SKINCARE AND / OR MAKE-UP COMPOSITION OF KERATINOUS MATERIALS

An oil-in-water emulsion with structuring agents, surfactants, AMPS® polymer, and C-glycosides stabilizes skincare and makeup compositions with high hydroxypropyl tetrahydropyrantriol, addressing instability issues at room and body temperatures, maintaining product integrity and luxurious feel.

FR3143984B1Active Publication Date: 2025-12-26LOREAL SA
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Patent Information

Application Number
FR2023000572
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-12-22
Filing Date
2023-01-23
Publication Date
2025-12-26
Estimated Expiration
2043-01-23

AI Technical Summary

Technical Problem

Existing skincare and makeup compositions containing high doses of hydroxypropyl tetrahydropyrantriol for anti-aging are unstable at room temperature and body temperature, leading to liquid leakage and compromising product stability.

Method used

A composition in the form of an oil-in-water emulsion comprising structuring agents, surfactants, AMPS® polymer, and C-glycosides, which maintains stability at room temperature and body temperature for a prolonged period.

Benefits of technology

The composition achieves stability at 25°C and 37°C for up to two months, ensuring a stable and luxurious feel without liquid leakage, making it suitable for skincare and makeup applications.

✦ Generated by Eureka AI based on patent content.
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Abstract

CARE AND / OR MAKE-UP COMPOSITION FOR KERATINOUS MATERIALS The present invention relates to a composition in the form of an oil-in-water emulsion for the care and / or makeup of keratinous materials, comprising: (i) at least one structuring agent selected from C14-C22 saturated fatty acids; (ii) at least one surfactant selected from fatty acid esters; (iii) at least one surfactant selected from fatty alcohols, alkyl glucosides, and their combinations; (iv) at least one polymer derived from a monomer of 2-acrylamido-2-methylpropanesulfonic acid; and (v) at least one C-glycoside. The present invention also relates to a non-therapeutic method for the care and / or makeup of keratinous materials, comprising the application of said composition to the keratinous materials. Figure for the abstract: none
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Description

Title of the invention: SKINCARE AND / OR MAKE-UP COMPOSITION OF KERATINOUS MATERIALS technical field

[0001] The present invention relates to a cosmetic composition. In particular, the present invention relates to a skincare and / or makeup composition of keratinous materials. The present invention also relates to a non-therapeutic method for skincare and / or makeup of keratinous materials. RELATED ART

[0002] The skin is the protective barrier of the human body. It protects the inside of the body against physical damage (such as trauma) and biological damage (such as that caused by bacteria, viruses or fungi).

[0003] The development of formulas dedicated to the care and / or makeup of the skin and / or lips is ongoing.

[0004] It is common to incorporate anti-aging agents into cosmetic products that can promote collagen synthesis, for example hydroxypropyl tetrahydropyrantirol.

[0005] Efforts have been made to develop a cream product with high anti-aging potency and a luxurious feel for consumers. High potency can be achieved through a high dosage of anti-aging agents such as hydroxypropyl tetrahydropyrantriol, and the luxurious feel includes a high consistency, easy spreading, rapid absorption, and a non-sticky finish, and can be ensured by a lamellar structure. When using a high dosage of hydroxypropyl tetrahydropyrantriol in a lamellar structure, some leakage of liquid would occur at room temperature and at 37°C.

[0006] As a commercial product, it is desirable that the product be stable at room temperature (e.g. 25 °C) and 37 °C.

[0007] Therefore, there is a need to formulate a skin care and / or makeup composition comprising at least one anti-aging agent such as hydroxypropyl tetrahydropyrantriol, which is stable at both room temperature (e.g., 25°C) and 37°C for a relatively long period. Summary of the invention

[0008] The inventors have now discovered that it is possible to formulate such stable compositions both at room temperature (for example, 25 °C) and at 37 °C for a relatively long period.

[0009] Therefore, according to a first aspect, the present invention proposes a com position in the form of an oil-in-water emulsion for skincare and / or makeup of keratinous materials, comprising:

[0010] (i) at least one structuring agent selected from C12-C22 saturated fatty acids;

[0011] (ii) at least one surfactant selected from fatty acid esters;

[0012] (iii) at least one surfactant selected from fatty alcohols, alkylglucosides and their combinations;

[0013] (iv) at least one polymer derived from an acid monomer 2-acrylamido-2-methylpropanesulfonic (hereinafter abbreviated as "AMPS® polymer"); and

[0014] (v) at least one C-glycoside selected from compounds of formula (I): XR (I) S—~ &

[0015] in which:

[0016] - R represents a saturated alkyl radical in C1 to C1, in particular in C1 to C4, which can optionally be replaced by at least one radical chosen from OH, COOH or COOR" 2R"2 being a CrC4 saturated alkyl radical

[0017] - S represents a monosaccharide or polysaccharide comprising up to 20 sugar motifs, in particular up to 6 sugar motifs, in the form of pyranose and / or furanose and of the L and / or D series, said monosaccharide or polysaccharide being able to be substituted by a hydroxyl group which is necessarily free and optionally one or more protected amine functional groups, and

[0018] - X represents a radical chosen from the groups -CO-, -CH(OH)-, -CH(NH2)-, - CH(NHCH2CH2CH2OH)-, -CH(NHPh)- and -CH(CH3)- and in particular a radical -CO-, -CH(OH)- or -CH(NH2)- and more particularly a radical -CH(OH)-,

[0019] the S-CH2-X bond represents a C-anomeric bond, which can be α or [3,

[0020] as well as their physiologically acceptable salts, their solvates, such as hydrates, and their optical and geometric isomers.

[0021] The composition of the present invention is in the form of an oil-in-water emulsion. Thus, said composition comprises a continuous aqueous phase and a dispersed oily phase.

[0022] The inventors have found that the composition of the present invention is stable both at room temperature (for example, 25 °C) and at 37 °C for a relatively long period, for example for one month, or even for two months.

[0023] In a second aspect, the present invention proposes a non-therapeutic method for the care and / or makeup of keratinous materials, comprising the application of the composition according to the first aspect of the present invention on the keratinous materials.

[0024] Other advantages of the present invention will become more apparent upon reading from the description and examples that follow. DETAILED DESCRIPTION OF THE INVENTION

[0025] Unless otherwise specified, all technical and scientific terms used in this document have the same meaning as that commonly understood by a person skilled in the art in the field covered by the present invention. Where the definition of a term in the present invention conflicts with the meaning commonly understood by a person skilled in the art in the field covered by the present invention, the definition described in the present invention shall apply.

[0026] In what follows and unless otherwise indicated, the limits of a range of values ​​are included in that range, in particular in the expressions "between...and..." and "from...to...".

[0027] Furthermore, the expression "at least one" used in this description is equivalent to the expression "one or more".

[0028] Throughout this application, the term "comprising" shall be interpreted as encompassing all the specifically mentioned features as well as optional, additional, and unspecified features. As used in this document, the term "comprising" also refers to the embodiment in which no features other than the specifically mentioned features are present (i.e., "consisting of").

[0029] For the purposes of the present invention, the term "keratinous materials" is intended to cover human skin and mucous membranes such as the lips. Facial skin is particularly considered in the context of the present invention.

