionally include one or more nonionic surfactants. Skin tightening compositions are typically emulsions when they contain one or more nonionic surfactants, but skin tightening compositions can alternatively contain such nonionic surfactants. When containing, it may be anhydrous.

Nonionic surfactant(s) include PEG-30 dipolyhydroxystearate, polyglyceryl-4 diisostearate/polyhydroxystearate/sebacate, polyglyceryl-4 isostearate, polyglyceryl-2 dipolyhydroxystearate dimethicone (and) peg/ppg-18/18 dimethicone, lauryl peg-9 polydimethylsiloxyethyl dimethicone, and mixtures thereof. Nonionic surfactants can be selected, for example, from alcohols, alpha-diols, alkylphenols and esters of fatty acids, these compounds being ethoxylated, propoxylated or glycerolated, for example containing 8 to 18 has at least one fatty chain containing carbon atoms. The number of ethylene oxide or propylene oxide groups of the aforementioned compounds may range from 2 to 50, and the number of glycerol groups may range from 1 to 30. Copolymers of ethylene oxide and/or propylene oxide; condensates of ethylene oxide and/or propylene oxide with fatty alcohols; polyethoxylated fatty amides containing, for example, 2 to 30 mol of ethylene oxide; for example, 1.5 to 5 glycerol groups; For example, polyglycerolated fatty amides containing 1.5 to 4 glycerol groups; ethoxylated fatty acid esters of sorbitan containing 2 to 30 mol of ethylene oxide; ethoxylated oils of vegetable origin; fatty acid esters of sucrose; fatty acid esters of polyethylene glycol; Polyethoxylated fatty acid mono- or diesters of glycerol (C6-C24) alkyl polyglycosides; N-(C6-C24) alkyl glucamine derivatives, amine oxides, such as (C10-C14) alkyl amine oxides or N-(C10-C14) Mention may be made of acylaminopropylmorpholine oxide; and mixtures thereof. Mention may also be made of maltose derivatives.

The nonionic surfactant may be selected from polyoxyalkylenated or polyglycerolated nonionic surfactants. As the oxyalkylene unit, an oxyethylene unit, an oxypropylene unit, or a mixture thereof is more preferable, and an oxyethylene unit is preferable.

Optionally, nonionic surfactants are esters of polyols with fatty acids having saturated or unsaturated chains containing, for example, 8 to 24 carbon atoms, preferably 12 to 22 carbon atoms, and alkoxylation thereof. Derivatives preferably having a number of alkylene oxides from 10 to 200, more preferably from 10 to 100, such as glyceryl esters of C ₈ -C ₂₄ , preferably C ₁₂ -C ₂₂ fatty acids or acids and their Alkoxylated derivatives preferably having a number of alkylene oxides from 10 to 200, more preferably from 10 to 100; polyethylene glycol esters of C ₈ -C ₂₄ , preferably C ₁₂ -C ₂₂ fatty acids or acids; alkoxylated derivatives thereof, preferably having a number of alkylene oxides from 10 to 200, more preferably from 10 to 100; sorbitol esters of C ₈ -C ₂₄ , preferably C ₁₂ -C ₂₂ fatty acids or acids; Alkoxylated derivatives thereof, preferably having a number of alkylene oxides from 10 to 200, more preferably from 10 to 100; C ₈ -C ₂₄ , preferably C ₁₂ -C ₂₂ fatty acids or acid sugars (sucrose , glucose, alkylglucose) esters and their alkoxylated derivatives, preferably having a number of alkylene oxides from 10 to 200, more preferably from 10 to 100; ethers of fatty alcohols; sugars and C ₈ -C ₂₄ , Preferably C ₁₂ -C ₂₂ fatty alcohols or ethers of alcohols; and mixtures thereof.

Examples of ethoxylated fatty acid esters that may be mentioned are adducts of ethylene oxide with esters of lauric acid, palmitic acid, stearic acid or behenic acid, and mixtures thereof, especially those containing 9 to 100 oxyethylene groups. , for example, PEG-9 to PEG-50 laurate (CTFA name: PEG-9 laurate to PEG-50 laurate); PEG-9 to PEG-50 palmitate (CTFA name: PEG-9 palmitate to PEG-50 palmitate); PEG- 9 to PEG-50 stearate (CTFA name: PEG-9 stearate to PEG-50 stearate); PEG-9 to PEG-50 palmitostearate; PEG-9 to PEG-50 behenate (CTFA name: PEG- 9 behenate to PEG-50 behenate); polyethylene glycol 100 EO monostearate (CTFA name: PEG-100 stearate); and mixtures thereof. As glyceryl esters of fatty acids, mention may be made in particular of glyceryl stearate (glyceryl mono-, di- and/or tristearate) (CTFA name: glyceryl stearate) or glyceryl ricinolate and mixtures thereof. Glyceryl esters of C ₈ -C ₂₄ alkoxylated fatty acids include, for example, polyethoxylated glyceryl stearates (glyceryl mono-, di- and/or tristearates), such as PEG-20 glyceryl stearate. Mixtures of these surfactants, for example products containing glyceryl stearate and PEG-100 stearate marketed under the name ARLACEL 165 by Uniqema, and glyceryl stearate (marketed under the name TEG1N by Goldschmidt) Products containing glyceryl mono- and distearate) and potassium stearate (CTFA name: Glyceryl Stearate SE) can also be used.

Typically, the amount of nonionic surfactant included in the skin tightening composition, if present, is from about 0.5 to about 10 wt., based on the total weight of the skin tightening composition. %, about 0.5 to about 8 wt. %, about 0.5 to about 6 wt. %, about 0.5 to about 5 wt. %, about 0.5 to about 4 wt. %; about 1 to about 10 wt. %, about 1 to about 8 wt. %, about 1 to about 6 wt. %, about 1 to about 5 wt. %, about 1 to about 4 wt. %; about 2 to about 10 wt. %, about 2 to about 8 wt. %, about 2 to about 6 wt. %, about 2 to about 5 wt. %, about 2 to about 4 wt. %; about 3 to about 10 wt. %, about 3 to about 8 wt. %, about 3 to about 6 wt. %, about 3 to about 5 wt. %, about 3 to about 4 wt. % range (including all ranges and subranges thereof).

Dispersant(s)
The skin tightening composition may optionally include one or more dispersants. Dispersants include polyoxyethylene glycol ethers or esters (POE/PEG ethers or esters) or polyoxypropylene glycol ethers or esters (PPG ethers or esters), sugar ethers or esters, glycerol or polyglycerol ethers or esters, and ethoxylated It may be selected from glyceride esters (POE glyceryl esters), polyhydroxystearic acids, or mixtures thereof.

Dispersants protect the various components of the skin tightening composition, such as colored particles that are solid at room temperature and atmospheric pressure, from agglomeration or flocculation when it is placed in contact with an aqueous composition. can be selected as follows. More generally, the dispersant may be a surfactant, an oligomer, a polymer or some mixture thereof having one or more functional groups that have a strong affinity for the surface of the compound being dispersed. In some examples, the dispersant can be physically adsorbed to the surface of the particles being dispersed. In at least one example, the dispersant is selected from those having hydrophilic properties with an HLB of 10 or less, 7 or less, or 6 or less. The term "HLB 10 or less" means a surfactant with an HLB balance (hydrophilic-lipophilic balance) of 10 or less at 25° C. within the meaning of Griffin. The dispersant may be non-ionic and/or contain polyoxyethylene glycol ethers or esters (POE/PEG ethers or esters) or polyoxypropylene glycol ethers or esters (PPG ethers or esters), sugar ethers or esters. It may be selected from esters, glycerol or polyglycerol ethers or esters, and ethoxylated glyceride esters (POE glyceryl esters) or mixtures thereof.

Typically, the amount of dispersant, if present, included in the skin tightening composition will be from about 0.1 to about 10 wt., based on the total weight of the skin tightening composition. %, 0.5 to about 10 wt. %, about 0.5 to about 8 wt. %, about 0.5 to about 6 wt. %, about 0.5 to about 5 wt. %, about 0.5 to about 4 wt. %; about 1 to about 10 wt. %, about 1 to about 8 wt. %, about 1 to about 6 wt. %, about 1 to about 5 wt. %, about 1 to about 4 wt. %; about 1.5 to about 10wt. %, about 1.5 to about 8 wt. %, about 1.5 to about 6 wt. %, about 1.5 to about 5 wt. %, about 1.5 to about 4 wt. % range (including all ranges and subranges thereof).

Water-Soluble Solvents The skin tightening composition may optionally include one or more water-soluble solvents. The term "water-soluble solvent" is interchangeable with the term "water-miscible solvent" and is a liquid at 25°C and atmospheric pressure (760 mmHg) and has at least 50% solubility in water under these conditions. means a compound. In some cases, the water-soluble solvent has a solubility of at least 60%, 70%, 80%, or 90%. Non-limiting examples of water-soluble solvents include, for example, glycerin, C _1-4 alcohols, organic solvents, fatty alcohols, fatty ethers, fatty esters, polyols, glycols, and any mixtures thereof. Optionally, the skin tightening composition includes one or more C _1-4 alcohols, such as ethanol.

