FR3115686A1 - Composition for conditioning keratinous materials - Google Patents

Abstract

Composition for conditioning keratinous materials The present invention relates to a composition for conditioning keratinous materials, comprising (A) spherical particles of lipophilically modified silica; (B) a medium/solvent, selected from water and an alcohol; and (C) at least one thickener comprising a stabilizing thickener (C-1) selected from the group consisting of carboxylic acid polymers. Figure for abstract: NONE

Description

Composition for conditioning keratinous materials

The present invention relates to a composition for conditioning keratinous materials, in particular the skin, the scalp or the hair together with the scalp. The invention also relates to a process for conditioning keratinous materials, in particular the skin, the scalp or the hair together with the scalp, using the composition of the present invention.

Context

Keratinous materials are widely present on the surface of the human body, for example on the skin, the scalp and the hair. Many people have long sought to refresh the surface of the body, in order to feel comfortable in everyday life and at work. Among other things, the sticky/oily feeling is a particular concern for many people. This is why various products are developed to treat a person's sticky or greasy feeling.

In the keratinous materials on the surface of the body, the scalp is particularly prone to suffer from fat. Various formulas have been developed for a sticky or oily scalp, including those supplied in a separate form, e.g. lotion, spray and the like, and those incorporated into conventional hair and/or scalp products, e.g. shampoo, leave-in conditioner and/or leave-in conditioner.

A variety of conditioning compositions have been developed, primarily for hair, which are generally used to enhance or restore hair to its natural luster, shine, softness and suppleness. When used with shampoo, the commonly accepted method of conditioning hair is to shampoo, then rinse, and then apply a conditioning composition, optionally followed by a second rinse.

There is therefore still a need in the art to develop new compositions to primarily care for the scalp, particularly the non-greasy feel.

Silica is known to be used in cosmetics, for example as a conventional filler or as a substrate for absorbing lacquer tints. Derivatives of silica and/or modified silica are also used. However, any role of (modified) silica in solving the problem of the fatty state of keratinous materials is unknown in the art. The inventors have surprisingly discovered, thanks to in-depth studies, that by using silica specifically modified, in particular with regard to the structure and the chemical bonds, in a specific form, the migration of the sebum, and therefore the sensation fat, on keratinous materials, especially on the scalp, can be effectively inhibited.

Thus, a subject of the present invention is therefore a leave-in composition for conditioning keratinous materials, comprising:

spherical particles of lipophilically modified silica, homogeneously dispersed in the medium/solvent;

at least one medium/solvent, and

at least one thickener.

The composition according to the present invention is particularly useful for conditioning keratinous materials, such as, in particular, for the care of the scalp. Accordingly, the composition according to the present invention may be in various forms, for example in the form of a lotion, cream, spray and the like, to be applied to the scalp directly, to the skin or to the hair together with the scalp.

embodiments of the ' invention

Throughout the description, including the claims, the term "comprising a" should be understood as being synonymous with "comprising at least one", unless otherwise stated. In addition, the expression "at least one" used in the present description is equivalent to the expression "one or more".

Throughout the description, including the claims, an embodiment defined with "comprising" or the like is to be understood to encompass a preferable embodiment defined with "consisting substantially of" and a preferable embodiment defined with "consisting of". .

Apart from the working examples or unless otherwise indicated, all numbers expressing quantities of components and/or reaction conditions must be understood as being modified in all cases by the term "about", the meaning of which is conventionally known in the art. art, for example, to within 10% of the number indicated (for example, "about 10%" means 9% - 11% and "about 2%" means 1.8% - 2.2%).

Throughout the description, including the claims, the "keratinous material" according to the present invention is skin, hair, scalp, eyelashes, eyebrows, body hair, nails, lips or mucous membranes. Preferably, the keratinous material according to the present invention is a position where a sticky or greasy feeling is easily felt, for example, the scalp or the skin, and/or a position where the sticky or greasy feeling has an impact on the hair. , For example.

Throughout the description, including the claims, the terms "care", "maintenance" and other similar terms according to the present invention are to be understood as including any means of caring for, maintaining or improving the condition of the materials. keratinous materials, including not only the conventional means for maintaining keratinous materials, for example the skin or the scalp, but also any means known to be useful for conditioning and/or cleaning keratinous materials, for example the hair or scalp.

In the application, unless specifically stated otherwise, the contents, parts and percentages are expressed on a weight basis.