[0030] In the present invention, all percentages refer, unless otherwise indicated, to a weight percentage.

[0031] According to the first aspect, the present invention proposes a composition in the form of an oil-in-water emulsion for skincare and / or makeup of keratinous materials, comprising:

[0032] (i) at least one structuring agent selected from C12-C22 saturated fatty acids;

[0033] (ii) at least one surfactant selected from fatty acid esters;

[0034] (iii) at least one surfactant selected from a fatty alcohol, alkylglucoside and their combinations;

[0035] (iv) at least one polymer derived from a monomer of 2-acrylamido-2-methylpropanesulfonic acid; and

[0036] (v) at least one C-glycoside. Structuring agents

[0037] According to the first aspect, the composition of the present invention comprises at least one structuring agent selected from saturated C12-C22 fatty acids.

[0038] Examples of saturated C12-C22 fatty acids include myristic acid, pentadecanoic acid, palmitic acid, heptadecanoic acid, stearic acid, cetearyl acid, arachidic acid, behenic acid and combinations thereof.

[0039] Preferably, the structuring agent is chosen from among saturated C14-C18 fatty acids.

[0040] Preferably, the structuring agent is chosen from linear and saturated C14-C18 fatty acids.

[0041] In a particularly preferred manner, the structuring agent is chosen from myristic acid, palmitic acid, stearic acid and a combination thereof.

[0042] Advantageously, the structuring agent is present in an amount ranging from 0.5% by weight to 30% by weight, preferably from 1% by weight to 20% by weight, more preferably from 1.5% by weight to 7% by weight, relative to the total weight of the composition.

[0043] Surfactants selected from fatty acid esters

[0044] According to the first aspect, the composition of the present invention comprises at least one surfactant selected from fatty acid esters.

[0045] Preferably, the surfactant is chosen from

[0046] - mono- and polyglyceryl esters of a fatty acid or their ethoxylated derivatives;

[0047] - sorbitol esters of C8-C24 fatty acids and their polyoxyalkylated derivatives;

[0048] - fatty acid and glucose or alkylglucose esters or their ethoxylated derivatives;

[0049] - sucrose esters of a fatty acid;

[0050] - polyalkylene glycol fatty acid ester; and

[0051] - their mixtures.

[0052] As polyglyceryl esters (a) of fatty acid(s), mention should be made of the product containing 2 to 10 glycerol units, such as polyglyceryl monolaurate, oleate, myristate, caprylate or stearate comprising 2 to 10 glycerol units, polyglyceryl mono(iso)stearate comprising 2 to 10 glycerol units, polyglyceryl dioleate comprising 2 to 10 glycerol units, polyglyceryl dilaurate comprising 2 to 10 glycerol units, polyglyceryl dimyristate comprising 2 to 10 glycerol units, polyglyceryl trimyristate comprising 2 to 10 glycerol units, polyglyceryl trioleate comprising 2 to 10 glycerol units and polyglyceryl tricaprylate comprising 2 to 10 units glycerol.

[0053] Polyglyceryl esters include polyglyceryl esters of saturated, unsaturated and C16-C22 branched fatty acids, such as polyglyceryl-4 isostearate, polyglyceryl-3 oleate, polyglyceryl-2 oleate, polyglyceryl-2 sesquioleate, triglyceryl diistearate, diglyceryl monooleate, tetraglyceryl monooleate or mixtures thereof.

[0054] Monoglyceryl esters include, but are not limited to, glyceryl monoesters, preferably glyceryl monoesters of saturated, unsaturated and branched-chain C16-C22 fatty acids such as glyceryl oleate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monopalmitate, glyceryl monobehenate or mixtures thereof.

[0055] As monoglyceryl esters of fatty acids, glyceryl stearate (glyceryl mono-, di- and / or tristearate) (CTFA name: glyceryl stearate) or glyceryl ricinoleate or mixtures thereof may be cited, or as their polyoxyalkylated derivatives, mono-, di- or triester of fatty acids with a polyoxyalkylated glycerol (mono-, di- or triester of fatty acids with a polyalkylene glycol ether), preferably polyoxyethylenated glyceryl stearate (mono-, di- and / or tristearate), such as PEG-20 glyceryl stearate (mono-, di-, tristearate and / or triisostearate). Preferably, the polyoxyalkylated monoglyceryl ester derivative of fatty acids comprises 10 to 40 oxyethylene motifs, such as PEG-20 glyceryl triisostearate.

[0056] The C8-C24 fatty acid sorbitol esters and their polyoxyalkylated derivatives may be selected from sorbitan palmitate, sorbitan isostearate, sorbitan trioleate, and alkoxylated fatty acid and sorbitan esters containing, for example, 20 to 100 EO, such as sorbitan monostearate (CTFA name: sorbitan stearate), marketed by ICI under the name Span 60, sorbitan monopalmitate (CTFA name: sorbitan palmitate), marketed by ICI under the name Span 40, or sorbitan tristearate 20 EO (CTFA name: polysorbate 65), marketed by ICI under the name Tween 65, polyoxyethylenated sorbitan trioleate (polysorbate 85) or compounds marketed under the trade names Tween 20 or Tween 60 by Uniqema.

[0057] Examples of fatty acid and glucose or alkylglucose esters include glucose palmitate, alkylglucose sesquistearates such as methylglucose sesquistearate, alkylglucose palmitates such as methylglucose or ethylglucose palmitate, fatty esters of methylglucoside, methylglucoside and oleic acid diester (CTFA name: Methyl glucose dioleate), mixed ester of methylglucoside and oleic acid / hydroxystearic acid (CTFA name: Methyl glucose dioleate / hydroxystearate), methylglucoside and isostearic acid ester (CTFA name: Methyl glucose isostearate), methylglucoside and lauric acid ester (CTFA name: Methyl glucose laurate), and mixtures of monoester and methylglucoside and isostearic acid diester (CTFA name: Methyl glucose sesqui-isostearate), the mixture of monoester and methylglucoside and stearic acid diester (CTFA name: Methyl glucose sesquistearate),and in particular the product marketed under the name Glucate SS by AMERCHOL and their mixtures.

[0058] As ethoxylated fatty acid and glucose or alkylglucose ethers, one can to cite, for example, the ethoxylated ethers of fatty acids and methylglucose and, in particular, the polyethylene glycol ether of methylglucose and stearic acid diester with about 20 moles of ethylene oxide (CTFA name: PEG-20 methyl glucose distearate) such as the product marketed under the name Glucam E-20 distearate by AMERCHOL, the polyethylene glycol ether of the mixture of methylglucose and stearic acid monoester and diester with about 20 moles of ethylene oxide (CTFA name: PEG-20 methyl glucose sesquistearate) and in particular the product marketed under the name Glucamate SSE-20 by AMERCHOL and that marketed under the name Grillocose PSE-20 by GOLDSCHMIDT or mixtures thereof.

[0059] Examples of sucrose esters include sucrose palmitostearate, sucrose stearate and sucrose monolaurate.

[0060] Preferably, the polyalkylene glycol fatty acid ester is a polyethylene glycol ester comprising from 1 to 200 oxyethylene groups and a saturated or unsaturated fatty acid comprising from 12 to 30 carbon atoms, more preferably, the polyalkylene glycol fatty acid ester is selected from polyethylene glycol monostearate 2 EO or polyethylene glycol monostearate 100 (PEG-100 stearate).