Examples of organic solvents include monoalcohols and polyols, such as ethyl alcohol, isopropyl alcohol, propyl alcohol, benzyl alcohol and phenylethyl alcohol, or glycols or glycol ethers, such as the monomethyl, monoethyl and monobutyl ethers of ethylene glycol, propylene glycol or their like. Non-limiting mention may be made of ethers, such as propylene glycol, butylene glycol, hexylene glycol, monomethyl ether of dipropylene glycol, and alkyl ethers of diethylene glycol, such as monoethyl ether or monobutyl ether of diethylene glycol. Other suitable examples of organic solvents are ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, propanediol and glycerin. Organic solvents can be volatile or non-volatile compounds.

Further non-limiting examples of water-soluble solvents include alkanediols (polyhydric alcohols), such as glycerin, 1,2,6-hexanetriol, trimethylolpropane, ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, Tetraethylene glycol, pentaethylene glycol, dipropylene glycol, 2-butene-1,4-diol, 2-ethyl-1,3-hexanediol, 2-methyl-2,4-pentanediol, (caprylyl glycol), 1,2-hexanediol, 1,2-pentanediol, and 4-methyl-1,2-pentanediol; alkyl alcohols having 1 to 4 carbon atoms such as ethanol, methanol, butanol, propanol, and isopropanol; Glycol ethers, such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monomethyl ether acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol mono-n-propyl ether, ethylene glycol mono-iso- Propyl ether, diethylene glycol mono-iso-propyl ether, ethylene glycol mono-n-butyl ether, ethylene glycol mono-t-butyl ether, diethylene glycol mono-t-butyl ether, 1-methyl-1-methoxybutanol, propylene glycol monomethyl ether, propylene glycol Monoethyl ether, propylene glycol mono-t-butyl ether, propylene glycol mono-n-propyl ether, propylene glycol mono-iso-propyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol mono-n- Propyl ether and dipropylene glycol mono-iso-propyl ether; 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, formamide, acetamide, dimethyl sulfoxide, sorbitol, sorbitan, acetin , diacetin, triacetin, sulfolane and mixtures thereof.

Polyhydric alcohols are useful. Examples of polyhydric alcohols include glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,3-butanediol, 2,3-butanediol, 1,4-butanediol. , 3-methyl-1,3-butanediol, 1,5-pentanediol, tetraethylene glycol, 1,6-hexanediol, 2-methyl-2,4-pentanediol, polyethylene glycol, 1,2,4- Mention may be made of butanetriol, 1,2,6-hexanetriol and mixtures thereof. Polyol compounds may also be used. Non-limiting examples include aliphatic diols such as 2-ethyl-2-methyl-1,3-propanediol, 3,3-dimethyl-1,2-butanediol, 2,2-diethyl-1,3 -Propanediol, 2-methyl-2-propyl-1,3-propanediol, 2,4-dimethyl-2,4-pentanediol, 2,5-dimethyl-2,5-hexanediol, 5-hexene-1 , 2-diol and 2-ethyl-1,3-hexanediol and mixtures thereof.

The total amount of water-soluble solvent, if present, in the skin tightening composition can vary, but typically ranges from about 0.01 to about 25 wt.% based on the total weight of the skin tightening composition. %. Optionally, the total amount of water-soluble solvent is from about 0.01 to about 20 wt., based on the total weight of the skin tightening composition. %, about 0.01 to about 15 wt. %, about 0.01 to about 10 wt. %, about 0.1 to about 25 wt. %, about 0.1 to about 20 wt. %, about 0.1 to about 15 wt. %, about 0.1 to about 10 wt. %, about 1 to about 25 wt. %, about 1 to about 20 wt. %, about 1 to about 15 wt. %, about 1 to about 10 wt. %, or about 1 to about 8 wt. % (including all ranges and subranges thereof).

Filler(s)
The skin tightening composition typically contains about 0.5 to about 20 wt.% based on the total weight of the skin tightening composition. % of one filler. The filler may be about 0.5 to about 20 wt., based on the total weight of the skin tightening composition. %, about 1 to about 20 wt. %, about 1.5 to about 20 wt. %, about 2 to about 20 wt. %, about 2.5 to about 20 wt. %, about 3 to about 20 wt. %, about 3.5 to about 20 wt. %, about 4 to about 20 wt. %, about 4.5 to about 20 wt. %, about 5 to about 20 wt. %, about 6 to about 20 wt. %, about 7 to about 20 wt. %, about 8 to about 20 wt. %; about 1.5 to about 13 wt. %, about 1 to about 13 wt. %, about 1.5 to about 13 wt. %, about 2 to about 13 wt. %, about 2.5 to about 13 wt. %, about 3 to about 13 wt. %, about 3.5 to about 13 wt. %, about 4 to about 13 wt. %, about 4.5 to about 13 wt. %, about 5 to about 13 wt. %, about 6 to about 13 wt. %, about 7 to about 13 wt. %, about 8 to about 13 wt. %; about 0.5 to about 11 wt. %, about 1 to about 11 wt. %, about 1.5 to about 11 wt. %, about 2 to about 11 wt. %, about 2.5 to about 11 wt. %, about 3 to about 11 wt. %, about 3.5 to about 11 wt. %, about 4 to about 11 wt. %, about 4.5 to about 11 wt. %, about 5 to about 11 wt. %, about 6 to about 11 wt. %, about 7 to about 11 wt. %, about 8 to about 11 wt. %; about 0.5 to about 9wt. %, about 1 to about 9 wt. %, about 1.5 to about 9 wt. %, about 2 to about 9 wt. %, about 2.5 to about 9 wt. %, about 3 to about 9 wt. %, about 3.5 to about 9 wt. %, about 4 to about 9 wt. %, about 4.5 to about 9 wt. %, about 5 to about 9 wt. %, about 6 to about 9 wt. %, about 7 to about 9 wt. %; about 0.5 to about 7wt. %, about 1 to about 7 wt. %, about 1.5 to about 7 wt. %, about 2 to about 7 wt. %, about 2.5 to about 7 wt. %, about 3 to about 7 wt. %, about 3.5 to about 7 wt. %, about 4 to about 7 wt. %, about 4.5 to about 7 wt. %, or about 5 to about 7 wt. % (including all ranges and subranges thereof).

One filler is nylon-12, cellulose, methacrylate crosspolymers (e.g., methyl methacrylate crosspolymer), silicone powder (e.g., polymethylsilsesquioxane), silica, silica silylate, fumed silica, and A mixture thereof may also be used.

Additional fillers may include polysilicates such as magnesium silicate, calcium silicate, aluminum silicate, polysilicate clay, montmorillonite, bentonite, smectite, and mixtures thereof. For example, the filler may include magnesium aluminum silicate.

Soft Focus Powder The skin tightening composition may optionally include a soft focus powder. Soft focus powders are materials that provide a blurring effect, usually due to their light scattering properties on the skin. Such powders typically have high diffuse reflectance, low specular reflectance, and high diffuse transmittance. Soft focus powders give the skin a smoother appearance, for example by reducing the difference in brightness between the valleys and edges of wrinkles and imperfections.

Non-limiting examples of soft focus powders include mica, titanized mica, alumina, titanium dioxide, celite, composite talc/titanium dioxide/alumina/silica powder, polyamide, poly(methyl(meth)acrylate), polyethylene powder, Included are powders of natural or synthetic origin, such as polymethylsilsesquioxane powder, sodium acrylate crosspolymer-2, and mixtures thereof. Further non-limiting examples include calcium aluminum borosilicate (LUXSIL), PMMA (Microsphere M-100), polyethylene (POLYETHYLENE Cl 2080), methyl methacrylate crosspolymer (COVABEADS LH85), nylon-12 (ORGASOL 2002), or Ethylene/acrylic acid copolymer (FLOBEADS EA209) is mentioned. In some cases, the skin tightening composition may include coated or uncoated silica, fumed silica, silica silylate, composite talc/titanium dioxide/alumina/silica powder, polyamide (nylon), poly(methyl (meth)acrylate), polyethylene powder, polymethylsilsesquioxane powder, waxes such as Copernica serifera (carnauba) wax, dimethicone/vinyl dimethicone crosspolymer, nylon-12, cellulose, polylactic acid, boron nitride, and the like. at least one soft focus powder selected from the group consisting of a mixture of. Copernicia serifera (carnauba) wax can be provided as a non-aqueous and alcoholic dispersion. Dimethicone/vinyl dimethicone crosspolymer can be provided as a silicone dispersion (INCI: Dimethicone/vinyl dimethicone crosspolymer (and) C12-14 Pareth-12). In some cases, the soft focus powder is (or comprises) sodium acrylate crosspolymer-2 (and) water (and) silica commercially available as AQUAKEEP 10SH-NFC.

