RU2773152C2 - Sunscreen compositions with light consistency - Google Patents

Abstract

FIELD: cosmetology.

SUBSTANCE: invention relates to the field of sunscreens and cosmetics. The proposed sunscreen composition contains: (a) at least 10 wt.% of one or more UV filters; (b) from 0.55 to 1 wt.% of hydrophobically modified polyurethane; (c) from 0.1 to 0.3 wt.% of viscosity-increasing polymer, where viscosity-increasing polymer is acrylate cross-polymer; and (d) at least 0.1 wt.% of glyceryl stearate.

EFFECT: this composition has light, watery, pleasant consistency, while providing excellent protection against UV radiation.

7 cl, 3 tbl, 4 ex

Description

This application continues in part US Patent Application 15/648494, filed July 13, 2017, the full disclosure of which is hereby incorporated by reference herein for all purposes.

Prerequisites for the creation of the invention

It is well known that prolonged exposure to ultraviolet radiation, such as from the sun, can lead to the formation of radiation-related dermatoses and erythema and increase the risk of skin cancers such as melanoma. Exposure to UV radiation also accelerates the aging process of the skin, such as loss of skin elasticity and the formation of wrinkles.

Because of this, sun protection compositions are commonly used for sun protection, and a variety of sun protection compositions are commercially available. Unfortunately, most of them have a heavy, oily consistency because high oil content is required to incorporate the UV filters needed to provide an acceptable sun protection factor (SPF). A heavy oily feel can be unpleasant and may discourage users from applying enough product to provide good sun protection. Thus, it would be desirable to provide a sunscreen composition having both an excellent SPF and a light, watery, pleasant texture.

It has now been found that a topical moisture releasing sunscreen composition can be formulated using a combination of a hydrophobically modified polyurethane viscosity increasing polymer selected from the group consisting of taurate copolymers and acrylate crosspolymers and glyceryl stearate.

Statement of the Invention

The present invention provides a sunscreen composition comprising: (a) at least about 10% by weight of one or more UV filters; (b) from about 0.55 to about 1 wt.% hydrophobically modified polyurethane; (c) about 0.1% to about 0.6% by weight of a viscosity increasing polymer selected from the group consisting of taurate copolymers and acrylate crosspolymers; and (d) at least about 0.1% by weight of glyceryl stearate.

The invention further provides a sunscreen composition comprising at least about 10% by weight of one or more UV filters and having a linear complex viscosity of 1500 to 5000 cps at 100 rad/s.

The invention also provides a sunscreen composition comprising:

(a) at least about 10% by weight of a UV filter combination comprising avobenzone, octocrylene, homosalate, and octisalate;

(b) from about 0.55 to about 0.75 wt.% hydrophobically modified polyurethane;

(c) from about 0.4 to about 0.6 wt.% taurate copolymer; and

(d) at least about 0.1% by weight of glyceryl stearate;

(e) silica;

(f) a humectant selected from the group consisting of glycerol, pentylene glycol and mixtures thereof; and

(g) ethanol.

Finally, the present invention provides a sunscreen composition comprising:

(a) at least about 10% by weight of a UV filter combination comprising avobenzone, octocrylene, homosalate, and a triazone derivative;

(b) from about 0.5 to about 1 wt.% hydrophobically modified polyurethane;

(c) from about 0.1 to about 0.3 wt.% acrylate crosspolymer;

(d) at least about 0.1% by weight of glyceryl stearate;

(e) silica;

(f) a humectant selected from the group consisting of glycerol, propylene glycol and mixtures thereof; and

(g) ethanol.

Detailed description of the invention

Unless otherwise indicated, all technical and scientific terms used herein have the common meaning understood by any person of ordinary skill in the art to which the invention pertains. All publications, patent applications, patents and other references mentioned in this document are incorporated herein by reference.

As used herein, the term "topical application" refers to direct application or spread over the outer surface of the skin or scalp, for example, by hand or with an applicator such as a tissue, roller or spray.

As used herein, the term "cosmetic" refers to an appearance-enhancing substance or preparation that maintains, restores, imparts, mimics or enhances physical attractiveness or has an attractive or youthful effect, especially in relation to the appearance of tissue or skin.

As used herein, the term "cosmetically effective amount" means an amount of a physiologically active compound or composition sufficient to treat one or more conditions, but low enough not to cause serious side effects. The cosmetically effective amount of a compound or composition will vary depending on the condition being treated, the age and physical condition of the end user, the severity of the condition being treated/prevented, the duration of treatment, the nature of other treatment options, the compound or product/composition used, the particular cosmetically acceptable used carrier and similar factors.

As used herein, the term "cosmetically acceptable" means that the ingredients that the term describes are acceptable for use in contact with tissues (e.g., skin) without causing undesirable toxic effects, incompatibility, instability, irritation, allergic reaction. etc.

As used herein, the term "cosmetically acceptable active agent" means a composition (synthetic or natural) that has a cosmetic or therapeutic effect on the skin.

As used herein, the term "treatment or therapy" refers to the reduction, amelioration, prevention, improvement, or elimination of the symptoms of a condition or disorder.

As used herein, the term "phase-stable" means that the water and oil phases of the emulsion do not separate perceptibly from each other at room temperature for at least two weeks.

Unless otherwise indicated, a percentage or concentration is indicated as a percentage or concentration by weight (i.e., % w/w). Unless otherwise noted, all ranges are subject to limit values, for example, the range "4 to 9" includes limits 4 and 9.

UV FILTER

The sunscreen composition contains at least about 10% by weight of one or more UV filters. In one embodiment, the composition contains at least about 15% to about 35% by weight of one or more UV filters.

As used herein, the term "UV filter" refers to a material or compound, polymeric or non-polymeric, that absorbs, scatters or reflects radiation in a specified portion of the ultraviolet spectrum (290 nm to 400 nm), such as a material having an absorption coefficient of at least about 1000 mol-1 cm-1, at least one wavelength within the ultraviolet spectrum. The SPF values described and claimed herein are determined using the in vitro method described herein below.

The UV filters may be "organic" UV filters. "Organic" UV filters, often referred to as "monomeric organic UV absorbers", are essentially aromatic compounds linked to a carbonyl functional group introduced as a substituent at the ortho or para positions of the aromatic ring.

Traditional organic UV filters are aromatic small molecules with molecular weight values < 900 g/mol. Examples of "organic" non-polymeric UV filters include, without limitation: methoxycinnamate derivatives such as octylmethoxycinnamate and isoamylmethoxycinnamate; camphor derivatives such as 4-methylbenzylidene camphor, benzalkonium camphor methosulfate, ecamsul (Mexoryl® SX); terephthalilidene dicamphor sulfonic acid and terephthalilidene dicamphor sulfonic acid; salicylate derivatives such as octyl salicylate, trolamine salicylate, ethylhexyl salicylate and homosalate; sulfonic acid derivatives such as phenylbenzimidazole sulfonic acid; benzone derivatives such as dioxybenzone, sulisobenzone and oxybenzone; benzoic acid derivatives such as aminobenzoic acid and octyldimethyl para-aminobenzoic acid; octocrylene and other β,β-diphenylacrylates; dioctylbutamidotriazone; octyltriazone; avobenzone (butylmethoxybenzoylmethane); drometrisoltrisiloxane; menthyl anthranilate; triazone derivatives such as ethylhexyltriazone (Uvinul® T150); diethylhexylbutamidotriazone (UVAsorb® HEB); bis-ethylhexyloxyphenolmethoxyphenyl triazine (Tinosorb® S), benzoate derivatives such as diethylaminohydroxybenzoylhexyl benzoate (Uvinul® A Plus), benzotriazo derivatives such as drometrisoltrisiloxane (Mexoryl® XL), methylene bis-benzotriazolyl tetramethylbutylphenol; tris-biphenyltriazine; (2-{4-[2-(4-diethylamino-2-hydroxy-benzoyl)-benzoyl]-piperazine-1-carbonyl}-phenyl)-(4-diethylamino-2-hydroxy-phenyl)-methanone; merocyanine derivatives; bis(butylbenzoate)diaminotriazineaminopropylsiloxane; and bis-ethylhexyloxyphenolmethoxyphenyltriazine encapsulated in a polymeric matrix.