[0061] Preferably, the surfactant is chosen from mono- and polyglyceryl esters of a fatty acid, fatty acid esters of polyalkylene glycol, and mixtures thereof.

[0062] More preferably, the surfactant can be selected from monoglyceryl esters or polyglyceryl esters of a C8-C24 fatty acid, preferably C12-C22, or their polyoxyalkylated derivatives, preferably containing 10 to 200, or more preferably 10 to 100 oxyalkylene motifs; sorbitol esters of a C8-C24 fatty acid, preferably C12-C22, or their polyoxyalkylated derivatives, preferably containing 10 to 200, or more preferably 10 to 100 oxyalkylene motifs; sugar esters (sucrose, maltose, glucose, fructose and / or alkylglycose) of a C8-C24 fatty acid, preferably C12-C22 or their polyoxyalkylated derivatives, preferably containing 10 to 200, or more preferably 10 to 100 oxyalkylene motifs; or mixtures thereof.

[0063] More preferably, the surfactant is chosen from glyceryl stearate, PEG-100 stearate and mixtures thereof.

[0064] Mixtures of the surfactant selected from mono- and polyglyceryl esters of a fatty acid can also be used, such as, for example, the product containing glyceryl stearate and PEG-100 stearate, marketed under the name ARLACEL 165 by CRODA, and the product containing glyceryl stearate (glyceryl mono- and distearate) and potassium stearate marketed under the name TEGIN by Goldschmidt (CTFA name: glyceryl stearate SE).

[0065] Advantageously, the surfactant selected from fatty acid esters is present in an amount ranging from 0.2% by weight to 20% by weight, preferably from 0.4% by weight to 15% by weight, more preferably from 0.8% by weight to 12% by weight, relative to the total weight of the composition.

[0066] Surfactants selected from fatty alcohols, alkali-glucosides and their combinations

[0067] According to the first aspect, the composition of the present invention comprises at least one surfactant selected from fatty alcohols, alkylglucosides and their combinations.

[0068] Preferably, the surfactant is chosen from

[0069] - the ethers of a sugar and C8-C24 fatty alcohols, such as caprylyl / capryl glucoside;

[0070] - C14-C24 fatty alcohols; and

[0071] - their mixtures.

[0072] Alkyl polyglucosides can be used as sugar ethers, and for example, one can cite in particular the ethers of a sugar and C8-C24 fatty alcohols comprising decyl glucoside such as the product marketed under the name MYDOL 10 by Kao Chemicals, the product marketed under the name PLANTAREN 2000 by Henkel and the product marketed under the name ORAMIX NS 10 by Seppic, caprylyl / capryl glucoside such as the product marketed under the name ORAMIX CG 110 by Seppic or under the name LUTENSOL GD 70 by BASF, lauryl glucoside such as the products marketed under the names PLANTAREN 1200 N and PLANTACARE 1200 by Henkel, coco-glucoside such as the product marketed under the name PLANTACARE 818 / UP by Henkel, and cetostearyl glucoside. optionally mixed with cetostearyl alcohol, marketed for example under the name MONTANOV 68 by Seppic, under the name TEGO-CARE CG90 by Goldschmidt and under the name EMULGADE KE3302 by Henkel,arachidyl glucoside, for example in the form of the mixture of arachidyl and behenyl alcohols and arachidyl glucoside marketed under the name MONTANOV 202 by Seppic, cocoylethyl glucoside, for example in the form of the mixture (35 / 65) with cetyl and stearyl alcohols, marketed under the name MONTANOV 82 by Seppic, and mixtures thereof.

[0073] As C14-C24 fatty alcohols, mention may be made of oleyl alcohol, stearyl alcohol, cetyl alcohol, behenyl alcohol, arachidyl alcohol, lignoceryl alcohol and mixtures thereof.

[0074] Preferably, the surfactant is chosen from glucoside ethers and a C12-C22 fatty alcohol; C14-C22 fatty alcohols; or combinations thereof.

[0075] More preferably, the surfactant is chosen from glucoside ethers and a C12-C22 fatty alcohol; C16-C22 fatty alcohols; or combinations thereof.

[0076] Advantageously, the surfactant is chosen from arachidyl alcohol, beta- henylic, oleyl alcohol, arachidyl glucoside and mixtures thereof.

[0077] In a preferred embodiment, the surfactant is chosen from arachidyl alcohol, behenyl alcohol and arachidyl glucoside.

[0078] Advantageously, the surfactant chosen from fatty alcohols, alkylglucosides and their combinations is present in an amount ranging from 0.2% by weight to 12% by weight, preferably from 0.4% by weight to 8% by weight, more preferably from 0.6% by weight to 3.5% by weight, relative to the total weight of the composition.

[0079] Advantageously, the weight ratio of the structuring agent selected from C12-C22 saturated fatty acids to the surfactant selected from fatty alcohols, alkylglucosides and their combinations is less than 2.5, preferably less than 1.8. AMPS® polymer(s)

[0080] According to the first aspect, the composition of the present invention comprises at least one polymer derived from at least one monomer which is acrylamido-2-methylpropanesulfonic acid (AMPS®) (or a polymer of AMPS®).

[0081] In particular, the AMPS® polymers according to the invention are homopolymers or crosslinked or non-crosslinked copolymers comprising at least the monomer acrylamido-2-methylpropanesulfonic acid (AMPS®), in a form partially or totally neutralized with a mineral base other than ammonia, such as sodium hydroxide or potassium hydroxide.

[0082] They are preferably totally neutralized or almost totally neutralized, that is to say neutralized at least 90%.

[0083] These AMPS® polymers according to the invention can be crosslinked or non-crosslinked.

[0084] When polymers are crosslinked, the crosslinking agents can be chosen from among the unsaturated polyolefin compounds commonly used for crosslinking polymers obtained by radical polymerization.

[0085] Examples of crosslinking agents include divinylbenzene, diallyl ether, dipropylene glycol diallyl ether, polyglycol diallyl ethers, triethylene glycol divinyl ether, hydroquinone diallyl ether, ethylene glycol or tetraethylene glycol di(meth)acrylate, trimethyl-lolpropane triacrylate, methylenebisacrylamide, methylenebismethacrylamide, triallylamine, triallyl cyanurate, diallyl maleate, tetraallylethylenediamine, tetraallyloxyethane, trimethylolpropane diallyl ether, allyl (meth)acrylate, allyl ethers of sugar alcohols, or other allyl or vinyl ethers of polyfunctional alcohols, as well as allyl esters of derivatives of phosphoric and / or vinylphosphonic acids or mixtures of these compounds.

[0086] According to a preferred embodiment of the invention, the crosslinking agent is selected from methylenebis-acrylamide, allyl methacrylate, or trimethylolpropane triacrylate (TMPTA). The degree of crosslinking generally ranges from 0.01 mol% to 10% by mol and more specifically from 0.2% by mol to 2% by mol relative to the polymer.