The total amount of soft focus powder, if present, can vary, but typically ranges from about 0.1 to about 20 wt. based on the total weight of the skin tightening composition. %. In some cases, the total amount of soft focus powder is from about 0.1 to about 20 wt., based on the total weight of the skin tightening composition. %, about 0.1 to about 18 wt. %, about 0.1 to about 16 wt. %, about 0.1 to about 15 wt. %, about 0.1 to about 14 wt. %, about 0.1 to about 12 wt. %, about 0.1 to about 10 wt. %, about 0.1 to about 5 wt. %, about 1 to about 20 wt. %, about 1 to about 18 wt. %, about 1 to about 16 wt. %, about 1 to about 15 wt. %, about 1 to about 14 wt. %, about 1 to about 12 wt. %, about 1 to about 10 wt. %, or about 1 to about 8 wt. %, about 2 to about 20 wt. %, about 2 to about 18 wt. %, about 2 to about 16 wt. %, about 2 to about 14 wt. %, about 2 to about 12 wt. %, about 2 to about 10 wt. %, about 2 to about 8 wt. %, about 4 to about 20 wt. %, about 4 to about 18 wt. %, about 4 to about 16 wt. %, about 4 to about 14 wt. %, about 4 to about 12 wt. %, about 4 to about 10 wt. %, about 4 to about 8 wt. % (including ranges and subranges thereof).

Pigment The composition may include at least one pigment, for example, to create a colored film on the skin that may be useful in concealing certain skin imperfections. In various embodiments, at least one pigment may be selected from inorganic pigments or organic pigments.

As used herein, the term "pigment" is intended to mean white or colored mineral or organic particles, alone or coated on a substrate, that are insoluble in the composition in which they are present. However, it can be further processed by various treatment processes using various chemical coatings. The pigment is intended to color and/or opacify the resulting film. When pigments are coated with hydrophobic groups, the treated pigments are more hydrophobic and therefore better dispersed in the oil phase of O/W or W/O emulsions. If the pigment is coated with hydrophilic groups, it is more hydrophilic and therefore better dispersed in the aqueous phase of the W/O or O/W emulsion.

As used herein, untreated pigments are pigments that have not undergone a coating process that substantially alters their hydrophobicity or hydrophilicity. The average particle size or diameter of the pigment is typically less than about 1 μm, and more typically greater than about 0.1 μm.

Inorganic Pigments For example, inorganic pigments that may be used include titanium oxide, zirconium oxide, alumina, calcium carbonate, barium sulfate, calcium sulfate, cerium oxide, zinc oxide, iron oxide, chromium oxide, deep blue, manganese violet, ultramarine, chromium. Mention may be made of hydrates and titanium dioxide, composite particles containing them, and mixtures thereof. For example, the pigment may be selected from titanium dioxide and red, black and/or yellow iron oxides, and mixtures thereof. It is also possible to use mixtures of different types of pigments. Also included are colloidal silica/alumina composite particles. The term "silica/alumina composite" refers to silica particles in which the aluminum atoms are partially replaced by silicon atoms, i.e. the surface is chemically modified to replace at least some of the silicon atoms with aluminum atoms. is understood to mean particles consisting of silicon oxide forming up to a monolayer of aluminum.

Uncoated or untreated titanium oxide pigments are available, for example, under the name Microtitanium Dioxide MT500 B or Microtitanium Dioxide MT 600 B by the company Tayca, under the name P25 by Degussa, under the name Transp by the company Wacker. arent titanium oxide PW, manufactured by Myoshi Kasei under the trade name UFTR, Tomen under the trade name ITS, Kobo under the trade name TIO2 CR-50 I2, Myoshi Kasei under the trade name NAI-TAO-77891, and Tioxide under the trade name It is sold at Tioveil AQ. Uncoated or untreated zinc oxide pigments are, for example, those sold under the name Z-Cote by Sunsmart; those sold under the name NanoX by Elementis; Nanogard from Nanophase Technologies. It is sold under the name WCD 2025.

Uncoated or untreated cerium oxide pigments are sold by the company Rhone-Poulenc under the name Colloidal Cerium Oxide. Uncoated or untreated iron oxide pigments are available, for example, from Arnaud under the names Nanogard WCD 2002 (FE 45B), Nanogard Iron FE 45 BLAQ, Nanogard FE45RAQ and Nanogard WCD 2006 (FE 45R), Or Mitsubishi It is sold under the name TY-220 by the company.

Non-limiting examples may include pearlescent pigments, such as pigmented mica and pigmented alumina. Surface-treated composite pigments such as surface-treated titanium oxide/alumina composites and iron oxide/alumina composites are available under the trade names COVALUMINE SONOMA YELLOW AS, COVALUMINE SONOMA RED AS, COVALUMINE ATLAS WHITE AS, and COVALUMI NE SONOMA BLACK AS is sold by Sensient.

Nacre can be made of white pearlescent pigments such as mica coated with titanium or bismuth oxychloride, colored pearlescent pigments such as titanium mica with iron oxide, especially titanium mica with deep blue or chromium oxide, organic pigments of the above types. and nacreous pigments based on bismuth oxychloride.

For the purposes of the present invention, the term "nacre" refers to the fact that it may or may not be iridescent, is produced by certain molluscs in particular in its shell, or is alternatively synthesized, and is formed by optical interference. means colored particles of any shape that have a color effect through.

The nacre used in the composition according to the invention may be in lamellar (or platelet form), spherical (or spherical) form, or any other intermediate form between these defined forms.

In this patent application, the term "spherical particles" means particles in the form of spheres or substantially in the form of spheres.

The term "lamellar particle" or "platelet morphology" as used herein refers to parallelepiped shape (rectangular or square surface), disk shape (circular (surface) or elliptical (oblong surface) particles.

Nacre can be formed of mica coated with iron oxide, mica coated with bismuth oxychloride, mica coated with titanium oxide or titanium dioxide, mica coated with chromium oxide, mica coated with tin oxide, mica coated with SnO2. One can choose from coated mica, BaSO4 coated mica, organic dye coated mica, and nacre pigments such as nacre pigments based on bismuth oxychloride.

They may also be mica particles on whose surface at least two successive layers of metal oxides and/or organic dyes are superimposed.

Examples of nacres that may be mentioned are titanium oxide, iron oxide, natural micas coated with natural pigments or bismuth oxychloride.

In particular, it may be mentioned that nacre is platelet mica coated with titanium oxide, iron oxide or both.

Among the nacres available on the market, nacres Timica® sold by BASF, Flamenco and Duochrome (based on mica) sold by Engelhard, Timiron pearls sold by Merck & Co. Mica-based nacre, Prestige mica-based nacre, sold by Eckart, and Sunshine synthetic mica-based nacre, sold by Sun Chemical.

The nacre may more particularly have a yellow, pink, red, bronze, orange, brown, golden and/or coppery color or shade.

According to a preferred embodiment, nacre useful in the present invention is in the form of platelets. More specifically, nacre is a platelet of mica, the surface of which is superimposed with at least two successive layers of metal oxide.

This type of mother-of-pearl is commercially available, for example from BASF under the trade name Timica® Terra White MN4501, which is a white powder.

In further embodiments, pigments may be used that have a structure that may be, for example, silica microspheres containing iron oxide types. An example of a pigment with this structure is the product sold by the company Miyoshi under the standard PC Ball PC-LL-100 P, which is composed of silica microspheres containing yellow iron oxide.

Oil Dispersible Pigments The skin tightening composition may include one or more oil dispersible pigments. Typically, hydrophobic treatments are used to make pigments dispersible in oil. In one or more embodiments, the one or more oil-soluble dispersible pigments include untreated iron oxide/titanium dioxide, iron oxide/titanium dioxide (and) isopropyl titanium triisostearate, alumina (and) iron oxide. / titanium dioxide (and) triethoxycaprylylsilane (and) silica dimethyl silylate, mica (and) iron oxide/titanium dioxide, iron oxide/titanium dioxide (and) disodium stearoylglutamate (and) aluminum hydroxide, and the like. selected from a mixture of

The total amount of oil-dispersible pigment present can vary, but typically ranges from about 1.0 to about 20 wt. based on the total weight of the skin tightening composition. %. The total amount of water-dispersible pigment is typically about 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4. 0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5 to about 9.5 , 10, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, 15.0, 15.5, 16.0 , 16.5, 17.0, 17.5, 18.0, 18.5, 19.0, 19.5, and 20wt. % (including ranges and subranges thereof).

Water Dispersible Pigments The skin tightening composition may include one or more water dispersible pigments. Typically, hydrophilic treatments are used to make pigments water-dispersible. In one or more embodiments, the one or more water-soluble dispersible pigments are hydrophilic phytic acid-treated pigments (=iron oxide (and) phytic acid), silica-coated pigments (=iron oxide (and) silica), ), PEG silane coated hydrophilic pigments, sodium glycerophosphate coated hydrophilic pigments, Algin coated hydrophilic pigments and mixtures thereof.