In certain embodiments of the invention, the sunscreen composition contains one or more UV filters selected from Table 1.

Table 1

UV filter Other names Coverage Benzophenone-3 Oxybenzone or 2-hydroxy-4-methoxybenzophenone UVA/B Benzophenone-4 Sulisobenzone or 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and its trihydrate UVA/B Benzophenone-5 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid (benzophenone-5) and its sodium salt
Sulisobenzone sodium
Sodium Hydroxymethoxybenzophenonesulfonate UVA/B Benzophenone-8 Dioxybenzone or 2,2'-dihydroxy-4-methoxybenzophenone
dioxybenzone
(2-hydroxy-4-methoxyphenyl)(2-hydroxyphenyl)methanone
methanone, (2-hydroxy-4-methoxyphenyl)(2-hydroxyphenyl) UVA/B 3-benzylidene camphor 3-benzylidene camphor UVB Bis-ethylhexyloxyphenol-methoxyphenyltriazine Tinosorb S or (1,3,5)-triazine-2,4-bis{[4-(2-ethyl-hexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl) or anisotriazine UVA/B Butylmethoxydibenzoylmethane Avobenzone or 1-(4-tert-butylphenyl)-3-(4-methoxyphenyl) propane-1,3-dione UVA camphor benzalkonium
Methosulfate Mexoryl SO or N,N,N-trimethyl-4-(2-oxborne-3-ylidene-methyl)anilinium methyl sulfate UVB Hexyl benzoate
diethylamino-hydroxybenzoyl Uvinul A plus or
benzoic acid, 2-[-4-(diethylamino)-2-hydroxybenzoyl]-, hexyl ester UVA Diethylhexylbutamide-triazone UVASorb HEB or
benzoic acid, 4,4-((6-((4-(((1,1-dimethylethyl)amino)carbonyl)phenyl)amino)1,3,5-triazine-2,4-diyl)diimino)bis- (2-)ester)
or dioctylbutamidotriazone UVB Tetrasulfonate
disodium phenyldibenzimidazole Neo Heliopan AP or
2-2'-bis(1,4-phenylene)1H-benzimidazole-4,6-disulfonic acid monosodium salt) or
bis-imidazylate UVA Drometrizole trisiloxane Mexoryl XL or
phenol,2-(2H-benzotriazol-2-yl)-4-methyl-6-(2-methyl-3-(1,3,3,3-tetramethyl-I-(trimethylsilyl)oxy)-disiloxanyl)propyl) UVA/B Ethoxyethyl methoxycinnamate cinoxat UVB Ethylhexyl-dimethylamino
Benzoate Padimat O
Octyldimethyl PABA
Ethylhexyldimethyl PABA UVB Ethylhexyl methoxycinnamate OMC or octinoxate
Octylmethoxycinnamate UVB Ethylhexyl salicylate Octisalate
2-ethylhexyl salicylate
Octyl salicylate UVB Ethylhexyltriazone Uvinul T150
2,4,6-trianilino-(p-carbo-2'-ethylhexyl-l'oxy)-1,3,5-triazine
Octyltriazone UVB Homosalat 3,3,5-trimethylcyclohexyl 2-hydroxybenzoate
Homomentyl salicylate UVB Isoamyl p-methoxycinnamate Amiloxate
Isopentyl-4-methoxycinnamate UVB Methyl anthranilate Meradimat UVA 4-methylbenzylidene camphor Enzakamen
3-(4'-methylbenzylidene)d-1-camphor
4 MBCs UVB Methylene-bis-benzotriazolyl-
tetramethylbutylphenol Tinosorb M
2,2'-methylene-bis-6-(2H-benzotriazol-2-yl)-4-(tetramethylbutyl)-1,1,3,3-phenol UVA/B Octocrylene 2-cyano-3,3-diphenylacrylic acid, 2-ethylhexyl ester UVB Para-aminobenzoic acid PABA
4-aminobenzoic acid UVB PEG-25 PABA Ethoxylated ethyl 4-aminobenzoate UVB Phenylbenzimidazole
sulfonic acid Neo Heliopan Hydro - insulizol
2-phenylbenzimidazole-5-sulfonic acid and its potassium, sodium and triethanolamine salts
Phenylbenzimidazolesulfonate potassium, sodium and TEA UVB Polyacrylamido-methylbenzylidene
Camphor Mexoryl SW
N-[(2 and 4)-[(2-oxborne-3-ylidene)methyl]benzyl]acrylamide polymer UVB Polysilicon-15 Parsol SLX
Diethylbenzylidenemalonate dimethicone
Diethylmalonylbenzylideneoxypropene dimethicone
Dimethicodiethylbenzalmalonate UVB Triethanolamine salicylate Neo Heliopan TES
Trolamine salicylate UVB Terephthalidendi- camphor
sulfonic acid Mexoryl SX UVA Benzylidene camphor sulfonic acid Alpha-(2-oxborne-3-ylidene)-toluene-4-sulfonic acid and its salts Titanium dioxide UVA/B zinc oxide UVA/B

In an alternative embodiment, the organic UV filter may be a polymer made from organic chromophores linked to a polysiloxane chain having, for example, an average molecular weight >6000 daltons. Examples of such polysiloxane compounds include, without limitation, Parsol® SLX and polysilicone-15. Such polysiloxanes absorb in the UVB (λmax=312 nm) portion of the spectrum and are generally combined with UVA filters to achieve broad spectrum protection.

In an alternative embodiment, the UV filter may be a UV blocker. UV blockers reflect, absorb, or scatter UV radiation and, when present in sunscreen compositions, can reflect all rays in the ultraviolet, visible, and infrared regions of the spectrum, thereby improving sun protection. UV blockers are typically inorganic metal oxides, including titanium dioxide, zinc oxide, and certain other transition metal oxides. Such UV blockers typically are solid particles in micronized or nanosized forms with a diameter of from about 0.01 microns to about 10 microns.

In one embodiment of the present invention, the sunscreen composition contains avobenzone.

In another embodiment, the sunscreen composition contains a combination of UV filters containing avobenzone, octocrylene and homosalate.

In another embodiment, the sunscreen composition comprises a combination of UV filters containing avobenzone, octocrylene, homosalate and octisalate.