The present invention relates to a composition for the care of keratinous materials, comprising:

(A) spherical particles of lipophilically modified silica, homogeneously dispersed in the medium/solvent;

(B) at least one medium/solvent selected from water and alcohols; And

(C) at least one thickener comprising a stabilizing thickener (C-1) selected from the group consisting of polymers of carboxylic acids.

The present invention therefore proposes the use of spherical particles of lipophilically modified silica to soothe the greasy sensation of keratinous materials on the surface of the body, in particular the scalp.

Other characteristics and advantages of the invention will appear more clearly on reading the description and the examples which follow.

Spherical particles of lipophilically modified silica (A)

The composition of the present invention comprises spherical particles of lipophilically modified silica (A).

According to the present invention, a "spherical particle" means a particle in the form of a sphere or at least an approximate sphere, and/or a particle having an aspect ratio of about 0.9 to 1.1, for example, about 0.95 to 1.05. For example, one skilled in the art can determine if a particle is spherical according to common knowledge. In particular, with regard to a given silica, it is within the competence of those skilled in the art to distinguish the shape of the sphere from other shapes of the plate, rod, powder, strip, irregular or similar shapes, as well as similar amorphous.

According to the present invention, a "homogeneously dispersed" state is desired for the silica. For example, the formation of a dispersion, emulsion, solution or the like, the definition and/or criteria of which are known in the art, may represent the achievement of a "homogeneously dispersed" state. Nevertheless, it should be understood that once a condition can be determined by one skilled in the art to be significantly different from an "inhomogeneous" condition, the condition can be judged to substantially satisfy the " homogeneously dispersed.

According to the present invention, a “lipophilically modified” silica means a silica having undergone a lipophilic modification. According to the present invention, by lipophilic modification is meant any organic modification capable of providing a hydrophobic or lipophilic treatment to the silica. For example, a silica can be treated with a siloxane compound, for example hydroxydimethylsiloxane (or other silanes, such as silazane, etc.), whereby the silanol group on the surface of the silica and the silanol group of the compound siloxane are condensed. Among others, useful examples of "lipophilically modified" silica can be silica silylate and silica dimethyl silylate, for example, silica silylate, such as that available from TOKUYAMA CORPORATION under the name AIRLICA® TL-10 .

According to the present invention, when incorporated into the composition, the spherical particles of lipophilically modified silica can exhibit an oil absorption capacity of 500 mL/100 g or more, 600 mL/100 g or more, or even 700mL/100g or more.

The spherical particles of lipophilically modified silica (A) may be present in the composition according to the present invention in an amount ranging from 0.01% to 5% by weight, preferably ranging from 0.1% to 3% by weight, or preferably ranging from 0.3% to 1% by weight, based on the total weight of the composition.

Medium/solvent (B)

The composition according to the invention can advantageously comprise at least one medium/solvent to be used as component (B), including water and/or an organic medium/solvent. For the purposes of the present invention, component (B) serves as a medium for component (A), the spherical particles of lipophilically modified silica and, if present, other insoluble components to be dispersed as homogeneously as possible. , and serves as a solvent for soluble components if present.

Water

The composition according to the invention can advantageously comprise water in different amounts. For low viscosity applications of the composition, for example as a leave-on lotion, a relatively high amount of water may be used. For example, water is used in a content greater than or equal to 40% by weight relative to the total weight of the composition. The water content of the low viscosity composition according to the invention is preferably in a range of 40 to 99% by weight, more preferably 50 to 90% by weight, or 60 to 80% by weight, based on the total weight of the composition.

For high viscosity applications of the composition, for example as a leave-on cream, a relatively lower amount of water may be used. The high-viscosity composition according to the invention advantageously comprises water in a content less than or equal to 40% by weight relative to the total weight of composition (I). The water content of the low viscosity composition according to the invention preferably ranges from 10 to 40% by weight, more preferably from 15 to 35% by weight, or from 20 to 30% by weight, based on the total weight of composition.

Organic medium/solvent

The composition according to the invention may also comprise one or more organic media/solvents, preferably water-soluble organic media/solvents (solubility in water greater than or equal to 5% at 25° C. and at atmospheric pressure) .

Examples of organic media/solvents which may be mentioned include linear or branched, and preferably saturated, monoalcohols or diols comprising 2 to 10 carbon atoms, such as ethanol, (iso)propanol, butanol, hexylene glycol (2-methyl-2,4-pentanediol), neopentyl glycol and 3-methyl-1,5-pentanediol, butylene glycol, dipropylene glycol and propylene glycol; aromatic alcohols such as phenylethyl alcohol; polyols containing more than two hydroxyl functions, in particular C3-C6 polyols, such as glycerol; polyol ethers, for example monomethyl, monoethyl and monobutyl ether of ethylene glycol, propylene glycol or their ethers, for example monomethyl ether of propylene glycol; as well as alkyl ethers of diethylene glycol, in particular C ₁ -C ₄ alkyl ethers, for example monoethyl ether or monobutyl ether of diethylene glycol, alone or as a mixture.