[0087] The AMPS® polymers according to the present invention are water-soluble or water-dispersible. In this case, they are:

[0088] - "homopolymers" comprising only AMPS® monomers and, if they are crosslinked, one or more crosslinking agents such as those defined above;

[0089] - or "copolymers" obtained from AMPS® and one or more monomers ethylenically unsaturated hydrophilic or hydrophobic monomers and, if crosslinked, one or more crosslinking agents such as those defined above. When said copolymers comprise hydrophobic ethylenically unsaturated monomers, these monomers do not comprise a fatty chain and are preferably present in small amounts.

[0090] For the purposes of the present invention, "fatty chain" means any hydrocarbon chain containing at least 7 carbon atoms.

[0091] By "water-soluble or water-dispersible", we mean polymers which, when introduced into an aqueous phase at 25°C, at a mass concentration of 1%, make it possible to obtain a macroscopically homogeneous and transparent solution, that is to say a solution having a maximum value of light transmittance, at a wavelength of 500 nm, through a 1 cm thick sample, of at least 60% and preferably at least 70%.

[0092] The "homopolymers" according to the invention are preferably crosslinked and neutralized, and they can be obtained according to the preparation process comprising the following steps:

[0093] (a) the monomer such as AMPS® in free form is dispersed or dissolved in a tert-butanol solution or water and tert-butanol solution;

[0094] (b) the monomer solution or dispersion obtained in (a) is neutralized with a or several mineral or organic bases, preferably ammonia NH3, in a quantity allowing to obtain a degree of neutralization of the sulfonic acid functions of the polymer ranging from 90% to 100%;

[0095] (c) the crosslinking monomer(s) is / are added to the solution or to the dispersion obtained in (b);

[0096] (d) a standard free radical polymerization is carried out in the presence of free radical initiators at a temperature ranging from 10 to 150 °C; the polymer precipitates in the tert-butanol-based solution or dispersion.

[0097] The AMPS® homopolymers according to the invention are preferably homopolymers of 2-acrylamido-2-methylpropanesulfonic acid, optionally crosslinked and / or neutralized, for example the poly(2-acrylamido-2-methylpropanesulfonic acid) sold by Clariant under the name Hostacerin AMPS® (CTFA name: ammonium) polyacryldimethyltauramide).

[0098] Water-soluble or water-dispersible AMPS copolymers according to the present invention preferably contain water-soluble ethylenically unsaturated monomers, hydrophobic monomers or mixtures thereof.

[0099] Water-soluble comonomers can be ionic or non-ionic.

[0100] Among the ionic water-soluble comonomers, examples that can be cited include the following compounds and their salts:

[0101] - (meth)acrylic acid,

[0102] - styrene sulfonic acid,

[0103] - vinylsulfonic acid and (meth)allylsulfonic acid,

[0104] - vinylphosphonic acid,

[0105] - maleic acid,

[0106] - itaconic acid,

[0107] - crotonic acid,

[0108] - the water-soluble vinyl monomers of formula (A) below: HzC=CRi I (A) CO I

[0109] in which:

[0110] - Ri is chosen from H, -CH3, -C2H5 and -C3H7 [YES] - Xi is chosen from:

[0112] - OR2-type alkyl ethers in which R2 is a linear hydrocarbon radical or branched, saturated or unsaturated, containing 1 to 6 carbon atoms, substituted by at least one sulfonic group (-SO3-) and / or sulfate (-SO4-) and / or phosphate (-PO4H2-).

[0113] Examples of nonionic water-soluble comonomers include:

[0114] - (meth)acrylamide,

[0115] - N-vinylacetamide and N-methyl-N-vinylacetamide,

[0116] - N-vinylformamide and N-methyl-N-vinylformamide,

[0117] - maleic anhydride,

[0118] - vinylamine,

[0119] - N-vinyllactams comprising a cyclic alkyl group containing 4 to 9 carbon atoms, such as n-vinylpyrrolidone, N-butyrolactam and N-vinylcaprolactam,

[0120] - vinyl alcohol of formula CH2=CHOH,

[0121] - the water-soluble vinyl monomers of formula (B) below: H2C=CR15 I (B) CO I X2

[0122] in which:

[0123] - R45 is selected from H, -CH3, -C2H5 and -C3H7

[0124] - X2 is chosen from:

[0125] - alkyl ethers of the type -ORi6 where R[6 is a linear or branched hydrocarbon radical, saturated or unsaturated containing 1 to 6 carbons, optionally substituted by a halogen atom (iodine, bromine, chlorine or fluorine); a hydroxyl group (-OH); ether.

[0126] Examples include glycidyl (meth)acrylate, hydroxyethyl methacrylate and ethylene glycol, diethylene glycol or polyalkylene glycol (meth)acrylates.

[0127] Examples of hydrophobic comonomers free of a fat chain include:

[0128] -styrene and its derivatives, such as 4-butylstyrene, α-methylstyrene and vinyltoluene,

[0129] - vinyl acetate of formula CH2=CH-OCOCH3;

[0130] - vinyl ethers of formula CH2=CHOR in which R is a hydrocarbon radical linear or branched, saturated or unsaturated, containing from 1 to 6 carbons;

[0131] - acrylonitrile,

[0132] - caprolactone,

[0133] - vinyl chloride and vinylidene chloride,

[0134] - silicone derivatives, which lead to silicone polymers after polymerization risation, such as methacryloxypropyltris(trimethylsiloxy)silane and silicone methacrylamides,

[0135] - the hydrophobic vinyl monomers of formula (C) below: H2C = CR23 I (C) CO I X3

[0136] in which:

[0137] - R23 is chosen from H, -CH3, -C2H5 and -C3H7

[0138] - X3 is chosen from:

[0139] - alkyl ethers of the type -OR24 in which R24 is a linear hydrocarbon radical or branched, saturated or unsaturated containing from 1 to 6 carbon atoms.

[0140] Examples include methyl methacrylate, ethyl methacrylate, n-butyl (meth)acrylate, tert-butyl (meth)acrylate, cyclohexyl acrylate, isobomyl acrylate and 2-ethylhexyl acrylate.

[0141] The water-soluble or water-dispersible AMPS® polymers of the invention preferably have a molar mass ranging from 50,000 g / mol to 10,000,000 g / mol, preferably from 80,000 g / mol to 8,000,000 g / mol and even better still from 100,000 g / mol to 7,000,000 g / mol.

[0142] Examples of water-soluble or water-dispersible AMPS homopolymers according to the present invention that may be cited include crosslinked or non-crosslinked polymers of sodium acrylamido-2-methylpropanesulfonate, such as the polymer used in the commercial product Simulgel™ 800 (CTFA name: Sodium Po-lyacryloyldimethyltaurate).