In a further embodiment, the sunscreen composition comprises a UV filter combination comprising avobenzone, octocrylene, homosalate, and a triazone derivative. For example, the triazone derivative may be bis-ethylhexyloxyphenolmethoxyphenyltriazine.

The SPF of a sunscreen composition can be determined using the US FDA No. 1978-N-0018 "Final Rule" method known to those skilled in the art of sunscreens. In one embodiment, the sunscreen composition has an SPF of at least about 15. In another embodiment, the sunscreen composition has an SPF of at least about 25.

The total amount of UV filters in the sunscreen composition is at least about 10% by weight. In one embodiment, the total amount of UV filters in the sunscreen composition is at least about 15% by weight.

HYDROPHOBLY MODIFIED POLYURETHANE

The sunscreen composition also contains from about 0.55% to about 1% by weight of a hydrophobically modified polyurethane. For example, the composition may contain from about 0.55 to about 0.75 wt.% hydrophobically modified polyurethane.

In one embodiment, the hydrophobically modified polyurethane is polyurethane-62. Polyurethane-62 is commercially available as AVALURE™ Flex 6 polymer, a solution of polyurethane-62 in Tridecet-6, available from Lubrizol Advanced Materials, Inc., Cleveland, Ohio, USA.

VISCOSITY INCREASING POLYMER

The composition also contains one or more viscosity increasing polymers. In one embodiment, the viscosity increasing polymer is selected from the group consisting of taurate copolymers and acrylate crosspolymers. In addition, mixtures of the above two substances can be used.

In one embodiment, the viscosity increasing polymer comprises a taurate copolymer. The composition may contain from about 0.4 to about 0.6 wt.% taurate copolymer.

In one embodiment, the taurate copolymer is an acryloyldimethyltaurate/vinylpyrrolidine crosspolymer.

In one embodiment, the taurate copolymer is a sodium acryloyldimethyl taurate/vinylpyrrolidine crosspolymer. Sodium acryloyldimethyltaurate/vinylpyrrolidine crosspolymer is commercially available, for example under the name ARISTOFLEX® AVS from Clariant.

In an alternative embodiment, the viscosity increasing polymer may comprise an acrylate copolymer. The composition may contain from about 0.1 to about 0.3 wt.% acrylate crosspolymer.

In one embodiment, the acrylate crosspolymer is an acrylates/C10-30 alkyl acrylate crosspolymer. A commercial acrylates/C10 30 alkyl acrylate crosspolymer is, for example, PEMULEN™ TR-1 sold by Lubrizol Corporation.

GLYCERIL STEARATE

The composition further comprises at least about 0.1% by weight of glyceryl stearate. In one embodiment, the composition contains at least about 0.3 wt.% glyceryl stearate.

Glyceryl stearate is a well-known emulsifier. It is commercially available, for example, under the trade name Cutina® GMS V from BASF.

COMPOSITION FOR TOPICAL APPLICATION

The sunscreen composition can be used for topical application in mammals, for example, by direct application, rubbing or distribution of the composition on the skin, hair or nails of mammals, in particular humans.

The sunscreen composition is in the form of an oil-in-water emulsion containing a continuous aqueous phase and a discrete oil phase dispersed in the continuous aqueous phase.

The sunscreen composition can be prepared using mixing and combining techniques well known to those skilled in the art of sunscreens and cosmetics. In one embodiment, the sunscreen composition is prepared by preparing an oil phase by mixing UV filters with optional oil-soluble or oil-miscible ingredients; and obtaining an aqueous phase by mixing water with optional water-soluble or water-miscible ingredients. Subsequently, the oil phase and the water phase can be mixed to provide a substantially homogeneous dispersion of the oil phase in the water phase such that the water phase is a continuous medium and the oil phase is a discrete medium.

In certain embodiments, the oil-in-water emulsion is phase stable.

In certain embodiments, the implementation of the UV filter is dissolved and not dispersed, or distributed as suspended solids in the oil phase. Suitable solvents for UV filters include dicaprylyl carbonate, commercially available under the brand name CETIOL CC from Cognis Corporation, Ambler, Pennsylvania, USA.

The oil phase may be such that it is in the form of discrete droplets or blocks having an average diameter of from about one micron to about 1000 microns, for example from about 1 micron to about 100 microns.

The weight percentage of the aqueous phase included in the compositions may vary from about 45% to about 90%, for example from about 55% to about 80%, for example from about 60% to about 80%. The weight percentage of water in the aqueous phase may be about 90% or more, such as about 95% or more.

In certain embodiments, the weight percentage of the oil phase in the composition is from about 10% to about 55%, such as from about 20% to about 45%, such as from about 20% to about 40%.

In a certain embodiment, the oil phase consists essentially of a UV filter. In certain embodiments, the oil phase contains about 60 wt.% or more UV filter, for example, more than 75 wt.% UV filter, for example, more than 90 wt.% UV filter, for example, more than 97 wt.% UV filter, for example, more than 99 wt.% UV filter.

The composition may be combined with a "cosmetically acceptable topical carrier", i.e., a topical carrier capable of containing other ingredients dispersed or dissolved therein, as well as having acceptable properties that make it safe for topical application.

The composition may optionally contain a wide range of additional fat-soluble materials and/or water-soluble materials conventionally used in compositions for use in skin care at concentrations known to those skilled in the art. For example, surfactants, perlescent agents or opacifiers, thickeners, emollients, conditioners, humectants, chelating agents, scrubs, and additives that enhance the look, feel, and fragrance of the cleansing composition, such as coloring agents, fragrances, preservatives, pH regulators, etc.

Water-soluble or water-dispersible polymers can be added to the compositions. Water-dispersible polymers are made from a water-insoluble polymer that is typically finely ground and dispersed in an aqueous vehicle, optionally using a surface-active dispersing agent. The water-dispersible polymers are designed to form a film and improve the water resistance of the compositions. Examples of water soluble polymers include Polyaldo® 10-1-L (polyglyceryl-10-laurate) available from Lonza. Examples of water-dispersible polymers include water-dispersible polyurethanes such as Baycusan® C1000 (polyurethane-34) available from Bayer, Dow Corning® 2501 (bis-PEG-18 dimethylsilane methyl ether) available from Dow Corning, Eastman AQTM 38S (polyester-5) available from Eastman Chemical and Intelimer® 8600 (C8-22 cross-linked polymer of alkyl acrylates/methacrylic acid) available from Air Products.

The sunscreen composition may also contain a film former. Film formers are typically hydrophobic materials that impart film-forming and/or water-repellent characteristics. One such agent is polyethylene, which is available from New Phase Technologies under the name Performalene® 400 and is a 400 molecular weight polyethylene. Another suitable film former is polyethylene 2000 (molecular weight 2000) available from New Phase Technologies called Performalene®. Another suitable film former is a synthetic wax, also available from New Phase Technologies under the name Performa® V-825. Other exemplary film formers include acrylates/acrylamide copolymer, acrylates copolymer, acrylates/C12-C22 alkyl methacrylate copolymer, polyethylene, waxes, vinyl pyridine/dimethiconyl acrylate/polycarbamyl polyglycol ester, butylated polyvinylpyrrolidone (PVP), PVP/hexadecene copolymer, octadecene/methacrylate copolymer, PVP copolymer /eicosene, PVP tricontanyl, Brassica Campestris/Aleuritis Fordi oil copolymer, decamethylcyclopentasiloxane (and) trimethylsiloxysilicate, dimethicone; acrylate/dimethicone copolymer; and mixtures thereof. In some cases, the film former is an acrylates/C12-C22 alkyl methacrylate copolymer available under the trade name Allianz™ OPT from Ashland.