The organic media/solvents, when present, generally represent between 0.1% and 40% by weight relative to the total weight of the composition according to the invention, and preferably between 1% and 30% by weight, or between 5% and 20% by weight.

Thickener (C)

In leave-on form, it is preferred that the leave-in product can be evenly distributed on the scalp, or on the hair together with the scalp. Consequently, at least one thickener (C) can preferably be incorporated into the composition according to the present invention, so as to adjust the viscosity of the product obtained and to facilitate the lamellar distribution or the formation of a uniform film of the composition on the scalp or the hair together with the scalp.

Non-limiting examples of thickeners (C) include carboxylic acid polymers, cross-linked polyacrylate polymers, polyacrylamide polymers, polysaccharides and gums.

Stabilizing Thickener (C-1)

The inventors have surprisingly discovered that when the thickener (C) comprises a stabilizing thickener (C-1), the stability of the composition formed, in particular for a leave-in conditioner product, can be unexpectedly improved. Preferably, the stabilizing thickener (C-1) is selected from the group consisting of specific carboxylic acid polymers.

Examples of carboxylic acid polymers include a crosslinking compound containing one or more monomers derived from acrylic acid, substituted acrylic acid, and salts and esters of these acrylic acids and substituted acrylic acids, wherein the crosslink contains two or more carbon atoms. The carbon double bond is derived from a polyol. Examples of commercially available carboxylic acid polymers include a carbomer, which is a homopolymer of acrylic acid cross-linked with sucrose or an allyl ether of pentaerythritol (e.g. CARBOPOL® ULTREZ 10 POLYMER from LUBRIZOL).

As a carboxylic acid polymer, the use of the stabilizing thickener (C-1) can allow a relatively lower pH of the composition according to the present invention.

Without being limited to any known theory, it is found that the amount of stabilizing thickener (C-1) is essential for the stability of the composition formed. The stabilizing thickener (C-1) can therefore be present in the composition according to the present invention in an amount ranging from 0.14% to 5% by weight, preferably from 0.2% to 3% by weight, or from preferably from 0.3% to 1% by weight, based on the total weight of the composition.

Additional thickener (C-2)

In addition to the refreshing thickener (C-1), the thickeners (C) may additionally comprise an additional thickener (C-2), for example those which increase the viscosity of the composition without significantly modifying the effectiveness of a or more of the active ingredients within the composition. The additional thickener (C-2) can also additionally increase the stability of the composition.

Non-limiting examples of polyacrylamide polymers for use as an additional thickener (C-2), including nonionic polyacrylamide polymers, including branched or unbranched substituted polymers, include polyacrylamides, isoparaffins, and laureth-7, acrylamide. And substituted multiblock copolymers of acrylamide with acrylic acid and substituted acrylic acid.

Non-limiting examples of polysaccharides for use as an additional thickener (C-2) include cellulose, carboxymethyl hydroxyethyl cellulose, cellulose acetate propionate, hydroxyethyl cellulose, hydroxyethyl ethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, methylhydroxyethylcellulose, microcrystalline cellulose, sodium sulphate cellulose and mixtures thereof. Another example is an alkyl-substituted cellulose in which the hydroxyl group of the cellulosic polymer is hydroxyalkylated (preferably hydroxyethylated or hydroxypropylated) to form a hydroxyalkylated cellulose, which is subsequently modified with a linear or branched C ₁₀ -C ₃₀ alkyl group by an ether chain. These polymers are typically linear or branched C ₁₀ -C ₃₀ alcohol ethers with hydroxyalkyl celluloses. Other useful polysaccharides include linear scleroglucans comprising linked glucose (1-3) units, where each of the units has a glucose (1-6) linked.

Non-limiting examples of gums for use as an additional thickener (C-2) include gum arabic, agar-agar, algin, alginic acid, ammonium alginate, amylopectin, calcium alginate, calcium carrageenan, carnitine, carrageenan, dextrin, gelatin, guar gum, hydroxypropyltrimonium guar chloride, hectorite, hyaluronic acid, hydrated silica, hydroxypropyl chitosan, hydroxypropyl guar, karaya gum, seaweed, locust bean gum, natto gum, potassium alginate, potassium carrageenan, propylene glycol alginate , sclerotium gum, sodium carboxymethyl dextran, sodium carrageenan, gum tragacanth, xanthan gum and mixtures thereof.