[0143] Examples of water-soluble or water-dispersible AMPS copolymers according to the present invention that may be cited include:

[0144] - crosslinked acrylamide / acrylamido-2-methylpropanesulfonate copolymers sodium, such as the copolymer used in the commercial product Sepigel® 305 (CTFA name: Polyacrylamide / Ci3-Ci4 Isoparaffin / Laureth-7) or the copolymer used in the commercial product sold under the trade name Simulgel™ 600 (CTFA name: Acrylamide / Sodium Acryloyldimethyltaurate / Isohexadecane / Polysorbate-80) by the company SEPPIC;

[0145] - copolymers of AMPS and vinylpyrrolidone or vinylformamide, such as the copolymer used in the commercial product sold under the name Aristoflex® by the company Clariant (name CFTA: Ammonium acryloyldimethyltaurate / VP Copolymer) but neutralized with sodium hydroxide or potassium hydroxide;

[0146] - copolymers of AMPS and sodium acrylate such as, for example, co AMPS / sodium acrylate polymer such as the copolymer used in the commercial product sold under the name Simulgel™ EG by the company SEPPIC (CTFA name: Acrylamide / Sodium Acryloyldimethyltaurate / Isohexadecane / Polysorbate-80);

[0147] - copolymers of AMPS and hydroxyethyl acrylate, for example the copolymer of AMPS / hydroxyethyl acrylate such as the copolymer used in the commercial product sold under the name Simulgel™ NS by the company SEPPIC (CTFA name: Hy-droxyethyl acrylate / Sodium Acryloyldimethyltaurate copolymer (and) Squalane (and) Polysorbate-60).

[0148] Preferred polymers are more particularly sodium acrylamido-2-methylpropanesulfonate homopolymers, such as the homopolymer used in the commercial product Sepigel™ 800, and AMPS® / hydroxyethyl acrylate copolymers, such as the copolymer used in the commercial product sold under the name Simulgel NS.

[0149] According to a particularly preferred embodiment of the invention, the AMPS® polymer or copolymer will be used in powder form.

[0150] AMPS-derived polymers may further be those comprising:

[0151] - from 80 mol% to 99 mol% of acidic motifs 2-acrylamido-2-methylpropanesulfonic acid (AMPS®) with the formula (D) below:

[0152] wherein X+ is a proton, an alkali metal cation, an alkaline earth metal cation, or an ammonium ion; and

[0153] - 1% by mol to 20% by mol and preferably 1% by mol to 15% by mol of motifs of formula (E) below: 11 <E) —CH2--(J—; O< CH2CH2 0)n( CH2CH(CH3)O1-R 2

[0154] wherein n and p, independently of each other, denote a number of moles and range from 0 to 30 and preferably from 1 to 20, provided that n + p is less than or equal to 30, preferably less than 25 and even better less than 20; Ri denotes a hydrogen atom or a linear or branched (preferably methyl) Ci-C6 alkyl radical and R2 denotes a linear or branched alkyl comprising m carbon atoms, with m ranging from 6 to 30 and preferably from 10 to 25.

[0155] These polymers according to the invention can be obtained by conventional free radical polymerization processes in the presence of one or more initiators such as, for example, azobisisobutyronitrile (AIBN), azobisdimethylvaleronitrile, 2,2-azobis[2-amidinopropane] hydrochloride (ABAH = 2,2-azoBis-[2-Amidinopropane] hydrochloride), organic peroxides such as dilauryl peroxide, benzoyl peroxide, tert-butyl hydroperoxide, etc., mineral peroxide compounds such as potassium persulfate or ammonium persulfate, or optionally H2O2 in the presence of reducing agents.

[0156] Polymers are obtained in particular by free radical polymerization in a tert-butanol medium from which they precipitate. By using polymerization in tert-butanol, it is possible to obtain a polymer particle size distribution that is particularly favorable to its applications.

[0157] The polymerization reaction can be carried out at a temperature between 0 and 150 °C, preferably between 20 and 100 °C, either at atmospheric pressure or at reduced pressure. It can also be carried out under an inert atmosphere, and preferably under nitrogen.

[0158] It is thus possible to use polymers prepared from 2-acrylamido-2-methylpropanesulfonic acid (AMPS®), or a sodium or ammonium salt thereof, with a (meth)acrylic acid ester and: - of an alcohol in the form CiO- C[8 oxyethylenated with 8 mol of ethylene oxide (Genapol C-080® from Clariant), - of a Cn oxo alcohol oxygenated with 8 mol of ethylene oxide (Genapol UD-080® from Clariant), - of a Cn oxo alcohol oxyethylenated with 7 mol of ethylene oxide (Genapol UD-070® from Clariant), - of an oxyethylenated Ci2-CM alcohol with 7 mol of ethylene oxide (Genapol LA-070® from Clariant), - of an alcohol in the form of Ci2-CM oxygenated with 9 mol of ethylene oxide (Genapol LA-090® from Clariant), - of a C[2-CM] oxyethylenated alcohol with 11 mol of ethylene oxide (Genapol LA-110® from Clariant), - of a Ci6-Ci8 alcohol oxygenated with 8 mol of ethylene oxide (Genapol T-080® from Clariant), - of a Ci6-C[8] oxyethylenated alcohol with 11 mol of ethylene oxide (Genapol T-110® from Clariant), - of a Ci6-C[8]-oxyethylenated alcohol with 15 mol of ethylene oxide (Genapol T-150® from Clariant), - of a Ci6-C[8]-oxyethylenated alcohol with 20 mol of ethylene oxide (Genapol T-200® from Clariant), - of a Ci6-C[8]-oxyethylenated alcohol with 25 mol of ethylene oxide (Genapol T-250® from Clariant), - of a C[8-C22]-oxyethylenated alcohol with 25 mol of ethylene oxide, - of a Ci6-Ci8 isoalcohol oxygenated with 25 mol of ethylene oxide.

[0159] According to a preferred embodiment, the polymer is a copolymer of AMPS® and a Ci6-Ci8 alcohol methacrylate comprising 6 to 25 mol of oxyethylenated groups, obtained from methacrylic acid or a salt of methacrylic acid and a Ci6-Ci8 alcohol oxyethylenated with 6 to 25 mol of ethylene oxide.

[0160] The polymer may also be a copolymer of AMPS® and a Ci2-CM alcohol methacrylate comprising 6 to 25 mol of oxyethylenated groups, obtained from methacrylic acid or a salt of methacrylic acid and a Ci2-Ci4 alcohol oxyethylenated with 6 to 25 mol of ethylene oxide.

[0161] Preferred AMPS®-type polymers according to the present invention include: - the non-crosslinked copolymer obtained from 92.65% by mol of AMPS® and 7.35% by mol of a Ci6-Ci8 alcohol methacrylate comprising 8 oxyethylenated groups (Genapol T-080®), - the non-crosslinked copolymer obtained from 91.5% by mol of AMPS® and 8.5% by mol of a C12-C14 alcohol methacrylate comprising 7 oxyethylenated groups (Genapol LA-070®), - the crosslinked copolymer obtained from 96.45 mol% of AMPS® and 3.55 mol% of a Ci6-Ci8 alcohol methacrylate comprising 25 oxyethylenated groups (Genapol T-250®), the crosslinking agent being tri-methylolpropane triacrylate, - the crosslinked copolymer obtained from AMPS® and a C22 alcohol methacrylate comprising 25 oxyethylenated groups; this polymer is sold under the name Aristoflex HMB® by the company Clariant, - the acrylamide / 2-methyl-2-[(l-oxo-2-propenyl)amino]-1-propanesulfonate sodium copolymer (AMPS®) such as Simulgel 600® in the form of an emulsion containing polysorbate 80 as a surfactant and containing isohexadecane as the oil phase, sold by the company SEPPIC, or in variant Simulgel EG®, Simulgel A® and Simulgel 501® sold by the same company.