Suitable emollients include mineral oils, petroleum jelly, vegetable oils (e.g., triglycerides such as caprylic/capric acid triglyceride), waxes, and other mixtures of fatty esters, including, but not limited to, glycerol esters (e.g., isopropyl palmitate, isopropyl myristate, diisopropyl adipate, dicapryl carbonate) and silicone oils such as dimethicone. In certain embodiments, mixtures of triglycerides (eg, caprylic/capric acid triglycerides) and glycol esters (eg, isopropyl myristate) can be used to solubilize UV filters. In other embodiments of the invention, the compositions contain essentially no or no emollients.

Examples of suitable solvents include propylene glycol, polyethylene glycol, polypropylene glycol, glycerol, 1,2,4-butanetriol, sorbitan esters, 1,2,6-hexanetriol, ethanol, and mixtures thereof. In one embodiment, the sunscreen composition contains ethanol.

In certain embodiments, the composition includes a pigment suitable for providing color or hiding power. The pigment may be among those suitable for use in color cosmetic products, including compositions for application to the hair, nails and/or skin, especially the face. Colored cosmetic compositions include, but are not limited to, foundations, concealers, primers, blush, mascaras and brows, eyeshadow, eyeliner, lipstick, nail polish, and tinted moisturizers. The pigment suitable for providing color or hiding power may be comprised of iron oxides, including red and yellow iron oxides, titanium dioxide, ultramarine, and chromium or chromium hydroxide dyes, as well as mixtures thereof. The pigment may be a color pigment, such as an organic dye such as an azo dye, an indigo dye, triphenylmethane, anthraquinone and xanthine dyes, which are referred to as D&C and FD&C blue, brown, green, orange, red, yellow, and the like, deposited on inert binders such as insoluble salts. Examples of color pigments include Red No. 6, Red No. 7, Yellow No. 5, Purple No. 2, and Blue No. 1. The pigment may be an interfering pigment. Examples of interfering pigments include pigments containing mica substrates, bismuth oxychloride substrates, and silica substrates, such as mica/bismuth oxychloride/iron oxide pigments, pigments commercially available under the trademark CHROMALITE (BASF), dioxide pigments. titanium and/or iron oxides deposited on mica, such as commercially available FLAMENCO pigments (BASF), mica/titanium dioxide/iron oxide based pigments including commercially available KTZ pigments (Kobo products), CELLINI pearlescent pigments (BASF) and borosilicate-containing pigments such as REFLECKS pigments (BASF).

In certain embodiments, the implementation of the sunscreen composition may include one or more compounds suitable for increasing the photostability of UV filters and other ingredients in the composition. Photostabilizers include, for example, diesters or polyesters of naphthalenedicarboxylic acid.

In one embodiment, the sunscreen composition includes a humectant. Examples of humectants include, without limitation, glycerin, pentylene glycol, butylene glycol. In another embodiment, the sunscreen composition contains at least 3 wt.% glycerol. The sunscreen composition may contain, for example, at least about 2 wt.% or at least about 3.5 wt.% glycerol. The sunscreen composition may contain at least about 5 wt.% glycerin.

In one embodiment, the sunscreen composition contains a humectant selected from the group consisting of glycerol, pentylene glycol, and mixtures thereof.

In another embodiment, the sunscreen composition has a pH of about 5 to about 6. The sunscreen composition may have a pH of about 5.5.

In an additional embodiment, the sunscreen composition contains hyaluronic acid. In another embodiment, the sunscreen composition contains at least 0.01 wt.% hyaluronic acid.

The composition may contain one or more other cosmetically acceptable active agents, including, for example, acne treatment agents, gloss control agents, antimicrobial agents, anti-inflammatory agents, antifungal agents, antiparasitic agents, topical analgesics, sunscreens, photoprotectors, antioxidants. , keratolytic agents, surfactants, humectants, nutrients, vitamins, energy boosting agents, antiperspirant agents, astringents, deodorants, plumping agents, anti-corn agents, and skin conditioning agents.

The amount of the cosmetically active agent may range from about 0.001% to about 20% by weight of the composition, such as from about 0.005% to about 10% by weight of the composition, for example, from about 0.01% to about 5% by weight of the composition.

The cosmetically acceptable active agent may be selected from, for example, benzoyl peroxide, D-panthenol, carotenoids, ceramides, polyunsaturated fatty acids, essential fatty acids, enzymes such as laccase, enzyme inhibitors, minerals, hormones such as estrogens, steroids such as hydrocortisone, 2-dimethylaminoethanol, copper salts such as copper chloride, peptides such as argireline, Syn-ake and copper-containing peptides, coenzyme Q10, amino acids such as proline, vitamins, lactobionic acid, acetyl coenzyme A, niacin, riboflavin, thiamine, ribose, electron transporters such as NADH and FADH2, natural extracts such as aloe vera, feverfew, oats, dill, blackberry, paulownia tomentum, Picia anomala and chicory, resorcinols such as 4-hexylresorcinol, curcuminoids, amine sugars , such as N-acetylglucosamines, as well as their derivatives and mixtures.

Examples of vitamins include, without limitation, vitamin A, B vitamins such as vitamin B3, vitamin B5 and vitamin B12, vitamin C, vitamin K, and various forms of vitamin E such as alpha, beta, gamma, or delta tocopherols. or their mixtures, and their derivatives.

Examples of antioxidants include, without limitation, water-soluble antioxidants such as sulfhydryl compounds and their derivatives (e.g., sodium metabisulphite and N-acetylcysteine), lipoic acid and dihydrolipoic acid, resveratrol, lactoferrin, and ascorbic acid and ascorbic acid derivatives (e.g., ascorbyl palmitate). and ascorbyl polypeptide). Fat-soluble antioxidants suitable for use in the compositions of the present invention include butylated hydroxytoluene, retinoids (eg, retinol and retinyl palmitate), tocopherols (eg, tocopherol acetate), tocotrienols, and ubiquinone. Natural extracts containing antioxidants suitable for use in the compositions of the present invention include, without limitation, extracts containing flavonoids and isoflavonoids, as well as their derivatives (for example, genistein and diadzein), extracts containing resveratrol, and the like. Examples of such natural extracts include extracts of grape seed, green tea, pine bark and propolis.

METHOD FOR TESTING COMPLEX VISCOSITY

In one embodiment of the invention, the sunscreen composition has a linear complex viscosity |η*| from about 1500 to about 5000 cps at 100 rad/s. In another embodiment, the sunscreen composition has a linear complex viscosity of about 2000 to about 5000 centipoise at 100 rad/s. Sunscreen compositions having a linear complex viscosity in this range have been found to exhibit excellent skin spreadability, providing a slight watery feel when applied topically.

The linear complex viscosity (cP) of a sunscreen composition is measured using the "Complex Viscosity Test Method" described below.