Non-limiting examples include superhydrophilic phytic acid coated TiO2, phytic acid superhydrophilic surface treated yellow iron oxide, superhydrophilic phytic acid treated red iron oxide, superhydrophilic phytic acid treated and mixtures thereof.

The total amount of water-dispersible pigment present can vary, but typically ranges from about 1.0 to about 20 wt., based on the total weight of the skin tightening composition. %. The total amount of water-dispersible pigment is typically about 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4. 0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5 to about 9.5 , 10, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, 15.0, 15.5, 16.0 , 16.5, 17.0, 17.5, 18.0, 18.5, 19.0, 19.5, and 20wt. % (including ranges and subranges thereof).

The total amount of water and oil dispersible pigments present can vary, but typically ranges from about 1.0 to about 20 wt. based on the total weight of the skin tightening composition. %. The total amount of water-dispersible pigment is typically about 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4. 0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5 to about 9.5 , 10, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0, 14.5, 15.0, 15.5, 16.0 , 16.5, 17.0, 17.5, 18.0, 18.5, 19.0, 19.5, and 20wt. % (including ranges and subranges thereof).

Organic Pigments As further examples, organic pigments that may be used include nitroso, nitro, azo, xanthene, pyrene, quinoline, anthraquinone, triphenylmethane, fluorane, phthalocyanine, metal complexes, isoindolinone, isoindoline, quinacridone, perinone, Included are perylene, diketopyrrolopyrrole, indigo, thioindigo, dioxazine, triphenylmethane and quinophthalone compounds. For example, organic pigments include carmine lake, carbon black, aniline black, azo yellow, quinacridone, phthalocyanine blue, blue pigments classified in the Color Index under reference CI 42090, 69800, 69825, 73000, 74100 and 74160, reference CI Yellow pigments classified in the Color Index under reference CI 61565, 61570 and 74260, reference CI Orange pigments classified in the color index under 11725, 15510, 45370 and 71105, reference CI 12085, 12120, 12370, 12420, 12490, 14700, 15525, 15580, 15620, 15630, 15800, 15850, 15865, 15880 , Red pigments classified in the Color Index under 17200, 26100, 45380, 45410, 58000, 73360, 73915 and 75470 and pigments obtained by oxidative polymerization of indole or phenol derivatives as described in FR 2 679 771 can be selected from.

It is to be understood that the greater the amount of pigment added, the greater the effect of the film on the skin for concealing skin imperfections such as pores, pimples, dark spots, etc. A person skilled in the art will therefore be able to select the appropriate amount of pigment for the composition, keeping in mind the intended use of the final formulation.

Skin Active Agents The skin tightening composition optionally contains anti-aging agents, anti-wrinkle actives, anti-peeling agents, anti-dark circle actives, antioxidants, humectants, moisturizing ingredients, bleaching agents, and/or treating oily skin. It may also contain one or more skin active agents, such as agents for skin protection. The skin active agent may be present in an amount of greater than 0 to about 10 wt., based on the total weight of the composition. % in the skin tightening composition. For example, the total amount of skin active agent may range from greater than 0 to about 9 wt., based on the total weight of the skin tightening composition. %, more than 0 to about 8 wt. %, more than 0 to about 7 wt. %, more than 0 to about 6 wt. %, more than 0 to about 5 wt. %, more than 0 to about 4 wt. %, more than 0 to about 3 wt. %, more than 0 to about 2 wt. %; about 10 ppm to about 10 wt. % (100,000 ppm), about 10 ppm to about 5 wt. % (50,000 ppm), about 10 ppm to about 2.5 wt. % (25,000 ppm), about 10 ppm to about 1 wt. % (10,000 ppm), about 10 ppm to about 0.5 wt. % (5,000 ppm), about 10 ppm to about 0.3 wt. % (3,000 ppm), about 10 ppm to about 0.2 wt. % (2,000 ppm), about 10 ppm to about 0.1 wt. % (1,000 ppm), about 10 ppm to 500 ppm; about 0.1 to about 10 wt. %, about 0.1 to about 5 wt. %, about 0.1 to about 2.5 wt. %, about 0.1 to about 1 wt. %, about 0.1 to about 0.5 wt. %; about 1 to about 10 wt. %, about 1 to about 8 wt. %, about 1 to about 6 wt. %, about 1 to about 5 wt. %, about 1 to about 4 wt. %, about 1 to about 3 wt. %; about 2 to about 10 wt. %, about 2 to about 8 wt. %, about 2 to about 6 wt. %, about 2 to about 5 wt. %, about 2 to about 4 wt. %; about 3 to about 10 wt. %, about 3 to about 8 wt. %, about 3 to about 6 wt. %, about 3 to about 5 wt. %; about 4 to about 10 wt. %, about 4 to about 8 wt. %, or about 4 to about 6 wt. (including ranges and subranges therebetween).

A non-limiting discussion of skin active agents that may optionally be included in skin tightening compositions is provided below.

Humectants and/or Moisturizing Ingredients Examples of humectants and/or moisturizing ingredients include glycerol and its derivatives, urea and its derivatives, in particular Hydrovance sold by National Starch, lactic acid, hyaluronic acid, AHA, BHA, pidolic acid. Sodium, xylitol, serine, sodium lactate, ectoine and its derivatives, chitosan and its derivatives, collagen, plankton, extract of Imperata cylindra sold under the name Moist 24 by Sederma, acrylic acid as Lipidure-HM from NOF Corporation Homopolymers of β-glucan, especially sodium carboxymethyl β-glucan Mibelle-AG-Biochemistry, mixtures of oils passionflower, apricot, corn and rice bran, sold under the name NutraLipids by Nestle, C-glycoside derivatives, especially C-13-D-xylopyranoside-2-hydroxypropane (30% by weight solution of the active substance in a water/propylene glycol mixture (60/40 wt%) as a product manufactured by Chimex under the trade name "Mexoryl SBB" ), rosehip oil sold by Nestle, zinc-enriched microalgae extract Prophyridium cruentum sold by Vincence under the name Algualane Zinc, and sold by Engelhard Lyon under the name Marine Filling Spheres. Marine-derived collagen and chondroitin sulfate spheres (Atelocollagen), hyaluronic acid spheres such as those sold by Engelhard Lyon, and arginine.

Depigmenting agents that may be incorporated into the skin tightening composition include alpha and beta arbutin, ferulic acid, rucinol and its derivatives, kojic acid, resorcinol and its derivatives, tranexamic acid and its derivatives, gentisic acid, homogentisic acid, methyl Gentisic acid or homogentisic acid, diacid, D-pantetheine calcium sulfonate, lipoic acid, ellagic acid, vitamin B3, linoleic acid and its derivatives, commercially available by Gattefosse, Chamomile, Uva sumac, Aloe family (Vera, Ferox, Bardensis) , certain compounds derived from plants such as mulberry, skullcap, water kiwifruit (Actinidia chinensis), extracts of Paeonia suffruticosa root, such as the one sold by Ichimaru Pharmacos under the name Liquid Botanpi Be, brown sugar (Sacchar um officialum ), such as those selected from the molasses extract sold by Taiyo Kagaku under the name Liquid Molasses, but this list is not exhaustive. Specific bleaching agents include alpha and beta arbutin, ferulic acid, kojic acid, resorcinol and derivatives, D-pantetheine calcium sulfonate, lipoic acid, ellagic acid, vitamin B3, water kiwifruit (Actinidia chinensis) sold by Gattefosse. , an extract of the root of Paeonia suffruticosa, such as that sold under the name Botanpi Liquid B by the company Ichimaru Pharmacos.