Other examples of polymeric thickeners for use as an additional thickener (C-2) which may be mentioned include vinyl polymers, for example polyvinylpyrrolidones, copolymers of methylvinylether and malic anhydride, copolymer of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone and vinyl acetate; copolymers of vinylpyrrolidone and caprolactam; polyvinyl alcohol.

The additional thickener (C-2), if present, may be present in the composition according to the present invention in an amount ranging from 0.01% to 5% by weight, preferably ranging from 0.05% to 3% by weight, or preferably ranging from 0.1% to 1% by weight, based on the total weight of the composition.

Active conditioning agent (D)

The composition according to the invention may also comprise at least one conditioning active agent (D), which benefits from the conditioning effect, in particular for a leave-in conditioning product useful for keratinous materials.

The conditioning active (D) of the present invention may refer to ingredients which enhance the look and feel of the scalp/hair, increasing the body, suppleness or luster of the hair, or improving the texture of hair that has been damaged physically or by chemical treatment. Conventional scalp/hair conditioning actives are well suited to the present invention. Such conditioning actives include non-silicone cationic surfactants, silicones, fatty esters and other ingredients which are known in the art to have desirable hair conditioning properties.

Cationic surfactants, among others, are widely used as conditioning agents. The ability of this kind of cationic surfactants to provide a conditioning effect to the hair is attributable to the hydrophobic nature of the alkyl chain as well as the cationic charge of the polar head group. Examples of known cationic surfactants are quaternary ammonium compounds containing in the molecule at least one long alkyl chain. The expression "non-silicone cationic surfactant" means a surfactant having no silicon atoms in its structure and positively charged when it is contained in the composition of the invention. This surfactant can carry one or more permanent positive charges or contain one or more cationizable functions in the composition of the invention.

When the conditioning agent is a fatty ester, it may be either an ester of a C8-C30 fatty acid and C1-C30 monoalcohols or polyols including esters of C8-C30 fatty acids and C8-C30 fatty alcohol, or an ester of a C1-C7 dibasic acid and a C8-C30 fatty alcohol.

The conditioning active agent (D) of the present invention can also be one which provides a feeling of cooling and/or freshness, such as menthol and its derivatives, for example, ethyl menthane carboxamide, menthyl lactate , menthoxypropanediol.

The conditioning active agent (D) may be present in the composition according to the present invention in an amount ranging from 0.001% to 1% by weight, preferably ranging from 0.01% to 0.5% by weight, or ranging preferably from 0.02% to 0.2% by weight, based on the total weight of the composition.

Cationic polymer (E)

The composition according to the present invention may preferably comprise at least one cationic polymer.

The term “cationic polymer” is intended to denote any polymer comprising cationic groups and/or groups which can be ionized into cationic groups. Preferably, the cationic polymer is hydrophilic or amphiphilic. The preferred cationic polymers are chosen from those which contain units comprising primary, secondary, tertiary and/or quaternary amine groups which may either form part of the main polymer chain or be carried by a side substituent directly connected to it. Preferably, the present composition may comprise cationic polysaccharides, in particular cationic celluloses and cationic galactomannan gums. For the purposes of the invention, the present composition preferably comprises cationic celluloses.

Among the cationic celluloses, the present composition comprises cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer, which are described, for example, in US Pat. may mention hydroxyalkyl celluloses, for example hydroxymethyl-, hydroxyethyl- or hydroxypropyl celluloses grafted, in particular, with a salt of methacryloylethyltrimethylammonium, methacrylamidopropyltrimethylammonium, dimethyldiallylammonium or hydroxypropyltrialkylammonium, for example 2-hydroxypropyltrimethylammonium chloride. The commercial products corresponding to this definition are more particularly the products sold under the names Celquat® L 200 and Celquat® H 100 by the company National Starch, Polyquaternium-10 (ether of hydroxyethylcellulose-2-hydroxypropyltrimethylammonium chloride) such as the product sold under the name Polyquta® 400KC by the company KCI, Polyquaternium-6 (polydiallyl dimethyl ammonium chloride) such as the product sold under the name Merquat™ 100 polymer by Nalco. Polyquaternium polymers, among others, are particularly preferred, for example Polyquaternium-7, 11, 15, 16, 22, 39, 47, 55, 67 and 76.