A TA Instruments (New Castle, Delaware, USA) ARES G2 load-adjustable rheometer equipped with a Peltier element temperature control system at 25° C. and parallel plate geometry was used. The linear viscoelastic behavior of the sample was determined by performing a stretch cycle in which the stretch amplitude increases from 0.1% to 1000% at an angular frequency of one radian per second. The end of the linear viscoelastic regime was considered stretching, at which the dynamic elastic modulus G' deviates by more than 5% from the average plateau value at low stretching. To determine the dependence of the linear complex viscosity |η*| from frequency, a frequency cycle was performed by varying the angular frequency from 100 to 0.1 radians per second while stretching in a linear viscoelastic mode.

The following non-limiting examples further illustrate the invention.

Example 1

The following compositions 1-4 in accordance with the invention and comparative compositions A, B and C were prepared using the ingredients shown in the tables below.

Table for composition 1

Name according to INCI Function Weight (%) Disodium salt EDTA Chelating agent 0.1 Glyceryl stearate Emulsifier 0.3 Diisopropyl adipate Softener 2 Silica Skin conditioner 2 Dicapryl carbonate Softener 1.5 Sodium hydroxide pH regulator 0.008 flavoring flavoring 0.3 Aluminum starch octenyl succinate Skin conditioner 0.5 Hydrolyzed hyaluronic acid Humidifier 0.05 Water carrier medium 49.08106 Dimethicone; acrylates/dimethicone copolymer Film-forming agent 1.2 Sodium acryloyldimethyltaurate/vinylpyrrolidone (VP) crosspolymer viscosifying agent 0.4 Menthyl lactate Refreshing agent 0.14 Tridecet-6; polyurethane-62 emulsion stabilizer 0.75 caprylylmethicone Occlusal Skin Conditioner 3 Blue 1 Coloring matter 0.00044 Alcohol denat. Refreshing agent 3 tocopherol acetate Antioxidant 0.1 Homosalat sun protection agent 9 Oxybenzone sun protection agent 4.5 Octisalate sun protection agent 5 Avobenzone sun protection agent 2.7 Octocrylene sun protection agent 9 Glycerol Humidifier 3.5 Chlorphenesin preservative 0.27 Purple 2 Coloring matter 0.0005 Hydroxyacetophenone Antioxidant 0.5 Phenoxyethanol preservative 0.6 pentylene glycol Humidifier 0.5

Composition 1 was prepared as follows.

Premix 1. Added hyaluronic acid to 5% purified water and stirred with a magnetic stirrer for 1 hour at a temperature of 35 to 40°C.

water phase. The remaining purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Added chlorphenesin and hydroxyacetophenone with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: avobenzone, homosalate, octisalate, octocrylene, oxybenzone, caprylyl methicone, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate, acetate tocopherol, dimethicone; acrylates/dimethicone copolymer.

At 60°C, sodium acryloyldimethyltaurate/VP crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40°C, menthyl lactate, ethanol, violet #2, blue #1, pentylene glycol, flavor, silica, aluminum starch octenyl succinate and premix 1 were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for composition 2

Name according to INCI Function Weight (%) Water carrier medium 62.6717 Tridecet-6; polyurethane-62 emulsion stabilizer 0.6 Disodium salt EDTA Chelating agent 0.1 Glycerol Humidifier 5 Sodium acryloyldimethyltaurate/vinylpyrrolidone (VP) crosspolymer viscosifying agent 0.6 Hydrolyzed hyaluronic acid Humidifier 0.05 Chlorphenesin preservative 0.27 Hydroxyacetophenone Antioxidant 0.5 Homosalat sun protection agent 5 Octisalate sun protection agent four Octocrylene sun protection agent 6 Phenoxyethanol preservative 0.3 Dimethicone; dimethicone crosspolymer Skin conditioner one Diisopropyl adipate Softener 3.5 caprylylmethicone Occlusal Skin Conditioner 2 Dicapryl carbonate Softener one Avobenzone sun protection agent 1.5 Glyceryl stearate Emulsifier 0.3 tocopherol acetate Antioxidant 0.1 Dimethicone; acrylates/dimethicone copolymer Film former 1.2 Silica Skin conditioner 1.5 Alcohol denat. Refreshing agent 2 Blue 1 Coloring matter 0.0003 flavoring flavoring 0.3 pentylene glycol Humidifier 0.5 Sodium hydroxide pH regulator 0.008

Composition 2 was prepared as follows.

Premix 1. Added hyaluronic acid to 5% purified water and stirred with a magnetic stirrer for 1 hour at a temperature of 35 to 40°C.

water phase. The remaining purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Added chlorphenesin and hydroxyacetophenone with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: avobenzone, homosalate, octisalate, octocrylene, caprylyl methicone, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate, tocopherol acetate, dimethicone; acrylates/dimethicone copolymer, dimethicone; dimethicone crosspolymer.

At 60°C, sodium acryloyldimethyltaurate/VP crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C. blue #1, pentylene glycol, flavor, ethanol, silica and premix 1 were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for composition 3

Name according to INCI (USA) Function Wt% Water carrier medium 49.8697 Hydrolyzed hyaluronic acid Skin conditioner 0.05 Disodium EDTA Chelating agent 0.1 Glycerol Humidifier 3.5 Polyurethane-62; trideceth-6 emulsion stabilizer 0.7 Chlorphenesin preservative 0.27 Sodium acryloyldimethyltaurate/vinylpyrrolidone (VP) crosspolymer Viscosifying agent 0.4 tocopherol acetate Antioxidant 0.1 Dimethicone; acrylates/dimethicone copolymer Film-forming agent 1.2 Avobenzone sun protection agent 2.7 Homosalat sun protection agent 9 Oxybenzone sun protection agent 4.5 Octisalate sun protection agent 5 Octocrylene sun protection agent 9 caprylylmethicone Occlusal Skin Conditioner 3 Glyceryl stearate Emulsifier 0.3 Phenoxyethanol preservative 0.6 Dicapryl carbonate Softener 1.5 Diisopropyl adipate Softener 2 Aluminum starch octenyl succinate Skin conditioner 0.5 Silica Skin conditioner 2 Hydroxyacetophenone Antioxidant 0.5 Alcohol denat. Refreshing agent 3 Menthyl lactate Refreshing agent 0.14 Blue 1 Coloring matter 0.0003 flavoring flavoring 0.07

Composition 3 was prepared as follows.

Premix 1. Added hyaluronic acid to 5% purified water and stirred with a magnetic stirrer for 1 hour at a temperature of 35 to 40°C.

water phase. The remaining purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Chlorphenesin and hydroxyacetophenone were added with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: avobenzone, homosalate, octisalate, octocrylene, oxybenzone, caprylyl methicone, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate, acetate tocopherol, dimethicone; acrylates/dimethicone copolymer.