Anti-Wrinkle Actives The skin tightening composition may include one or more anti-wrinkle actives. The term "anti-wrinkle active" refers to a natural or synthetic compound that produces a biological effect, such as an increase in the synthesis and/or activity of certain enzymes, when in contact with areas of wrinkled skin, which and/or have the effect of reducing the appearance of fine wrinkles. Exemplary anti-wrinkle actives include desquamation agents, anti-glycation agents, inhibitors of NO-synthase, agents that stimulate the synthesis of dermal or epidermal macromolecules and/or prevent their degradation, fibroblasts and/or It may be selected from agents for stimulating the proliferation of keratinocytes, or agents for decreasing the differentiation of keratinocytes; muscle relaxants and/or skin deconstrictors, anti-free radical agents, and mixtures thereof. Examples of such compounds are adenosine and its derivatives and retinoids other than retinol (such as retinol palmitate, as mentioned above), ascorbic acid and its derivatives such as ascorbyl magnesium phosphate and ascorbyl glucoside; caffeine; nicotinic acid and its precursors such as nicotinamide; ubiquinone; glutathione and its precursors, such as L-2-oxothiazolidine-4-carboxylic acid, in particular the compounds C-glycosides described in EP-1345919 and their derivatives, especially EP- C-β-D-xylopyranoside-2-hydroxy-propane as described in 1345919, plant extracts containing Passiflora and extracts of olive leaves, as well as plants and their hydrolysates, such as rice protein hydrolysates or soybean protein. Algal extracts, especially laminaria, bacterial extracts, sapogenins, such as diosgenin, and extracts of plants of the genus Dioscoria, especially wild yam, containing a-hydroxy acids, f3-hydroxy acids, such as salicylic acid and n-octanoyl-5-salicylic acid. Oligopeptides and pseudodipeptides and their acyl derivatives, including in particular the acid {2-[acetyl-(3-trifluoromethyl-phenyl)-amino]-3-methyl-}acetic acid and lipopeptides, under the trade name SEDERMA Matrixyl 500 and Sold by the company as Matrixyl 3000; lycopene, manganese and magnesium salts, especially gluconate, and mixtures thereof. In at least one case, the skin tightening composition comprises adenosine derivatives, such as non-phosphate derivatives of adenosine, such as especially 2'-deoxyadenosine, 2',3'-adenosine isopropoylidene; toyocamycin, 1-methyladenosine, N-6-methyladenosine; includes adenosine N-oxide, 6-methylmercaptopurine riboside and 6-chloropurine riboside. Other derivatives include adenosine receptor agonists, such as adenosine phenylisopropyl (“PIA”), 1-methylisoguanosine, N6-cyclohexyladenosine (CHA), N6-cyclopentyladenosine (CPA), 2-chloro-N6-cyclopentyl Adenosine, 2-chloroadenosine, N6-phenyladenosine, 2-phenylaminoadenosine, MECA, N6-phenetyladenosine, 2-p-(2-carboxy-ethyl)phenethyl-amino-5'-N-ethylcarboxamide adenosine (CGS) -21680), N-ethylcarboxamide-adenosine (NECA), 5'(N-cyclopropyl)-carboxamide adenosine, DPMA (PD 129.944) and metrifudil.

Anti-Aging Actives The skin tightening composition may include one or more anti-aging actives. The anti-aging active may also contain at least one hydroxy acid selected from alpha, beta or polyhydroxy acids. Thus, in various embodiments, the hydroxy acid may be selected from the group consisting of lactic acid, glycolic acid, salicylic acid, malic acid, tartaric acid, citric acid, mandelic acid, lactobionic acid, gluconolactone, galactose, and mixtures thereof. .

Skin Active Agents for Oily Skin The skin tightening composition may optionally include a skin active agent to address oily skin. These agents can be sebum regulators or antiseborrheic agents that can modulate the activity of sebaceous glands. Exemplary skin active agents to address oily skin include retinoic acid, benzoyl peroxide, sulfur, vitamin B6 (pyridoxine or) chloride, selenium, samphire--cinnamon extract blend, tea and octanoylglycine, For example--15 Sepicontrol A5 TEA from Seppic--a mixture of cinnamon, sarcosine and octanoylglycine sold in particular by Seppic under the trade name Sepicontrol A5--zinc salts, such as zinc gluconate, zinc pyrrolidone carboxylate ( or zinc pidophosphate), zinc lactate, zinc aspartate, zinc carboxylate, zinc salicylate 20, zinc cysteate;--copper and copper pidolate as derivatives, especially Cuivridone Solabia - Arnica montana, Cinchona succirubra , Clove (Eugenia caryophyllata), Hop (Humulus lupulus), Hypericum perforatum (Hypericum perforatum), Peppermint (Mentha pipenta) 25 Rosemary (Rosmarinus officinalis) ), sage (Salvia officinalis) and thymus vulgaris plants - extracts of the algae Laminaria saccharina (all commercially available, for example, by Maruzen) - extracts of Spiraea ulmaria, for example those sold under the name Sebonormine by Silab - extracts of the alga Laminaria saccharina, for example by Biotechmarine 30 Sold under the name Phlorogine - burnet mixture (Sanguisorba officinalis/Poterium officinale), ginger (Zingiber officina), as sold under the name Sebustop by Solabia lis) rhizomes and cinnamon bark (Cinnamomum cassia) ) root extracts, such as those sold under the name Linumine by Lucas Meyer; Phellodendron extracts, such as Phellodendron extracts, such as those sold by Maruzen under the name Phellodendron extract BG, or Ichimaru Falcos; Ltd. under the name Oubaku Liquid B - Serenoa serrulata (saw palmetto) extract and sesame seed argan oil mixture extract, such as sold by Pentapharm under the name Regu SEB -- Mixtures of extracts of willowherb, Terminalia chebula, nasturtium and bioavailable zinc (microalgae), such as those sold under the name Seborilys Green Tech; Extracts of African prunes (Pygeum afrianum), such as those sold under the name African Prune (Pygeum afrianum) sterol lipid extract by Euromed; and those sold under the name Viapure Sabal by Actives International; extracts of saw palmetto (Serenoa serrulata), such as those sold by Seboclear Rahn; extracts of plantain blend, Berberis aquifolium and sodium salicylate 20, such as those sold under the name Seboclear Rahn; COSMACOL. by Sasol. RTM. Citric acid tri(C12-C13) sold under the name ECI; COSMACOL. by Sasol. RTM. Trialkyl citrate (C14-C15), sold under the name ECL - an extract of cloves as sold under the name Clove Extract Powder by Maruzen - sold under the name Lipofructyl Laboratories Serobiologiques 25--Lactic acid protein filtrate, such as that sold under the name Normaseb by Sederma;--Seaweed Laminaria extract, such as that sold under the name Laminarghane by Biotechmarine;--by Codif. Oligosaccharide seaweed Laminaria digitata, such as that sold under the name Phycosaccharide 30 AC; extracts of sugarcane, such as that sold under the name Policosanol by Sabinsa, Ichthyol; sulfonated shale oils, such as those sold under the name Ichtyol Pale by societe Libiol; extracts of Spiraea ulmaria, such as those sold under the name Cytobiol Ulmaire by societeLibiol; sebacic acid, especially by Sederma; Sold in the form of sodium polyacrylate gel under the name Sebosoft - glucomannan extracted from konjac tubers and modified with alkyl sulfonate chains, such as that sold under the name Biopol Beta by Arch Chemical - Extracts of Clara (Sophora angustifolia), such as those sold under the name Sophora powder or Sophora extract by Bioland; - Cinchona, such as those sold under the name Red Bark HS by Alban Muller. Extracts of the bark of Quillaja saponaria--such as those sold by Alban Muller under the name 15 Panama wood HS; extracts of Quillaja saponaria--such as those sold under the name Lipacide UG OR by SEPPIC; , glycine grafted to undecylene chains--AC. by Sederma. Mixtures of oleanolic acid and nordihydroguaiaretic acid, such as those sold in gel form under the name Net; 20--phthalimidoperoxyhexanoic acid--10-hydroxydecanoic acid, mixture acids-hydroxydecanoic acid October 25, sebacic acid and 1,10-decanediol, such as that sold under the name Acnacidol BG by Vincence, and mixtures thereof.

Antioxidants Vitamin C and its derivatives such as ascorbic acid, sodium ascorbate, the fat-soluble esters tetrahexyldecyl ascorbic acid and ascorbyl palmitate, magnesium ascorbyl phosphate, ascorbyl glucoside, glucosamine ascorbate, ascorbyl acetate may be used. Additionally, extracts from vitamin C-rich plants such as camberry (Myrciaria dubia), acerola, amla (emblica officinalis), as well as bioflavonoids from rose hips and citrus fruits, may be used, as well as water-soluble extracts such as hesperidin methyl chalcone. Bioflavonoids may also be used.

Sesame seeds (Sesamum indicum) or sesame lignans may also be added. Sesame seeds and their lignans (fibrous compounds associated with sesame seeds) act as antioxidants. Sesame seed lignans significantly enhance vitamin E activity.

Other antioxidants include tocopherols (e.g., d-α-tocopherol, d-β-tocopherol, d-γ-tocopherol, d-δ-tocopherol), tocotrienols (e.g., d-α-tocotrienol, d-β-tocopherol), -tocotrienol, d-γ-tocotrienol, d-δ-tocotrienol) and vitamin E (α-tocopherol acetate). These compounds may be isolated from natural sources, prepared by synthetic means, or mixtures thereof. A vitamin E preparation enriched in tocotrienols can be obtained by fractionating the vitamin E preparation to remove some of the tocopherols and recover a preparation with a higher concentration of tocotrienols. Useful tocotrienols are natural tocotrienols isolated, for example, from wheat germ oil, cereals or palm oil using high performance liquid chromatography, or from barley, brewer's grains or oats by alcoholic extraction and/or molecular distillation. It is a product. As used herein, the term "tocotrienols" includes tocotrienol-rich fractions obtained from these natural products as well as pure compounds. Increased glutathione peroxidase activity protects the skin from oxidative damage.