[0162] Simulgel 600® is described in particular in document FR 2 785 801. It is more specifically an inverse latex. The polyelectrolyte AMPS® is 2-methyl-2-[(l-oxo-2-propenyl)amino]-l-propanesulfonic acid partially or totally salted in particular in the form of sodium salt or ammonium salt, in a proportion of 30% to 50% in mol in the mixture comprising AMPS® and an acrylamide, itself in a proportion of 50% to 70%.

[0163] For the purposes of the present invention, preferred AMPS®-derived polymers are crosslinked and / or neutralized 2-acrylamido-2-methylpropanesulfonic acid homopolymers, for example poly(2-acrylamido-2-methylpropanesulfonic acid) sold by Clariant under the name Hostacerin AMPS® (CTFA name: ammonium poly-acry Idimethy Itauramide).

[0164] Advantageously, the polymer derived from at least one monomer of 2-acrylamido-2-methylpropanesulfonic acid is present in the composition according to the present invention in an amount ranging from 0.05% by weight to 10% by weight, preferably from 0.08% by weight to 8% by weight, more preferably from 0.1% by weight to 2% by weight, relative to the total weight of the composition. C-glycosides

[0165] According to the first aspect, the composition of the present invention comprises at least one C-glycoside selected from compounds of formula (I):

[0166] in which:

[0167] - R represents a saturated alkyl radical in C1 to C1, in particular in C1 to C4, which can optionally be replaced by at least one radical chosen from OH, COOH or COOR" 2R"2 being a CrC4 saturated alkyl radical

[0168] - S represents a monosaccharide or polysaccharide comprising up to 20 sugar motifs, in particular up to 6 sugar motifs, in the form of pyranose and / or furanose and of the L and / or D series, said monosaccharide or polysaccharide being able to be substituted by a hydroxyl group which is necessarily free and optionally one or more protected amine functional groups, and

[0169] - X represents a radical chosen from the groups -CO-, -CH(OH)-, -CH(NH2)-, - CH(NHCH2CH2CH2OH)-, -CH(NHPh)- and -CH(CH3)- and in particular a radical -CO-, -CH(OH)- or -CH(NH2)- and more particularly a radical -CH(OH)-,

[0170] the S-CH2-X bond represents a C-anomeric bond, which can be α or [3,

[0171] as well as their physiologically acceptable salts, their solvates, such as hydrates and their optical and geometric isomers.

[0172] The C-glycosides used for the implementation of the invention are in particular those for which R designates a linear alkyl radical saturated in C6 Ci, in particular in C4 Ci, preferably in C2 Ci and more preferably, a methyl radical.

[0173] In particular, we can mention, among the alkyl groups suitable for the implementation of the invention, the methyl, ethyl, isopropyl, n-propyl, n-butyl, t-butyl, isobutyl, sec-butyl, pentyl, n-hexyl, cyclopropyl, cyclopentyl or cyclohexyl groups.

[0174] According to one embodiment of the invention, a CC-glycoside corresponding to formula (I) can be used, in which S can represent a monosaccharide or a polysaccharide comprising up to 6 sugar motifs, in the form of pyranose and / or furanose and of L and / or D series, said monosaccharide or polysaccharide having at least one free hydroxyl functional group and / or optionally one or more necessarily protected amine functional groups, X and R otherwise retaining all the above definitions.

[0175] Advantageously, a monosaccharide of the invention may be selected from the following: D-glucose, D-galactose, D-mannose, D-xylose, D-lyxose or L-fucose, L-arabinose, L-rhamnose, D-glucuronic acid, D-galacturonic acid, acid D-iduronic acid, N-acetyl-D-glucosamine or N-acetyl-D-galactosamine and advantageously designates the following elements: D-glucose, D-xylose, N-acetyl-D-glucosamine or L-fucose and in particular D-xylose.

[0176] More particularly, a polysaccharide of the invention comprising up to 6 sugar motifs can be selected from D-maltose, D-lactose, D-cellobiose, D-maltotriose, a disaccharide combining a uronic acid selected from D-iduronic acid or D-glucuronic acid with a hexosamine selected from D-galactosamine, D-glucosamine, N-acetyl-D-galactosamine or N-acetyl-D-glucosamine, an oligosaccharide comprising at least one xylose which can advantageously be selected from xylobiose, methyl-[3-xylobioside, xylotriose, xylotetraose, xylopentaose and xylohexaose, and in particular xylobiose, which is composed of two xylose molecules linked via a 1-4 bond.

[0177] More specifically, S may represent a monosaccharide selected from D-glucose, D-xylose, L-fucose, D-galactose or D-maltose and in particular D-xylose.

[0178] Preferably, a C-glycoside of formula (I) is used, for which:

[0179] - R denotes a linear alkyl radical not substituted in Cr C4, in particular in Cr C2, in particular a methyl radical;

[0180] - S represents a monosaccharide as described above and chosen in particular among D-glucose, D-xylose, N-acetyl-D-glucosamine or L-fucose, and in particular D-xylose;

[0181] - X represents a group chosen from a group -CO-, -CH(OH)- or -CH(NH2) and, preferably, a -CH(OH)- group.

[0182] Acceptable salts of the compounds described in the present invention include conventional non-toxic salts of said compounds, such as those formed from organic or inorganic acids. Examples include salts of inorganic acids such as sulfuric acid and hydrochloric acid. Also included are salts of organic acids, which may comprise one or more carboxylic, sulfonic, or phosphonic acid groups. Examples include propionic acid, acetic acid, terephthalic acid, citric acid, and tartaric acid.

[0183] When the compound of formula (I) comprises an acid group, the neutralization of the acid group(s) may be carried out with an inorganic base, such as LiOH, NaOH, KOH, Ca(OH)2, NH4OH, Mg(OH)2 or Zn(OH)2, or with an organic base, such as a primary, secondary or tertiary alkylamine, for example triethylamine or butylamine. This primary, secondary or tertiary alkylamine may comprise one or more nitrogen and / or oxygen atoms and may therefore comprise, for example, one or more alcohol functional groups; in particular, mention may be made of 2-Amino-2-methylpropanol, triethanolamine, 2-(dimethylamino)propanol, or 2-amino-2-(hydroxymethyl)-1,3-propanediol. Lysine or 3-(dimethylamino)propylamine can also be mentioned.

[0184] Solvates that are acceptable for the compounds described in the present invention include conventional solvates, such as those formed during the final stage of preparation of said compounds due to the presence of solvents. Examples include solvates due to the presence of water or linear or branched alcohols, such as ethanol or isopropanol.

[0185] Of course, according to the invention, a CC-glycoside corresponding to formula (I) can be used alone or in mixture with other C-glycosides and in any proportion.

[0186] A C-glycoside suitable for the invention can in particular be obtained by the synthesis process described in document WO 02 / 051828.