The cationic polymer (E) may be present in the composition according to the present invention in an amount of 0.01 to 5% by weight, preferably 0.05 to 1% by weight, or preferably 0.1 to 0 6% by weight, based on the total weight of the composition.

Solubilizer (F)

The spherical particles of lipophilically modified silica (A) can be incorporated into the composition of the present invention in a water-alcohol system. Consequently, at least one solubilizer (F) is preferably included in the aqueous phase. For the purpose of good dispersion, the solubilizer is preferably a nonionic surfactant or a mixture thereof, more preferably a complex of solubilizers.

Examples of useful nonionic surfactants may include polyol esters of saturated or unsaturated chain fatty acids containing, for example, 8 to 24 carbon atoms and more preferably 12 to 22 carbon atoms, and their oxyalkylenated derivatives, that is to say derivatives containing oxyethylenated and/or oxypropylene units, such as glyceryl esters of C ₈ -C ₂₄ fatty acids and their oxyalkylenated derivatives; polyethylene glycol esters of C ₈ -C ₂₄ fatty acids and their oxyalkylenated derivatives; sorbitol esters of C ₈ -C ₂₄ fatty acids and their oxyalkylenated derivatives; sugar esters (sucrose, glucose or alkylglucose) of C ₈ -C ₂₄ fatty acids and their oxyalkylenated derivatives; fatty alcohol ethers; sugar ethers of C ₈ -C ₂₄ fatty alcohols and mixtures thereof.

Glyceryl esters of fatty acids which may be specially mentioned include glyceryl stearate (glyceryl monostearate, distearate and/or tristearate) (CTFA name: glyceryl stearate), glyceryl oleate or glyceryl ricinoleate, and their mixtures.

Polyethylene glycol esters of fatty acids which may be specially mentioned include polyethylene glycol stearate (polyethylene glycol monostearate, distearate and/or tristearate) and more particularly polyethylene glycol monostearate 50 EO (CTFA name: PEG-50 stearate ) and polyethylene glycol monostearate 100 EO (CTFA name: PEG-100 stearate), and mixtures thereof.

Mixtures of these surfactants can also be used, for example the product containing glyceryl stearate and PEG-100 stearate, sold under the name Arlacel® 165 by the company Uniqema, and the product containing glyceryl stearate (monodistearate of glyceryl) and potassium stearate, sold under the name Tegin® by the company Goldschmidt (CTFA name: glyceryl stearate SE).

Fatty acid esters of glucose or alkylglucose which may be mentioned in particular include glucose palmitate, alkylglucose sesquistearates, for example methylglucose sesquistearate, alkylglucose palmitates, for example methylglucose palmitate or ethylglucose palmitate, fatty esters of methylglucoside and more particularly the diester of methylglucoside and oleic acid (CTFA name: methyl glucose dioleate); the mixed ester of methylglucoside and the mixture of oleic acid/hydroxystearic acid (CTFA name: methyl glucose dioleate/hydroxysterate); isostearic acid methylglucoside ester (CTFA name: methyl glucose isostearate); methylglucoside lauric acid ester (CTFA name: methyl glucose laurate); the mixture of monoester and diester of methylglucoside and isostearic acid (CTFA name: methyl glucose sesquiisostearate) the mixture of monoester and diester of methylglucoside and stearic acid (CTFA name: methyl glucose sesquistearate) and in particular the product sold under the name Glucate® SS by the company Amerchol, and mixtures thereof.

Examples of oxyethylenated ethers of a fatty acid and of glucose or alkylglucose which may be mentioned include the oxyethylenated ethers of a fatty acid and methylglucose, and in particular the polyethylene glycol ether of the diester of methyl glucose and stearic acid containing approximately 20 mol of ethylene oxide (CTFA name: PEG-20 methylglucose distearate), such as the product sold under the name Glucam® E-20 distearate by the company Amerchol; the polyethylene glycol ether of the mixture of monoester and diester of methylglucose and stearic acid containing approximately 20 mol of ethylene oxide (CTFA name: PEG-20 methyl glucose sesquistearate) and in particular the product sold under the name Glucamate® SSE -20 by the company Amerchol, and the product sold under the name Grillocose® PSE-20 by the company Goldschmidt, and their mixtures.

Examples of sucrose esters that may be mentioned include sucrose palmitostearate, sucrose stearate and sucrose monolaurate.