Additionally, carotenoids, particularly of the xanthophyll type, are also useful antioxidants that can be used. Xanthopyr type carotenoids include molecules such as lutein, canthaxanthin, cryptoxanthin, zeaxanthin, and astaxanthin. Xanthophylls protect compounds such as vitamin A, vitamin E, and other carotenoids.

The flavonoid active agent may be an antioxidant selected from the group of flavonoids. In some cases, the flavonoid is a flavanone (a derivative of 2,3-dihydro-2-phenylchromen-4-one). Flavones include butin, eriodictyol, hesperetin, hesperidin, homoeriodictyol, isosacranetin, naringenin, naringin, pinocumerin, poncillin, sakuranetin, sakuranin, and sterbin. The flavonoid may be a flavonol (a derivative of 3-hydroxy-2,3-dihydro-2-phenylchromen-4-one). Flavanols include tachyfolin, aromadedrine, crissandroside A, crissandroside B, xeroactinol, astilbin, and fuscin. Flavonoids can be flavones (derivatives of 2-phenylchromen-4-one). Flavones include apigenin, luteolin, tangeritin, chrysin, baicalein, scutellarein, wogonin, and the synthetic flavones: diosmin and flavoxate. The flavonoid can be a flavonol (a derivative of 3-hydroxy-2-phenylchromen-4-one). Flavonols include 3-hydroxyflavone, azaleatin, fisetin, galangin, gosypetin, kaempperid, kaempferol, isorhamnetin, morin, myricetin, natudaidine, pachypodol, quercetin, rhamnazine, rhamnetin, azalein, hyponoside, isoquercitin, kaempperithrin, myricitrin, quercitrin, Includes robinin, rutin, spireoside, xanthoramin, amlenin, icariin and troxerutin. The flavonoid can be a flavan-3-ol (a derivative of 2-phenyl-3,4-dihydro-2H-chromen-3-ol). Flavan-3-ols include catetin, epicatetin, epigallocatechin, epicatetin gallate, epigallocatechin gallate, epiafgeletin, fisetinidol, gibaultinidol, mesquitol, and robinetinidol. The flavonoid can be a flavan-4-ol (a derivative of 2-phenylchroman-4-ol). Flavan-4-ols include apiphorol and luteophorol. Flavonoids can be isoflavones (derivatives of 3-phenylchromen-4-one). Isoflavones include genistein, daidzein, biochanin A, formononetin, and the equol metabolite from daidzein.

The antioxidant may be an anthocyanidin (derivative of the 2-phenylchromenylium cation). Anthocyanidins include aurantinidin, cyanidin, delphinidin, europinidin, luteolinidin, pelargonidin, malvidin, peonidin, petunidin, rhodinidin, and xanthones.

The antioxidant can be a dihydrochalcone (a derivative of 1,3-diphenyl-1-propanone). Dihydrochalcones include phloretin, dihydrochalcone phloretin phlorizin, aspalathin, naringin dihydrochalcone, neohesperidin dihydrochalcone, and notofagin. Without limiting the mode of action of the present invention, dihydrochalcones may exert antioxidant effects by reducing reactive free radicals such as reactive oxygen and nitrogen species.

The antioxidant may be an anthocyanin. Anthocyanins and their derivatives are antioxidants. Anthocyanins encompass a class of flavonoid compounds that are naturally occurring water-soluble compounds responsible for the red, purple, and blue colors of many fruits, vegetables, grains, and flowers. Additionally, anthocyanins are collagenase inhibitors. Inhibition of collagenase helps prevent and reduce wrinkles, increase skin elasticity, etc. due to reduction of skin collagen. Anthocyanins can be obtained from any part of a variety of plant sources, such as fruits, flowers, stems, leaves, roots, bark, or seeds. Those skilled in the art will understand that certain parts of the plant may contain higher natural levels of anthocyanins, and therefore those parts are used to obtain the desired anthocyanins. In some examples, the antioxidant may include one or more betacyanins. Betacyanins, like anthocyanins, may be obtained from natural sources and are antioxidants.

The antioxidant may be a phenylpropanoid (a derivative of cinnamic acid). Phenylpropanoids include cinnamic acid, caffeic acid, ferulic acid, trans-ferulic acid (including its antioxidant pharmacore 2,6-dihydroxyacetophenome), 5-hydroxyferulic acid, sinapic acid, coumaryl. Includes alcohol, coniferyl alcohol, sinapyl alcohol, eugenol, chavicol, safrole, P-coumaric acid, and sinapic acid. Without limiting the mode of action of the present invention, phenylpropanoids can neutralize free radicals.

The antioxidant may be a chalcone (a derivative of 1,3-diphenyl-2-propen-1-one). Chalcone includes butein, ocanin, carthamine, malein, sophorazine, xanthohumol, flavocabain A, flavocabain B, flavocabain C, and synthetic safalcon.

The antioxidant may be a curcuminoid. Curcuminoids include curcumin, desmethoxycurcumin, bis-desmethoxycurcumin, tetrahydrocurcumin, and tetrahydrocurcuminoids. Curcumin and tetrahydrocurcuminoids may be derived from the rhizome of turmeric (Curcuma longa). Tetrahydrocurcumin, a metabolite of curcumin, was found to be a more potent antioxidant and more stable compared to curcumin.

The antioxidant may be a tannin. Tannins include tannin, telflavin B, glucogallin, gallic acid, and quercitanic acid.

The antioxidant may be a stilbenoid. Stilbenoids include resveratrol, pterostilbene and piceatannol. Resveratrol includes, but is not limited to, 3,5,4'-trihydroxystilbene, 3,4,3',5'-tetrahydroxystilbene (piceatannol), 2,3',4,5' -tetrahydroxystilbene (oxyresveratrol), 4,4'-dihydroxystilbene, and their alpha and beta glucoside, galactoside and mannoside derivatives.

The antioxidant can be a coumarin (a derivative of 2H-chromen-2-one). Coumarins include 4-hydroxycoumarin, umbelliferone, askretin, herniarin, auraptene and dicoumarol.

The antioxidant may be a carotenoid. Carotenoids include β-carotene, α-carotene, γ-carotene, β-cryptoxanthin, lycopene, lutein and idebenone. Sesame seeds (Sesamum indicum) or sesame lignans may also be added. Sesame seeds and their lignans (fibrous compounds associated with sesame seeds) act as antioxidants. Sesame seed lignans significantly enhance vitamin E activity.

Antioxidants include xanthone, butylated hydroxytoluene, 2,6-di-tert-butylphenol, 2,4-dimethyl-6-tert-butylphenol, gallic acid, eugenol, uric acid, alpha-lipoic acid, ellagic acid, chicory. Acid, chlorogenic acid, rosmarinic acid, salicylic acid, acetylcysteine, S-allylcysteine, barbigerone, quebradic acid, edaravone, ethoxyquin, glutathione, hydroxytyrosol, idebenone, melatonin, N-acetylserotonin, nordihydroguaiaretic acid, oleo Canthal, oleuropein, paradol, piceatannol, probucol, propyl gallate, protocatechuic acid, pyritinol, rutin, secoisolaridiglycinol lucide, sesamin, sesamol, silibinin, silymarin, theaflavin, theaflavin digallate, tumoquinone, Trolox, tyrosol , polyunsaturated fatty acids, and sulfur-based antioxidants such as methionine or lipoic acid.

Optional Ingredients In one or more embodiments, the skin tightening compositions described herein may contain one or more additional ingredients (additives and miscellaneous ingredients). Examples include surfactants, emulsifiers, thickeners (such as polysaccharide thickeners), other polymers, proteins, hydrolyzed proteins, amino acids, fragrances, pH modifiers, and preservatives. Not limited to these. Further details regarding such additional ingredients follow below.

Skin tightening compositions according to the present disclosure can include any additional ingredients suitable for use in skin tightening compositions. Such ingredients include cosmetically acceptable solvents, silicone compounds, rheology modifiers such as acrylic polymers, cationic, nonionic, amphoteric or zwitterionic surfactants or mixtures thereof, anionic, cationic, nonionic, amphoteric or zwitterionic polymers or mixtures, humectants and moisturizing agents, fatty substances other than the claimed fatty substances, emulsifiers other than fatty substances, fillers, structuring agents, propellants, Brighteners, conditioning agents, antioxidants or reducing agents, penetrants, scavengers, fragrances, buffers, dispersants, conditioning agents, such as volatile or non-volatile, modified or unmodified silicones, ceramides, preservatives, opacities. These may include, but are not limited to, antistatic agents, sunscreens, and antistatic agents. Acids, such as citric acid, can affect the pH of the system and result in loss of lift.

Skin tightening compositions may also contain acid and alkaline pH adjusting agents well known in the art. Such pH adjusting agents include, but are not limited to, sodium metasilicate, silicate compounds, citric acid, ascorbic acid, and carbonate compounds.