At 60°C, sodium acryloyldimethyltaurate/VP crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C., menthyl lactate, ethanol, blue #1, flavor, silica, aluminum starch octenyl succinate and premix 1 were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for composition 4

Name according to INCI (USA) Function Percentage Water carrier medium 63.399 Tridecet-6; polyurethane-62 emulsion stabilizer 0.60 Disodium salt EDTA Chelating agent 0.10 Glycerol Humidifier 5.00 Sodium acryloyldimethyltaurate/vinylpyrrolidone (VP) crosspolymer viscosifying agent 0.60 Hydrolyzed hyaluronic acid Skin conditioner 0.05 Chlorphenesin preservative 0.27 Hydroxyacetophenone Antioxidant 0.50 Homosalat sun protection agent 5.00 Octisalate sun protection agent 4.00 Octocrylene sun protection agent 6.00 Phenoxyethanol preservative 0.30 Dimethicone; dimethicone crosspolymer Skin conditioner 1.00 Diisopropyl adipate Softener 3.50 caprylylmethicone Occlusal Skin Conditioner 2.00 Dicapryl carbonate Softener 1.00 Avobenzone sun protection agent 1.50 Glyceryl stearate Emulsifier 0.30 tocopherol acetate Antioxidant 0.10 Dimethicone; acrylates/dimethicone copolymer Film former 1.20 Silica Skin conditioner 1.50 Alcohol denat. Refreshing agent 2.00 Blue 1 Coloring matter 0.0003 flavoring flavoring 0.07 Sodium hydroxide pH regulator 0.01

Composition 4 was prepared as follows.

Premix 1. Added hyaluronic acid to 5% purified water and stirred with a magnetic stirrer for 1 hour at a temperature of 35 to 40°C.

water phase. The remaining purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Chlorphenesin and hydroxyacetophenone were added with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: avobenzone, homosalate, octisalate, octocrylene, caprylyl methicone, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate, tocopherol acetate, dimethicone; acrylates/dimethicone copolymer, dimethicone; dimethicone crosspolymer.

At 60°C, sodium acryloyldimethyltaurate/VP crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40°C, blue #1, flavor, ethanol, silica and premix 1 were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for Comparative Composition A

Name according to INCI (USA) Function Weight (%) Water carrier medium 49.4897 Hydrolyzed hyaluronic acid Skin conditioner 0.05 Disodium salt EDTA Chelating agent 0.1 Glycerol Humidifier 3.5 Tridecet-6; polyurethane-62 emulsion stabilizer 0.85 Chlorphenesin preservative 0.27 Sodium acryloyldimethyltaurate/vinylpyrrolidone (VP) crosspolymer viscosifying agent 0.5 tocopherol acetate Skin conditioner 0.1 Dimethicone; acrylates/dimethicone copolymer Film former 1.2 Avobenzone sun protection agent 2.7 Homosalat sun protection agent 9 Oxybenzone sun protection agent 4.5 Octisalate sun protection agent 5 Octocrylene sun protection agent 9 caprylylmethicone Occlusal Skin Conditioner 3 Glyceryl stearate Emulsifier 0.3 Phenoxyethanol preservative 0.6 Dicapryl carbonate Softener 1.5 Diisopropyl adipate Softener 2 Aluminum starch octenyl succinate Skin conditioner 0.5 Silica Skin conditioner 2 Hydroxyacetophenone Antioxidant 0.5 Alcohol denat. Refreshing agent 3 Menthyl lactate Refreshing agent 0.14 Blue 1 Coloring matter 0.0003 flavoring flavoring 0.2

Comparative composition A was prepared as follows.

Premix 1. Added hyaluronic acid to 5% purified water and stirred with a magnetic stirrer for 1 hour at a temperature of 35 to 40°C.

water phase. The remaining purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Chlorphenesin and hydroxyacetophenone were added with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: avobenzone, homosalate, octisalate, octocrylene, oxybenzone, caprylyl methicone, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate, acetate tocopherol, dimethicone; acrylates/dimethicone copolymer.

At 60°C, sodium acryloyldimethyltaurate/VP crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40°C, blue #1, pentylene glycol, flavor, ethanol, silica, aluminum starch octenyl succinate, menthyl lactate and premix 1 were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for Comparative Composition B

Name according to INCI (USA) Function Weight (%) Water carrier medium 62.27 Tridecet-6; polyurethane-62 emulsion stabilizer 1.00 Disodium salt EDTA Chelating agent 0.10 Glycerol Humidifier 5.00 Sodium acryloyldimethyltaurate/vinylpyrrolidone (VP) crosspolymer viscosifying agent 0.60 Hydrolyzed hyaluronic acid Skin conditioner 0.05 Chlorphenesin preservative 0.27 Hydroxyacetophenone Antioxidant 0.50 Homosalat sun protection agent 5.00 Octisalate sun protection agent 4.00 Octocrylene sun protection agent 6.00 Phenoxyethanol preservative 0.30 Dimethicone; dimethicone crosspolymer Film former 1.00 Diisopropyl adipate Softener 3.50 caprylylmethicone Occlusal Skin Conditioner 2.00 Dicapryl carbonate Softener 1.00 Avobenzone sun protection agent 1.50 Glyceryl stearate Emulsifier 0.30 tocopherol acetate Skin conditioner 0.10 Dimethicone; acrylates/dimethicone copolymer Skin conditioner 1.20 Silica Skin conditioner 1.50 Alcohol denat. Refreshing agent 2.00 Blue 1 Coloring matter 0.00 flavoring flavoring 0.30 pentylene glycol Humidifier 0.50 Sodium hydroxide pH regulator 0.01

Comparative composition B was prepared as follows.

Premix 1. Added hyaluronic acid to 5% purified water and stirred with a magnetic stirrer for 1 hour at a temperature of 35 to 40°C.

water phase. The remaining purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Chlorphenesin and hydroxyacetophenone were added with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: avobenzone, homosalate, octisalate, octocrylene, caprylyl methicone, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate, tocopherol acetate, dimethicone; acrylates/dimethicone copolymer, dimethicone; dimethicone crosspolymer.

At 60°C, sodium acryloyldimethyltaurate/VP crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C. blue #1, pentylene glycol, flavor, ethanol, silica and premix 1 were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for comparative composition C

Name according to INCI (USA) Function Weight (%) Water carrier medium 64.96 Tridecet-6; polyurethane-62 emulsion stabilizer 0.6 Disodium salt EDTA Chelating agent 0.1 Glycerol Humidifier 5 Sodium acryloyldimethyltaurate/vinylpyrrolidone (VP) crosspolymer viscosifying agent 0.5 Chlorphenesin preservative 0.27 Homosalat sun protection agent 5 Octisalate sun protection agent four Octocrylene sun protection agent 6 Phenoxyethanol preservative 0.3 Diisopropyl adipate Softener 3.5 caprylylmethicone Softener 2 Dicapryl carbonate Skin conditioner one Avobenzone sun protection agent 1.5 Dimethicone; copolymer acrylates / dimethicone Film former 1.2 Silica Skin conditioner 1.5 Hydroxyacetophenone Antioxidant 0.5 Alcohol denat. Refreshing agent 2 flavoring flavoring 0.07

Comparative composition C was prepared as follows.

water phase. The remaining purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Chlorphenesin and hydroxyacetophenone were added with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to a target temperature of 75-80°C with stirring at 300 rpm: avobenzone, homosalate, octisalate, octocrylene, caprylyl methicone, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, dimethicone; acrylates/dimethicone copolymer.

At 60°C, sodium acryloyldimethyltaurate/VP crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C., flavor, ethanol and silica were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Comparative Composition C was not light enough in texture as expected to be included in the test. Visually estimated density was higher than intended.

EXAMPLE 2

The complex viscosity of compositions 1-4 and comparative compositions A and B were tested using the complex viscosity test method described above.