Examples of fatty alcohol ethers which may be mentioned include polyethylene glycol ethers of fatty alcohols containing 8 to 30 carbon atoms and especially 10 to 22 carbon atoms, such as polyethylene glycol ethers of cetyl alcohol, stearyl alcohol or cetearyl alcohol (mixture of cetyl alcohol and stearyl alcohol). Examples which may be mentioned include ethers comprising from 1 to 200 and preferably from 2 to 100 oxyethylene groups, such as the CTFA names Ceteareth-20 and Ceteareth-30, and mixtures thereof.

The sugar ethers which may be specially mentioned are the alkylpolyglucosides, for example decylglucoside, for example the product sold under the name Mydol® 10 by the company Kao Chemicals, the product sold under the name Plantaren® 2000 by the company Henkel, and the product sold under the name Oramix® NS 10 by the company SEPPIC; caprylyl/capryl glucoside, for example the product sold under the name Oramix® CG 110 by the company SEPPIC or under the name Lutensol® GD 70 by the company BASF; lauryl glucoside, for example the products sold under the names Plantaren® 1200 N and Plantacare® 1200 by the company Henkel; cocoglucoside, for example the product sold under the name Plantacare 818/UP by the company Henkel; cetostearyl glucoside, optionally mixed with cetostearyl alcohol, sold for example under the name Montanov® 68 by the company SEPPIC, under the name Tego-Care® CG90 by the company Goldschmidt and under the name Emulgade® KE3302 by the company Henkel; arachidyl glucoside, for example in the form of the mixture of arachidyl alcohol and behenyl alcohol and arachidyl glucoside, sold under the name Montanov® 202 by the company SEPPIC; cocoylethylglucoside, for example in the form of the mixture (35/65) with cetyl alcohol and stearyl alcohol, sold under the name Montanov® 82 by the company SEPPIC; and their mixtures.

Polysorbate 20, PEG-60 hydrogenated castor oil can additionally be mentioned as examples of useful solubilizers.

The solubilizer (F) may be present in the composition according to the present invention in an amount of 0.01% to 5%, such as for example from 0.05% to 3%, or from 0.1 to 1%, reported to the total weight of the composition including all intermediate ranges and subranges.

pH adjuster (G)

The composition according to the present invention may optionally comprise at least one pH adjuster (G).

Examples of pH adjusters include, but are not limited to, aminomethyl propanol, aminomethylpropane diol, triethanolamine, triethylamine, citric acid, sodium hydroxide, acetic acid, hydroxide potassium, lactic acid, and any combination thereof.

The amount of the pH adjuster (G) in the composition according to the present invention can be adjusted and determined by those skilled in the art according to the desired pH, provided that its amount does not lead to other substantially harmful effects. . For example, particularly when a stabilizing thickener (C-1) is used in the composition of a leave-in conditioner, the pH adjuster may be present in an amount of 0.01% to 0.5% , such as 0.02% to 0.1%, based on the total weight of the composition including all intermediate ranges and subranges.

Additional additives

According to various embodiments, the compositions of the present invention are intended for application to keratinous materials, such as the skin, the scalp or the hair. In accordance with these embodiments, the compositions of the present invention may comprise various ingredients conventionally useful in compositions for the conditioning of keratinous materials, such as, an additional surfactant including a nonionic surfactant, an anionic surfactant and an amphoteric surfactant, active ingredients, humectants, additional fatty substances, anti-dandruff agents, anti-seborrhoeic agents, agents to prevent hair loss and/or to promote hair regrowth, vitamins and provitamins, including panthenol, sunscreens, sequestrants, plasticizers, acidifying agents, opacifiers, pearlescent or pearlescent agents, antioxidants, hydroxy acids, perfumes and preservatives.

A non-exhaustive list of such ingredients is contained in US Patent Application Publication No. 2004/0170586, the entire contents of which are incorporated herein by reference. Still more examples of these additional ingredients can be found in the International Cosmetic Ingredient Dictionary and Handbook (9th ed. 2002).

A person skilled in the art will take care to choose the optional additional additives and/or their quantity so that the advantageous properties of the composition according to the invention are not, or are not substantially, affected by the addition envisaged.

These additives can be chosen variously by those skilled in the art in order to prepare a composition which has the desired properties, for example, consistency or texture. In particular, additives, if used, and their amounts are particularly determined according to the specific products/applications thereof, e.g., leave-in conditioner, leave-in conditioner, skin care conditioner and the like.

These additives may be present in the composition in an amount between 0.01% and 50% based on the total weight of the composition, including all intermediate ranges and sub-ranges.