Methods Skin tightening compositions are particularly useful for improving the appearance of skin, particularly human skin. When the skin tightening composition is applied to the skin, it provides a lasting and immediate improvement in the appearance of the skin. Skin tightening compositions are particularly useful in the following methods:
- reducing the appearance of fine lines on the skin;
- reducing the appearance of skin wrinkles;
- improving skin tone and/or improving skin tone uniformity;
- improving skin softness and/or smoothness;
- reducing the appearance of tear sacs;
- reducing the appearance of dark circles around and/or under the eyes;
- reducing the appearance of pores and/or scars; and/or - increasing the radiance, luminosity and/or shine of the skin.

Typically, an effective amount of the skin tightening composition is applied to the skin to be treated, such as the skin of the face and/or neck. In some cases, it may be desirable to apply a skin tightening composition to the skin around (or under) the eyes. The skin tightening composition can be applied by hand or using a brush, sponge, tissue, cotton swab, cloth, applicator (eg, pen or other device), or the like. The amount necessary to achieve the desired effect can be ascertained by the consumer.

Implementation of the present disclosure is provided by the following examples. The following examples serve to elucidate aspects of the technology without being limiting in nature.

In each of the following examples, the amounts of ingredients are in terms of active substance (AM).

Example 1
(Invention examples and comparative examples)
Exemplary (inventive and comparative) compositions were prepared according to embodiments of the present disclosure and are reported in Tables 2-4 below. Several prototypes of the composition were prepared on a laboratory scale using a speed mixer using the following protocol:
1. Hydrophilic film formers were mixed in water (containing magnesium sulfate for charge).
2. Preservatives, surfactants, and oil phase film former (dispersed in isododecane) were added to the aqueous film former solution/suspension from Step 1 in the same speed mixer cup.
a. The mixture was mixed for 3 minutes at 2500 rpm.
3. A volatile hydrocarbon oil (eg, isododecane) was added to the white emulsion from step 2.
a. Pigment (if present) was also added at this step.
b. The mixture was mixed for 3 minutes at 2500 rpm.
4. Silicone elastomer was added to the emulsion from step 3.
a. The mixture was mixed for 3 minutes at 2500 rpm.
5. Filler, thickener and soft focus powder were added to the emulsion from step 4.
a. The mixture was mixed for 3 minutes at 2500 rpm.

^１内部応力：材料が受ける内部張力。
^２クラッキング：部品を完全に分離することなく破断する。
^３クレージング：ポリマー膜が、引張時の伸張マークによって証明されるように、目に見えるクラッキングなしに、張力の解放後にその元の形態に完全に戻らない現象。これは、ポリマーがその弾性限界を超えて伸長し、したがって構造を可塑化するときに起こる。膜の弾性限界を超える伸張及び放出の反復サイクルは、クレージング及び最終的にはクラッキングの増強をもたらす。
^４折り目：線上に生成され、表面にしわがある。 Mechanical properties of the membrane were evaluated by applying the formula to a stretch fabric with a polyurethane coating at a volume of 10 mg/cm2. The films were allowed to dry for 3 hours before being evaluated and scored. An internal stress score was given for each membrane based on the level of curl obtained on the fabric upon drying of the membrane. The fabric with the dried membrane was uniaxially stretched in the direction of 25% of its original length. The level of cracking and/or crazing was then scored. Scores are based on the internal stress/curl, cracking and crazing scales in Table 1.
Table 1 Measures of internal stress/curl, cracking and crazing scores of formulated membranes on stretchable polyurethane coated fabrics

¹ Internal stress: Internal tension that a material is subjected to.
² Cracking: breaking parts without completely separating them.
³ Crazing: A phenomenon in which a polymer film does not fully return to its original form after tension release without visible cracking, as evidenced by stretch marks upon tension. This occurs when the polymer stretches beyond its elastic limit, thus plasticizing the structure. Repeated cycles of stretching and extrusion beyond the membrane's elastic limits result in enhanced crazing and ultimately cracking.
^4th fold: Generated along a line, with wrinkles on the surface.

Example 2
Examples with acrylate/isobornyl acrylate copolymers in the oil phase Hydrophilic membrane formation with different glass transition temperatures (Tg) in the aqueous phase with the same acrylate/isobornyl acrylate copolymers in the oil phase The mechanical properties of the inventive examples and comparative examples containing agents were evaluated using the method described above in Example 1. The results are shown in Table 2 below.
Table 2

The mechanical properties of the film were evaluated using the scale described in Table 1 above. Example A was considered the baseline as it did not contain a hydrophilic film forming agent. The Tg (i.e., glass transition temperature) of the hydrophilic film-forming agent added to the aqueous phase plays an important role in the final film robustness, while the film-forming agent in the oil phase is constant as acrylate/isobornyl acrylate. (Tg=27°C). Hydrophilic film formers with Tg<80°C were found to be the most promising in increasing the mechanical robustness of the film without compromising internal stresses. Film formers with Tg>80° C. can increase cracking and/or crazing at the expense of internal stresses that are important for tightening the film.

Example 3
Examples of containing acrylate/polytrimethylsiloxy methacrylate copolymers in the oil phase Hydrophilic membrane formation with different glass transition temperatures (Tg) in the aqueous phase with the same acrylate/polytrimethylsiloxy methacrylate copolymers in the oil phase The mechanical properties of the inventive examples and comparative examples containing agents were evaluated using the method described above in Example 1. The results are shown in Table 2.
Table 3

The mechanical properties of the film were evaluated using the scale described in Table 1 above. Example I was considered the baseline as it did not contain a hydrophilic film forming agent. An example was considered an invention if both cracking and crazing improvements were obtained. It is observed that the Tg of the hydrophilic film-forming agent added to the aqueous phase plays an important role in the final film robustness, while the film-forming agent in the oil phase is kept constant as acrylate/polytrimethylsiloxymethacrylate. (Tg=70°C). Hydrophilic film formers with Tg<80°C were found to be the most promising in increasing the mechanical robustness of the film without compromising internal stresses (i.e. both crazing and cracking were improved). For film formers with Tg between 80°C and 220°C, cracking was only slightly improved and there was no effect on craze. No improvement was observed for film formers with Tg above 220°C.

Example 4
Examples containing an acrylate/stearyl methacrylate copolymer in the oil phase Glass transition temperature (Tg) below 80°C (16-20°C) in the aqueous phase with the same acrylate/stearyl methacrylate copolymer in the oil phase The mechanical properties of comparative and inventive examples containing hydrophilic film-forming agents having the following properties were evaluated using the method described above in Example 1. The results are shown in Table 4.
Table 3

The composition of this example was prepared to confirm the reproducibility of the results seen in the evaluation of the compositions of Examples 2 and 3. For simplicity, one film former was selected that had a similar Tg to one of the oil phase film formers evaluated in the previous example. In this particular case, the film former used in the oil phase was an acrylate/stearyl methacrylate copolymer with a Tg = 26°C close to that of the acrylate/isobornyl acrylate copolymer (27°C). . The film forming agent in the aqueous phase was selected as a styrene/acrylate/ammonium methacrylate copolymer (Tg=16-20° C.). While the films of the comparative compositions exhibited significant cracking and crazing, the films of the compositions of the present invention exhibited significant cracking and crazing, whereas the films of the compositions of the present invention did not show significant cracking and crazing in the examples using compositions containing an acrylate/isobornyl acrylate copolymer film former in the oil phase. Similar to that seen with 2, it did not undergo cracking or crazing upon stretching.

The results showed that the mechanical properties of the compositions were influenced by the choice of hydrophilic film formers as well as the hydrophobic film formers. Specifically, in the examples presented in this disclosure, hydrophilic film formers with Tg less than about 80° C. show the most promise in increasing the mechanical robustness of the film without compromising internal stresses. It became clear. Film formers with Tg>80°C may reduce cracking and/or crazing in some cases at the expense of internal stresses that are important for tightening the membrane; therefore, the selection of hydrophilic film formers may Performance limits Tg to less than about 80°C.

The above discussion illustrates and describes the present disclosure. Further, while this disclosure has shown and described only preferred embodiments, it can be used in various other combinations, modifications, and environments, as described above, and may be based on the techniques of the above teachings and/or related art. It is to be understood that changes or modifications may be made within the scope of the inventive concept as expressed herein, or as the knowledge may suggest. The embodiments described herein above further describe the best mode known by the applicant and others skilled in the art will understand such or other embodiments and depending on the particular application or use thereof. It is intended to enable the present disclosure to be utilized with various modifications as may be necessary. Therefore, the description is not intended to limit the invention to the form disclosed herein. Additionally, it is intended that the appended claims be construed to include alternative embodiments.

The term "INCI" is an abbreviation for International Nomenclature of Cosmetic Ingredients, which is used by the Personal Care Products Council's International Nomenclature to describe personal care ingredients. A system of names provided by the lature committee.