[0187] In particular, by way of non-limiting illustration of C-glycoside compounds that are particularly suitable for the invention, the following compounds may be mentioned:

[0188] - C-[3-D-xylopyranoside-n-propane-2-one,

[0189] - C-a-D-xylopyranoside-n-propane-2-one,

[0190] - C-[3-D-xylopyranoside-2-hydroxypropane,

[0191] - C-a- D-xylopyranoside-2-hydroxypropane,

[0192] - l-(C-[3-D-fucopyranoside)propane-2-one,

[0193] - l-(C-a-D-fucopyranoside)propan-2-one,

[0194] - l-(C-[3-L-fucopyranoside)propane-2-one,

[0195] - l-(C-a-L-fucopyranoside)propane-2-one,

[0196] - l-(C-[3-D-fucopyranoside)-2-hydroxypropane,

[0197] - l-(C-a-D-fucopyranoside)-2-hydroxypropane,

[0198] - l-(C-[3-L-fucopyranoside)-2-hydroxypropane,

[0199] - l-(C-a-L-fucopyranoside)-2-hydroxypropane,

[0200] - l-(C-[3-D-glucopyranosyl)-2-hydroxypropane,

[0201] - l-(C-a-D-glucopyranosyl)-2-hydroxypropane,

[0202] - l-(C-[3-D-galactopyranosyl)-2-hydroxypropane,

[0203] - l-(CaD-galactopyranosyl)-2-hydroxypropane,

[0204] - l-(C-[3-D-fucofuranosyl)propane-2-one,

[0205] - l-(CaD-fucofuranosyl)propane-2-one,

[0206] - l-(C-[3-L-fucofuranosyl)propane-2-one,

[0207] - l-(CaL-fucofuranosyl)propane-2-one,

[0208] - C-[3-D-maltopyranoside-n-propane-2-one,

[0209] - CaD-maltopyranoside-n-propane-2-one,

[0210] - CPD-maltopyranoside-2-hydroxypropane,

[0211] - CaD-maltopyranoside-2-hydroxypropane, their isomers and mixtures thereof.

[0212] According to one embodiment, C-[3-D-xylopyranoside-2-hydroxypropane or CaD-xylopyranoside-2-hydroxypropane and even better C-[3-D-xylopyranoside-2-hydroxypropane can advantageously be used for the preparation of a composition according to the invention.

[0213] According to a specific embodiment, the C-glycoside may be C-[3-D-xylopyranoside-2-hydroxypropane (or hydroxypropyl tetrahydropyrantriol) supplied as a solution containing 75% by weight of active material in water and propylene glycol.

[0214] Advantageously, the C-glycoside is present in the composition in an amount ranging from 3% by weight to 30% by weight, preferably from 5% by weight to 15% by weight, relative to the total weight of the composition. Aqueous phase

[0215] As an oil-in-water emulsion, the cosmetic composition of the present invention comprises a continuous aqueous phase.

[0216] Said aqueous phase comprises water.

[0217] Optionally, the continuous aqueous phase comprises a water-miscible organic solvent (at room temperature at 25 °C) such as glycerin and glycols having from 2 to 20 carbon atoms, preferably from 2 to 10 carbon atoms, and preferably having from 2 to 6 carbon atoms, such as propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, caprylyl glycol, dipropylene glycol, diethylene glycol; and mixtures thereof.

[0218] Advantageously, said aqueous phase is present in an amount between 30% and 95% by weight, preferably between 35% and 90% by weight, better still between 40% and 85% by weight, relative to the total weight of the composition. Fatty phase

[0219] As an oil-in-water emulsion, the composition of the present invention comprises at least one dispersed oil phase.

[0220] This fatty phase comprises at least one oil.

[0221] The oil can be volatile or non-volatile.

[0222] The term "oil" means a non-aqueous compound immiscible in water that is liquid at room temperature (25 °C) and atmospheric pressure (760 mmHg). The expression "non-volatile oil" means an oil that can remain on keratinous materials at room temperature and atmospheric pressure for at least several hours and that, in particular, has a vapor pressure of less than 103 mmHg (0.13 Pa). A non-volatile oil can also be defined as having a evaporation rate such that, under the conditions defined above, the quantity evaporated after 30 minutes is less than 0.07 mg / cm2.

[0223] These oils can be of vegetable, mineral or synthetic origin.

[0224] Said oil may be chosen from hydrocarbon oils or silicone oils.

[0225] The expression "hydrocarbon-based oil" means an oil formed essentially, or even constituted, by carbon and hydrogen atoms, and optionally by O and N atoms, and free from Si and F heteroatoms. Such an oil may contain alcohol, ester, ether, carboxylic acid, amine and / or amide groups.

[0226] The term "silicone oil" means an oil containing at least one silicon atom, in particular containing Si-O groups.

[0227] Preferably, the oil is selected from hydrocarbon-based oils, such as isohexadecane, squalane, caprylic / capric triglyceride, isononyl isononanoate, pentaerythrityl tetraisostearate and silicone oils, such as dimethicone.

[0228] The oily phase may also include a non-oily oily substance, for example butters and waxes, such as butyrospermum parkii butter, cera alba, myristyle myristate, and beeswax, in order to create texture and provide a suitable skin finish.

[0229] Advantageously, the fatty phase is present in the composition of the present invention in an amount in the range of 2% by weight to 40% by weight, better still from 5% by weight to 35% by weight, and even better still from 7% by weight to 30% by weight, relative to the total weight of the composition.

[0230] Alkali metal salts of acrylic acid homopolymer

[0231] The composition according to the present invention may comprise at least one alkali metal salt of acrylic acid homopolymer.

[0232] The alkali metal salt of acrylic acid homopolymer suitable for use in the composition according to the invention is chosen in particular from sodium polyacrylate, potassium polyacrylate and combinations thereof. Sodium polyacrylate is preferably used.

[0233] Acrylic acid homopolymer can advantageously be neutralized to a degree between 5% and 80%.

[0234] As sodium polyacrylate which can be used according to the invention, it is possible to use those marketed under the names Cosmedia SPL® by the company Cognis, or Luvigel®EM marketed by the company BASF, the product marketed by the company Sensient under the trade reference Covacryl MV 60® or under the trade name Cosmedia® by Cognis.

[0235] If present, advantageously, the alkali metal salt of acrylic acid homopolymer is present in an amount ranging from 0.1% by weight to 10% by weight, preferably from 0.2% by weight to 8% by weight, more preferably from 0.3% by weight to 5% by weight, most preferably from 0.3% by weight to 2% by weight, relative to the total weight of the composition. Other active cosmetic ingredients

[0236] The composition of the present invention may include one or more other cosmetic active ingredients in addition to C-glycoside.

[0237] It is easy for a person skilled in the art to adjust the quantity of the additional cosmetic active ingredient on the basis of the end use of the composition according to the present invention. Additional adjuvants or additives

[0238] The composition of the present invention may also include conventional cosmetic adjuvants or additives, for example, perfumes, preservatives and bactericides, pH regulators and mixtures thereof.

[0239] A person skilled in the art can choose the quantity of additional adjuvants or additives so as not to have a negative impact on the final use of the composition according to the present invention.