In addition, for each of these compositions, the organoleptic sensation on the skin was evaluated when rubbed using the following method. Using a cosmetic spatula on the back of the non-dominant hand, rubbed 0.10 grams of the composition (pea-sized) with five rotational movements of the fingers of the dominant hand and held for five minutes, after which a organoleptic evaluation was performed. The overall ease of application and the rate of drying were determined.

The results are shown in Table 2.

table 2

Test composition Linear complex viscosity
|η*| at 100 rad/s (cP) Organoleptic characteristics when rubbed Composition 1 2600 Easy application, watery feel Composition 2 2840 Easy application, watery feel Composition 3 3030 Easy application, watery feel Composition 4 2370 Easy application, watery feel Comparative composition A 5790 Difficult to apply, thick, not watery Comparative Composition B 1980 Difficult to apply due to excessive fluidity

Only compositions 1-4 containing a combination of from about 0.55 to about 0.75 wt.% hydrophobically modified polyurethane; from about 0.4 to about 0.6 wt.% taurate copolymer; and at least about 0.1% by weight of glyceryl stearate had linear complex viscosities of 2000-5000.

Accordingly, compositions 1-4 required little effort to apply, and provided a watery feel when rubbed, a fresh feel when applied, dried quickly, and left a matte and refreshing finish. On the contrary, Comparative Composition A required more effort to apply and also did not create a watery feel due to the thickness, while Comparative Composition B could not be easily and evenly applied due to excessive fluidity and took too long to apply and dry.

Example 3

The following compositions 5-8 according to the invention and comparative composition D were prepared using the ingredients shown in the tables below.

Table for composition 5

Name according to INCI Function Weight (%) Water carrier medium 61.29 Disodium salt EDTA Chelating agent 0.1 Glycerol Humidifier 3 Polyurethane-62; trideceth-6 viscosifying agent 0.8 Hydroxyacetophenone Antioxidant 0.5 Styrene/acrylate copolymer Opacifier 2.5 Cross-linked polymer acrylates/C10-30 alkyl acrylate viscosifying agent 0.2 Butylmethoxydibenzoylmethane sun protection agent 2.25 Homosalat sun protection agent eight Bis-ethylhexyloxyphenolmethoxyphenyltriazine sun protection agent 2 Glyceryl stearate Emulsifier 0.3 Octocrylene sun protection agent 6 caprylylmethicone Softener 2 Phenoxyethanol preservative 0.7 Dimethicone; acrylates/dimethicone copolymer Film-forming agent 1.2 Dicapryl carbonate Softener 1.5 Diisopropyl adipate Softener 2 tocopherol acetate Antioxidant 0.5 Sodium hydroxide pH regulator 0.11 Silica Skin conditioner 2 pentylene glycol Humidifier 0.5 flavoring flavoring 0.35 Menthyl lactate flavoring 0.2 Alcohol Solvent 2

Composition of the invention 5 was prepared as follows.

water phase. Purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Added hydroxyacetophenone with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to a target temperature of 75-80°C with stirring at 300 rpm: butylmethoxydibenzoylmethane,

homosalate, bis-ethylhexyloxyphenol methoxyphenoxyphenyl triazine, caprylyl methicone, octocrylene, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate, tocopherol acetate, dimethicone; an acrylate/dimethicone copolymer; and a styrene/acrylate copolymer.

At 60°C, the acrylates/C10-30 alkyl acrylate crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C., menthyl lactate, ethanol, pentylene glycol, flavor and silica were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for composition 6

Name according to INCI Function Weight (%) Water carrier medium 54.49 Disodium salt EDTA Chelating agent 0.10 Glycerol Humidifier 3.00 Polyurethane-62; trideceth-6 viscosifying agent 0.8 Hydroxyacetophenone Antioxidant 0.5 Styrene/acrylate copolymer Opacifier 2.5 Cross-linked polymer acrylates/C10-30 alkyl acrylate viscosifying agent 0.2 Butylmethoxydibenzoylmethane sun protection agent 3.7 Homosalat sun protection agent 9.0 Bis-ethylhexyloxyphenolmethoxyphenyl-triazine sun protection agent 3 Potassium cetyl phosphate; hydrogenated palm oil glycerides Emulsifier 0.35 Glyceryl stearate Emulsifier 0.30 Octocrylene sun protection agent 9.0 caprylylmethicone Softener 2.0 Phenoxyethanol preservative 0.70 Dimethicone; acrylates/dimethicone copolymer Film-forming agent 1.20 Dicapryl carbonate Softener 1.50 Diisopropyl adipate Softener 2.0 tocopherol acetate Antioxidant 0.5 Sodium hydroxide pH regulator 0.11 Silica Skin conditioner 2.00 pentylene glycol Humidifier 0.5 flavoring flavoring 0.35 Menthyl lactate flavoring 0.20 Alcohol Solvent 2.00

Composition 6 was prepared as follows.

water phase. Purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Added hydroxyacetophenone with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: butylmethoxydibenzoylmethane, homosalate, bis-ethylhexyloxyphenol methoxyphenoxyphenyl triazine, caprylylmethicone, octocrylene, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate , tocopherol acetate, dimethicone; acrylates/dimethicone copolymer, styrene/acrylates copolymer and potassium cetyl phosphate; hydrogenated palm oil glycerides.

At 60°C, the acrylates/C10-30 alkyl acrylate crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C., pentylene glycol, flavor, ethanol and silica were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for composition 7

Name according to INCI Function Weight (%) Water carrier medium 61.29 Disodium salt EDTA Chelating agent 0.1 Glycerol Humidifier 3 Polyurethane-62; trideceth-6 viscosifying agent 0.8 Hydroxyacetophenone Antioxidant 0.5 Styrene/acrylate copolymer Opacifier 2.5 Cross-linked polymer acrylates/C10-30 alkyl acrylate viscosifying agent 0.2 Butylmethoxydibenzoylmethane sun protection agent 2.25 Homosalat sun protection agent eight Bis-ethylhexyloxyphenolmethoxyphenyl-triazine sun protection agent 2 Glyceryl stearate Emulsifier 0.3 Octocrylene sun protection agent 6 caprylylmethicone Softener 2 Phenoxyethanol Softener 0.7 Dimethicone; acrylates/dimethicone copolymer Softener 1.2 Dicapryl carbonate Film-forming agent 1.5 Diisopropyl adipate Softener 2 tocopherol acetate Antioxidant 0.5 Sodium hydroxide pH regulator 0.11 Silica Skin conditioner 2 pentylene glycol Humidifier 0.5 flavoring flavoring 0.35 Menthyl lactate flavoring 0.2 Alcohol Solvent 2

Composition 7 was prepared as follows.

water phase. Purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Added hydroxyacetophenone with stirring and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: butylmethoxydibenzoylmethane, homosalate, bis-ethylhexyloxyphenol methoxyphenoxyphenyl triazine, caprylylmethicone, octocrylene, phenoxyethanol, diisopropyl adipate, caprylyl carbonate, glyceryl stearate , tocopherol acetate, dimethicone; an acrylate/dimethicone copolymer; and a styrene/acrylate copolymer.