Method and use

The composition according to the present invention can generally be prepared according to the general knowledge of a person skilled in the art. Nevertheless, it is understood that a person skilled in the art can choose the mode of preparation, on the basis of his general knowledge, taking into account the nature of the components used, for example, their solubility in the vehicle, and the intended application for the compositions or kit.

According to one embodiment, the composition according to the present invention can be used for the care of keratinous materials, in particular of the scalp, or of the hair together with the scalp. This use can manifest itself as a process for caring for keratinous materials, in particular the skin, the scalp and/or the hair, comprising the step consisting in applying to said keratinous materials the composition of the present invention.

The composition according to the present invention is preferably useful for formulating hair conditioning products, scalp care products, or even skin care products. Furthermore, according to the discussions detailed above, it should be understood that the composition, and therefore the conditioning product and/or the shampoo according to the present invention can be free of silicone oil.

The keratinous fiber conditioning composition of the present invention can be used as leave-on products and can be formulated in a wide variety of product forms, including, but not limited to, creams, lotions, gels, emulsions, foams and vaporizers.

The keratinous fiber conditioning composition as described above can be used to condition keratinous fibers such as the hair together with the scalp by conventional methods, depending on the form of application of the composition.

For example, when used as a leave-in conditioner after shampooing, the composition of the present invention can be applied by a method comprising the following steps:

(i) shampooing the hair; And

(ii) applying to the hair an effective amount of the composition to condition the hair, without further rinsing the hair.

The invention will then be illustrated by the following examples, which present particularly advantageous embodiments.

Although the numerical ranges and parameters showing the general scope of the present invention are approximations, the numerical values presented in the specific examples are indicated as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective measurements. The following examples are intended to illustrate the present invention without limiting its scope.

Examples

The quantities/concentrations of ingredients in the compositions/formulas described below have been expressed in % by weight, relative to the total weight of each composition/formula.

Matter :

SILICA SILYLATE: AIRLICA® TL-10, available from TOKUYAMA CORPORATION, spherical particles of lipophilically modified silica;

Other unspecified materials were each commercially available.

EXAMPLE 1

Compositions A and A', and comparative compositions B-F, in Table 1, were prepared:

INCI Comp. AT Comp. AT' C.C.B C.C.C C.C.D C.C.E C.C.F SILICA SILYLATE
(AIRLICA TL-10, from TOKUYAMA CORPORATION) 1.0 0.5 1.0 1.0 1.0 1.0 1.0 Ethanol
(ABSOLUTE ETHANOL, from ANHUI ANTE FOOD) 20 20 20 20 20 20 20 MENTHOL
(620009 MENTHOL L PELLETS, from SYMRISE) 0.05 0.05 0.05 0.05 0.05 0.05 0.05 PEG-60 HYDROGENATED CASTOR OIL
(EUMULGIN CO 60, from BASF) 0.3 0.3 0.3 0.3 0.3 0.3 0.3 POLYQUATERNIUM-11
(GAFQUAT 755, from ISP) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 VP/VA COPOLYMER
(LUVISKOL VA 64 POWDER, from BASF) 0.4 0.4 0.4 0.4 0.4 0.4 0.4 CARBOMER
(CARBOPOL ULTREZ 10 POLYMER, from LUBRIZOL) 0.14 0.1 0.12 0.125 0.13 0.13 0.135 TRIETHANOLAMINE
(TRIETANOLAMINA 99, from OXITENO) 0.03 0.03 0.045 0.045 0.045 0.03 0.03 WATER QSP 100 QSP 100 QSP 100 QSP 100 QSP 100 QSP 100 QSP 100

Note: in table 1 above and in the others, “Compo. stands for "composition", while "C.C." stands for "comparative composition".

Compositions A to F listed above were prepared according to a manufacturing process known in the field.

EXAMPLE 2

The effect of the composition on the inhibition of grease was determined by a sebum migration test, comprising the following steps:

Step 1: cleaning the hair strands with standard DOP shampoo and washing with test products according to the known procedure RC-MCI-OIP-003B

Step 2: application of 100μL of colored artificial sebum (red) on a selected area of 3 cm on the upper region of the lock of hair.

Step 3: hang the lock of hair on an iron support at 30°C, 50% humidity.

Step 4: taking pictures of the lock of hair at 1h, 2h, 4h, 6h and 24h.

Step 5: Using image analysis to calculate the total area of sebum migration at each instant.