As used herein, all ranges provided are meant to include all specified ranges within a given range and combinations of subranges therebetween. Accordingly, the range 1-5 specifically includes subranges 1, 2, 3, 4, and 5, as well as 2-5, 3-5, 2-3, 2-4, 1-4, and the like.

All components and elements positively described in this disclosure may be negatively excluded from the claims. In other words, the skin tightening compositions of the present disclosure may be free or essentially free of all ingredients and elements positively recited throughout this disclosure.

Some of the various categories of components identified may overlap. Overlap may exist, and if the composition includes both components (or the composition includes more than two components that overlap), the overlapping compounds do not represent more than one component. For example, fatty acids can be characterized as both nonionic surfactants and fatty compounds. If a particular composition contains both a nonionic surfactant and a fatty compound, the single fatty acid may function as the nonionic surfactant only or as the fatty compound only (the single fatty acid may function as the nonionic surfactant or only the fatty compound). does not function as both a surfactant and a fatty compound).

All publications and patent applications cited herein are incorporated by reference for all purposes as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference. Incorporated herein by reference. In the event of a conflict between this disclosure and any publication or patent application incorporated herein by reference, this disclosure will control.

As used herein, the terms "comprising," "having," and "including" are used in their open, non-limiting sense.

The terms "a," "an," and "the" are understood to include the plural and singular. Accordingly, the term "mixtures thereof" also relates to "mixtures thereof." Throughout this disclosure, the term "mixtures thereof" is used according to the list of elements shown in the example below, in which the letters AF represent the elements: "A, B, C, D, E, F and one or more elements selected from the group consisting of mixtures. The term "mixture thereof" does not require that the mixture include all of A, B, C, D, E, and F (but does not include all of A, B, C, D, E, and F). ). Rather, it indicates that mixtures of any two or more of A, B, C, D, E and F may be included. In other words, "one or more elements selected from the group consisting of A, B, C, D, E, F, and mixtures of any two or more of A, B, C, D, E, and F" It corresponds to the phrase.

The expression "one or more" means "at least one" and thus includes individual components as well as mixtures/combinations.

Except where indicated in the examples or otherwise, all numbers expressing amounts of ingredients and/or reaction conditions are referred to as "about" which in all cases means within +/-5% of the number indicated. may be modified by the term.

As used herein, the term "treating" (and grammatical variations thereof) refers to the application of the compositions of the present disclosure to the surface of the skin, particularly keratinous substrates such as the skin of the head, face, and neck. .

As used herein, the terms "substantially free" or "essentially free" refer to less than about 2% by weight of a particular material added to the composition, based on the total weight of the composition. It means that. Nevertheless, the composition is about 1 wt. %, about 0.5 wt. less than 0.1%, about 0.1wt. It may contain less than % or none of the specified materials. All of the components described herein may be optionally included or excluded in the composition/method/kit. If excluded, the composition/method/kit may be free or essentially free of the component. For example, certain compositions may be free or essentially free of alkoxylated compounds, such as ethoxylated thickeners and/or ethoxylated surfactants. Similarly, certain compositions may be free or essentially free of sulfates, such as sulfate surfactants.

The terms "film-forming polymer," "film-forming agent," and "film-forming agent" are used interchangeably.

Claims (16)

A skin tightening composition, comprising:
A) Oil phase containing:
a) At least 5 wt. % of one or more hydrophobic film-forming polymers;
b) about 1 to about 40 wt. % of one or more thickeners;
c) about 30 to about 85 wt. % of one or more volatile hydrocarbon oils;
B) an aqueous phase comprising:
a) About 5 to about 40 wt. %water;
b) at least 2 wt. with a Tg of less than about 80°C. % of one or more hydrophilic film-forming agents;
including;
A skin tightening composition in which all weight percentages are based on the total weight of the skin tightening composition. The one or more hydrophobic film-forming polymers include trimethylsiloxysilicate, acrylate/isobornyl acrylate copolymer, acrylic acid/isobutyl acrylate/isobornyl acrylate copolymer, acrylate/stearyl methacrylate copolymer, acrylate/polymer Trimethylsiloxymethacrylate copolymer, C30-45 alkyldimethylsilylpolypropylsilsesquixane, trimethylsilsesquixane, polypropylsilsesquixane lypropylsilsesquixane), acrylate/dimethicone copolymer, octylacrylamide/acrylate/ Butylaminoethyl methacrylate copolymer, VA/butyl maleate/isobornyl acrylate copolymer, acrylate/t-butylacrylamide copolymer, polyvinylpyrrolidone/vinyl acetate copolymer, triacontanyl PVP copolymer, acrylate 2. A skin tightening composition according to claim 1, selected from /dimethylaminoethyl methacrylate copolymer, norbornene/tris(trimethylsiloxy)silylnorbornene copolymer, styrene/butadiene copolymer and mixtures thereof. The one or more thickeners include polyamide-8, hydrogenated styrene/isoprene copolymer, nylon-611/dimethicone copolymer, dimethicone/vinyl dimethicone crosspolymer, dimethicone crosspolymer, VP/eicosene copolymer, silicone Elastomer, emulsified silicone elastomer, fumed silica, hydrophobically modified silica, silica silylate, zeolite, natural clay, synthetic clay, kaolin, hectorite, organically modified hectorite, pentaerythrityl tetraisostearate (and) disteardi selected from monium hectorite (and) propylene carbonate, activated clay, disteardimonium hectorite, stearalkonium hectorite, quaternium-18 bentonite, quaternium-18 hectorite, benzalkonium bentonite, clay and mixtures thereof. The skin tightening composition according to claim 1 or claim 2. Skin tightening according to any one of claims 1 to 3, wherein the one or more volatile hydrocarbon oils are selected from isoparaffins, isohexadecane, isododecane, isodecane, undecane, tridecane, dodecane, and mixtures thereof. Composition. 5. Any one of claims 1 to 4, wherein the one or more hydrophilic film formers having a Tg of less than about 80°C are selected from polyurethanes, hydrophilic acrylate copolymers, polyvinyl alcohols and mixtures thereof. The skin tightening composition described. The one or more hydrophilic film-forming agents are present in an amount of about 2 wt.% based on the total weight of the skin tightening composition. % to about 45wt. 6. A skin tightening composition according to any one of claims 1 to 5, wherein the skin tightening composition is present in %. 7. A skin tightening composition according to any one of claims 1 to 6, further comprising one or more inorganic pigments. One or more inorganic pigments include titanium dioxide, zirconium oxide, cerium oxide, zinc oxide, iron oxide, titanium dioxide-coated mica, iron oxide-coated mica, titanium dioxide-coated alumina, iron oxide-coated alumina, aluminum hydroxide, chromium oxide, 8. According to any one of claims 1 to 7, selected from manganese violet, ultramarine, chromium hydrate, navy blue, aluminum powder, copper powder, silver powder, gold powder, barium sulfate, carbon black, and mixtures thereof. The skin tightening composition described. from about 0.1 to about 20 wt. based on the total weight of the skin tightening composition. 9. A skin tightening composition according to any one of claims 1 to 8, further comprising % of a non-volatile fatty compound. Claims 1 to 9, wherein the one or more non-volatile fatty compounds are selected from polyolefins, waxes, squalane, squalene, hydrogenated polyisobutenes, hydrogenated polydecenes, polybutenes, mineral oils, pentahydrosqualene, dimethicone, and mixtures thereof. The skin tightening composition according to any one of . 2. The skin tightening composition of claim 1, further comprising a nonionic surfactant. 12. A skin tightening composition according to any one of claims 1 to 11, further comprising a filler. 13. A skin tightening composition according to any one of claims 1 to 12, further comprising one or more active compounds. A skin tightening composition, comprising:
A) Oil phase containing:
a) At least 5 wt. % of one or more hydrophobic film-forming polymers;
b) about 1 to about 40 wt. % of one or more thickeners;
c) from about 30 to about 85 wt. selected from isoparaffins, isohexadecane, isododecane, isodecane, undecane, tridecane, dodecane, and mixtures thereof. % of one or more volatile hydrocarbon oils;
B) an aqueous phase comprising:
a) About 5 to about 40 wt. %Water of;
b) at least 2 wt. with a Tg less than 80°C. % of one or more hydrophilic film-forming agents;
including;
A skin tightening composition in which all weight percentages are based on the total weight of the skin tightening composition. A method of improving the appearance of skin comprising applying to the skin a skin tightening composition according to claim 1. 16. The method of claim 15, wherein the method for improving skin appearance comprises:
- reducing the appearance of fine lines on the skin;
- reducing the appearance of skin wrinkles;
- improving skin tone and/or improving skin tone uniformity;
- improving skin softness and/or smoothness;
- reducing the appearance of tear sacs;
- reducing the appearance of dark circles around and/or under the eyes;
- reducing the appearance of pores and/or scars; and/or - increasing skin radiance, luminosity, and/or shine.

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