At 60°C, the acrylates/C10-30 alkyl acrylate crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C., menthyl lactate, ethanol, flavor and silica were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for composition 8

Name according to INCI Function Weight (%) Water carrier medium 55.92 Disodium salt EDTA Chelating agent 0.1 Glycerol Humidifier 3 Chlorphenesin preservative 0.2 Tridecet-6; polyurethane-62 viscosifying agent 0.7 Cross-linked polymer acrylates/C10-30 alkyl acrylate viscosifying agent 0.18 Butylmethoxydibenzoylmethane sun protection agent 2.5 Homosalat sun protection agent 9 Ethylhexyl salicylate sun protection agent four Bis-ethylhexyloxyphenolmethoxyphenyl-triazine sun protection agent 2.5 Glyceryl stearate Emulsifier 0.3 Octocrylene sun protection agent 9 Dimethicone; acrylates/dimethicone copolymer Softener 1.2 caprylylmethicone Softener one Phenoxyethanol preservative 0.7 Diisopropyl adipate Softener 2 Dicapryl carbonate Softener 1.5 Polymethylsilsequioxane Softener 2 Ethylhexylglycerin Skin conditioner one flavoring flavoring 0.2 Alcohol Solvent 3

Composition 8 was prepared as follows.

water phase. Purified water, disodium EDTA and glycerin were added to the main vessel and stirred at 300 rpm until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Added chlorphenesin and hydroxyacetophenone with mixing and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: butylmethoxydibenzoylmethane, homosalate, bis-ethylhexyloxyphenol methoxyphenoxyphenyltriazine, ethylhexyl salicylate, caprylyl methicone, octocrylene, phenoxyethanol, diisopropyl adipate, caprylyl carbonate , glyceryl stearate, tocopheryl acetate, dimethicone; acrylates/dimethicone copolymer, ethylhexylglycerin.

At 60°C, the acrylates/C10-30 alkyl acrylate crosspolymer was added.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C., flavor, ethanol and polymethylsilsequioxane were added. The batch was homogenized for 3 minutes at 4500 rpm. Next, the pH of the batch was measured and adjusted to a value of 5.5 using 50% sodium hydroxide solution.

Table for Comparative Composition D

Name according to INCI Function Weight (%) Water carrier medium 52.9 Disodium EDTA Chelating agent 0.1 Glycerol Humidifier 3 Chlorphenesin preservative 0.2 Phenylbenzylimidazolesulfonic acid sun protection agent 2 Sodium hydroxide pH regulator 0.6 Tridecet-6; polyurethane-62 Viscosifying agent 0.7 Sodium polyacrylate Viscosifying agent 0.3 Butylmethoxydibenzoylmethane sun protection agent 2.5 Homosalat sun protection agent 9 Ethylhexyl salicylate sun protection agent four Bis-ethylhexyloxyphenolmethoxyphenyltriazine sun protection agent 2.5 Glyceryl stearate Emulsifier 0.3 Octocrylene sun protection agent 7 Dimethicone; acrylates/dimethicone copolymer Softener 1.2 caprylylmethicone Softener 3 Phenoxyethanol preservative 0.7 Diisopropyl adipate Softener 2 tocopherol acetate Softener 0.1 Dicapryl carbonate Softener 1.5 Polymethylsilsequioxane Softener 2 Ethylhexylglycerin Skin conditioner one flavoring flavoring 0.2 Menthyl lactate flavoring 0.2 Alcohol Solvent 3

Comparative composition D was prepared as follows.

water phase. Purified water, disodium EDTA, glycerin and sodium hydroxide were added to the main vessel and stirred at 300 rpm until complete dissolution. Added phenylbenzimidazolesulfonic acid with stirring until complete dissolution. Started heating up to 50°C and slowly injected Tridecet-6; polyurethane-62 with stirring at a speed of 300 rpm. After complete hydration of polyurethane-62, the temperature was raised to 75-80°C. The temperature was maintained at 75-80°C. Added chlorphenesin and hydroxyacetophenone with mixing and mixed until complete dissolution.

oil phase. The following ingredients were added to a separate container and heated to the target temperature of 75-80°C with stirring at 300 rpm: butylmethoxydibenzoylmethane, homosalate, bis-ethylhexyloxyphenol methoxyphenoxyphenyltriazine, ethylhexyl salicylate, caprylyl methicone, octocrylene, phenoxyethanol, diisopropyl adipate, caprylyl carbonate , glyceryl stearate, tocopheryl acetate, dimethicone; acrylate/dimethicone copolymer and ethylhexylglycerol.

At a temperature of 60°C added sodium polyacrylate.

Emulsification. At a temperature of the aqueous phase and the oil phase between 75°C and 80°C, the oil phase was slowly added to the aqueous phase with vigorous stirring and mixed at a speed of 1000 rpm. Homogenized for 4 minutes at 4500 rpm. Cooling of the batch to a temperature below 40° C. was started, stirring it at a speed of 800 rpm.

subsequent additions. After the mixture was cooled to below 40° C., flavor, ethanol, mentyl lactate and polymethylsilsequioxane were added. The batch was homogenized for 3 minutes at 4500 rpm. The pH of the batch was then measured and adjusted to 7.0 using 50% sodium hydroxide solution.

EXAMPLE 4

The complex viscosities of compositions 5-8 and comparative composition D were tested using the complex viscosity test method described above.

In addition, for each of these compositions, the organoleptic sensation on the skin was evaluated when rubbed using the method described in example 2.

The results are shown in Table 3.

Table 3

Test composition Linear complex viscosity
|η*| at 100 rad/s (cP) Organoleptic characteristics when rubbed Composition 5 1840 Easy application, watery feel Composition 6 3935 Easy application, watery feel Composition 7 2364 Easy application, watery feel Composition 8 3281 Easy application, watery feel Comparative Composition D Composition separated, unstable, measurements impossible Unstable, phase separation

Only compositions 5-8 containing a combination of from about 0.55 to about 1 wt.% hydrophobically modified polyurethane; from about 0.1 to about 0.3 wt.% acrylate crosspolymer; and at least about 0.1% by weight of glyceryl stearate had linear complex viscosities of 1500-5000.

Accordingly, compositions 5-8 required little effort to apply, and provided a watery feel when rubbed, felt fresh when applied, dried quickly, and left a matte and refreshing finish. In contrast, in the comparative composition, the D phases are separated; the composition is unstable, complex viscosity measurement was not possible.

Claims (15)

1. A sunscreen composition comprising: (a) at least 10% by weight of one or more UV filters; (b) from 0.55 to 1 wt.% hydrophobically modified polyurethane; (c) from 0.1 to 0.3 wt.% increasing the viscosity of the polymer, where the increase in viscosity of the polymer is an acrylate crosspolymer; and (d) at least 0.1% by weight of glyceryl stearate. 2. The composition of claim. 1, containing at least about 0.1 wt.% avobenzone. 3. Composition according to claim 2, additionally containing octocrylene and homosalate. 4. Composition according to claim 1, additionally containing hyaluronic acid. 5. Composition according to claim 1, additionally containing silica. 6. The composition of claim. 1, additionally containing a moisturizer selected from the group consisting of glycerol, pentylene glycol and mixtures thereof. 7. Sunscreen composition according to claim 1, containing: - at least 10% by weight of a combination of UV filters containing avobenzone, octocrylene, homosalate and a triazone derivative; - silica; a humectant selected from the group consisting of glycerol, propylene glycol and mixtures thereof; and - ethanol.