[0240] According to a particularly preferred embodiment, the present invention provides a composition in the form of an oil-in-water emulsion for skincare and / or makeup of keratinous materials comprising, relative to the total weight of the composition:

[0241] (i) from 1.5% by weight to 7% by weight of at least one structuring agent chosen from the linear and saturated C14-C18 fatty acids;

[0242] (ii) from 0.8% by weight to 12% by weight of at least one surfactant selected from glyceryl stearate, PEG-100 stearate and mixtures thereof;

[0243] (iii) from 0.6% by weight to 3.5% by weight of at least one surfactant selected from glucoside ethers and a C12-C22 fatty alcohol, C14-C22 fatty alcohols, and mixtures thereof;

[0244] (iv) from 0.1% by weight to 2% by weight at least one homopolymer of 2-acrylamido-2-methylpropanesulfonic acid optionally crosslinked and / or neutralized; and

[0245] (iv) from 5% by weight to 30% by weight of at least one C-glycoside selected from C-[3-D-xylopyranoside-2-hydroxypropane or CaD-xylopyranoside-2-hydroxypropane, and a combination thereof,

[0246] in which the weight ratio of the structuring agent chosen from C14-C22 saturated fatty acids to the surfactant chosen from fatty alcohols, alkylglucosides and their combinations is less than 1.8. pharmaceutical form and process

[0247] The composition of the present invention is in the form of an oil-in-water emulsion.

[0248] The composition according to the present invention has a lamellar texture.

[0249] The term "lamellar" means a liquid crystalline structure or a hydrated lamellar phase, crystalline, swollen or not, with planar symmetry, comprising several amphiphilic bilayers arranged in parallel and separated by a liquid medium.

[0250] The composition of the present invention may be, for example, a cream.

[0251] The composition of the present invention can be used for the care and / or the ma shell of keratinous materials, for example skin.

[0252] According to the second aspect, the present invention proposes a non-therapeutic method for the care and / or makeup of keratinous materials, comprising the application of the composition according to the first aspect of the present invention on keratinous materials. EXAMPLES

[0253] The following examples serve to illustrate the present invention without, however, being limiting in nature.

[0254] The main raw materials used, trade names and their suppliers are listed in Table 1.

[0255] [Tables 1] INCI name Trade name Supplier ARACHIDYL ALCOHOL (et) BEHENYL ALCOHOL (et) ARACHIDYL GLUCOSIDE MONTANOV 202 SEPPIC AMMONIUM POLYACRY- LOYLDIMETHYL TAURATE HOSTACERIN AMPS ® CLARIANT STEARIC ACID EDENOR®ST 05MY Emery Oleochemicals Group GLYCERYL STEARATE (et) PEG-100 STEARATE ARLACEL 165 FL UNIQEMA HYDROXYPROPYL TETRA- HYDROPYRANTRIOL MEXORYL SCS NOVEAL BEESWAX CERABEIL LOR BAERLOCHER SODIUM POLYACRYLATE COVACRYL MV60 SENSIENT ISONONYL ISO- NONANOATE Radia 7710 Oleon NV DIMETHICONE XIAMETER(R) PMX-200 SILICONE FLUID 5CS Dow Corning Corporation Inventive Example 1 and Comparative Examples 1-3

[0256] The compositions of inventive examples (El.) 1 and comparative examples (EC.) 1 to 3 were prepared according to the quantities given in Table 2. The quantity of each component is given as a % by weight of the total weight of the composition containing it.

[0257] [Tables2] Components Ex. 1 comp. 2 EC. 1 EC. 2 EC. 3 Stearic acid 2.76 2.12 2.76 2.76 2.76 Palmitic acid 2.29 1.76 2.29 2.29 2.29 Myristic acid 0.16 0.12 0.16 0.16 0.16 Pentaerythrityl tetraisostearate 1 1 1 1 1 Isononyl isononanoate 1 1 1 1 1 Dimethicone 1 0 1 1 1 Beeswax 0 1.1 0 0 1.36 PEG-100 stearate 0.4 0.4 0.4 0.4 0.4 Glyceryl stearate 0.4 0.4 0.4 0.4 0.4 Behenyl alcohol 0.9 0.9 0.6 1.6 0.9 Arachidyl alcohol 1.65 1.65 1.1 1.1 1.65 Arachidyl glucoside 0.45 0.45 0.3 0.3 0.45 Hydroxypropyl tetrahydropyrantriol 10.5 10.5 10.5 10.5 10.5 Sodium polyacrylate 0.6 0.6 0.6 0.6 0.6 Ammonium polyacryloyldimethyl taurate 0.2 0.2 0 0 0 Water QS100 QS100 QS100 QS100 QS100 Fatty acid ratio: (fatty alcohol + glucoside) 1.74 1.33 2.6 1.74 1.74

[0258] The compositions of inventive examples 1-2 are compositions according to the present invention.

[0259] The compositions of comparative examples 1-3 do not include a polymer derived from a monomer of 2-acrylamido-2-methylpropanesulfonic acid.

[0260] Preparation process:

[0261] The compositions listed above were prepared as follows, taking as an example the composition of inventive example 1:

[0262] 1. heating of stearic acid, glyceryl stearate (and) PEG- stearate 100, arachidyl alcohol (and) behenyl alcohol (and) arachidyl glucoside, dimethicone, isononyl isononanoate and pentaerythrityl tetrastearate, at 75-80°C;

[0263] 2. heating the water to 75-80°C.

[0264] 3. Addition of stearic acid, glyceryl stearate (and) PEG-100 stearate, arachidyl alcohol (and) behenyl alcohol (and) arachidyl glucoside with water at high temperature with stirring;

[0265] 4. Addition of sodium polyacrylate and ammonium polyacryloyldimethyl taurate with agitation;

[0266] 5. Addition of hydroxypropyl tetrahydropyrantriol with stirring; and

[0267] 6. cooling of the resulting composition. Assessment Stability

[0268] Stability was assessed as follows.

[0269] Each composition prepared above was stored in two clear glass bottles (100 mL), one being placed in a chamber at room temperature (25°C) and the other in a chamber at 37°C. After 2 months, the appearance of each composition was observed.

[0270] If there is liquid in the space between the composition and the bottle, the composition is considered unstable, otherwise it is stable.

[0271] The results on the stability of each composition prepared above have been summarized in Table 3.

[0272] [Tables3] ELI Properties EI.2 EC. 1 EC. 2 EC. 3 Stability at 37°C Stable Stable Unstable Unstable Unstable Stability at TA(25°C) Stable Stable Unstable Unstable Stable

[0273] It can be seen in Table 3 that the compositions of inventive examples 1-2 are stable both at 37°C and at room temperature (25°C) for two months.

Claims

Demands

1. Composition in the form of an oil-in-water emulsion intended for the care and / or makeup of keratinous materials comprising, relative to the total weight of the composition: (i) from 1.5% by weight to 7% by weight of at least one structuring agent selected from linear and saturated C14-C18 fatty acids; (ii) from 0.8% by weight to 12% by weight of at least one surfactant selected from glyceryl stearate, PEG-100 stearate and mixtures thereof; (iii) from 0.6% by weight to 3.5% by weight of at least one surfactant selected from arachidyl alcohol, behenyl alcohol, oleyl alcohol, arachidyl glucoside and mixtures thereof; (iv) from 0.1% by weight to 2% by weight at least one homopolymer of 2-acrylamido-2-methylpropanesulfonic acid, optionally crosslinked and / or neutralized; and (v) from 5% by weight to 30% by weight of at least one C-glycoside selected from C-[3-D-xylopyranoside-2-hydroxypropane or CaD-xylopyranoside-2-hydroxypropane, and a combination thereof, wherein the weight ratio of the structuring agent (i) to the surfactant (iii) is less than 1.

8.

2. Non-therapeutic method of care and / or makeup of keratinous materials, comprising the application of the composition according to claim 1 on the keratinous materials.