Sebum migration results were provided as follows:

Properties Composition A' oil absorption
(sebum migration area, mm ² ) 239

For the sebum migration assay, less sebum migration area means more fat inhibition. Thus, it was clear that the comparative test A' using the spherical particles of lipophilically modified silica in a homogeneous manner once dispersed in the medium/solvent, can provide a strong inhibition of grease, reflected by the low migration area of sebum. . It was observed that when composition A was used, an even lower sebum migration area resulted.

EXAMPLE 3

6 volunteers aged 25 to 45 applied compositions A and B to the hair and scalp every day for 3 days. The sticky or greasy feeling scores before the application of compositions A and B were given as baselines, the sticky or greasy feeling scores after the application of compositions A and B were given each day, the average difference was was shown in Table 3.

The volunteers gave fat sensation scores, where:

0 means unchanged;

1 means somewhat improved;

2 meant significantly improved; And

3 meant substantially devoid of greasy feeling.

The average scores of the 6 volunteers were counted in instantaneous status, 24h, and 48h, and were calculated for the averages of each day. The average scores for the total 3 days have been provided in Table 3 below.

Consumers 1-6
Instant average Day 2
Consumers 1-6
24 hour average Day 3
Consumers 1-6
Average of 48h Composition A 2.0 2.0 2.0 Comparative composition B 1.0 1.0 1.0

Note: For convenience, the average scores in Table 3 have been rounded to a whole number.

Referring to Table 3, the lower the score, the less the stickiness or greasy feeling. Composition A was observed to exhibit a very good long-term non-stick or greasy feel.

EXAMPLE 4

Other performance of the compositions was also determined according to methods known in the art. The results have been provided in Table 4 below:

Properties Comp. AT C.C.B C.C.C C.C.D C.C.E C.C.F Viscosity
(M2,UD) 42.8 36.7 36.4 40.4 40.3 35.6 pH 6,423 6.6 6.66 6.69 6.77 6.5 Stability
(45℃-2M) Steady Unstable
(Separate) Unstable
(Separate) Unstable
(Separate) Unstable
(Separate) Unstable
(Separate)

Claims (10)

Composition for conditioning keratinous materials, comprising:
(A) spherical particles of lipophilically modified silica, homogeneously dispersed in a medium/solvent,
(B) at least one medium/solvent selected from water and alcohols, and
(C) at least one thickener comprising a stabilizing thickener (C-1) chosen from the group consisting of polymers of carboxylic acids. A composition according to claim 1, wherein the spherical particles of lipophilically modified silica (A) comprise silica silylate and silica dimethyl silylate. Composition according to any one of the preceding claims, in which the alcohol is chosen from the group consisting of C2-C10 monoalcohol, C2-C10 diols and C3-C6 polyols containing more than two hydroxyl functions, for example ethanol, (iso)propanol, butanol, hexylene glycol, neopentyl glycol, butylene glycol, dipropylene glycol, propylene glycol. A composition according to any preceding claim, wherein the stabilizing thickener (C-1) is selected from the group consisting of acrylic acid, substituted acrylic acid, and salts and esters of acrylic acid and acrylic acid substituted, for example, a carbomer. Composition according to any one of the preceding claims, further comprising at least one additional thickener (C-2), chosen from the group consisting of vinyl polymers, for example polyvinylpyrrolidones, copolymers of methyl vinyl ether and malic anhydride , the copolymer of vinyl acetate and crotonic acid, the copolymers of vinylpyrrolidone and vinyl acetate; copolymers of vinylpyrrolidone and caprolactam; polyvinyl alcohol. A composition according to any preceding claim, further comprising at least one active conditioning agent (D), which is selected from the group consisting of non-silicone cationic surfactants, fatty esters, and menthol and its derivatives. Composition according to any one of the preceding claims, further comprising at least one cationic polymer (E), chosen from the group consisting of cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer. water, for example polyquaternium polymers. Composition according to any one of the preceding claims, further comprising at least one solubilizer (F), chosen from the group consisting of glyceryl esters of C8-C24 fatty acids, and their oxyalkylenated derivatives; polyethylene glycol esters of C8-C24 fatty acids, and their oxyalkylenated derivatives; sorbitol esters of C8-C24 fatty acids and their oxyalkylenated derivatives; sorbitan esters of C8-C24 fatty acids and their oxyalkylenated derivatives; sugar esters of C8-C24 fatty acids and their oxyalkylenated derivatives; fatty alcohol ethers; C8-C24 fatty alcohol sugar ethers and mixtures thereof. Composition according to one of the preceding claims, which is free of silicone-based oil. Leave-in care product for keratinous materials comprising the composition according to any one of the preceding claims, useful for caring for the skin, the scalp and/or the hair.