SKIN CARE COMPOSITIONS

Abstract

SKIN CARE COMPOSITIONS The present invention relates to a composition for treating a keratinous material, in particular the skin, comprising: (a) at least one polysaccharide; (b) at least one amphoteric surfactant; (c) at least one co-surfactant. Furthermore, the present invention relates to the use thereof, in particular as an emulsion for providing a transforming sensation to the skin. Figure for abstract: none

Description

Title of the invention: COMPOSITIONS FOR SKIN CARE FIELD OF THE INVENTION

[0001] The present invention relates to a composition for treating a keratinous material, in particular the skin, in particular for providing the skin with a feeling of transformation with good stability. Furthermore, the present invention relates to the use thereof. CONTEXT

[0002] The skin acts as a natural barrier between the internal and external environments and therefore plays an important role in vital biological functions such as protection against mechanical and chemical injury, microorganisms and ultraviolet damage. However, the health and appearance of the skin can deteriorate due to environmental factors, genetic makeup, nutrition and sun exposure.

[0003] The feeling of transformation in conjunction with stability are sought after as one of the most desirable properties in the cosmetic / personal care industry.

[0004] Furthermore, the formulation of environmentally friendly cosmetic products, which are designed and developed with environmental issues in mind, is becoming a major objective in an effort to address global challenges.

[0005] It is therefore essential to offer more sustainable compositions to address these environmental concerns.

[0006] In this context, it is important to develop new cosmetic compositions with a better carbon footprint, in particular by promoting the use of renewable raw materials and / or materials with a good naturalness index and / or materials of natural origin and, more particularly, materials of plant origin while reducing the use of compounds of petrochemical origin.

[0007] As such, consumers desire new and improved compositions that are more durable and can provide personal care / makeup products with an improved transformative feel with good stability. SUMMARY OF DISCLOSURE

[0008] The inventors have discovered that a composition, preferably for the treatment of keratinous materials, in particular the skin, comprising: (a) at least one first polysaccharide; (b) at least one amphoteric surfactant; (c) at least one co-surfactant, selected from a linear fatty alcohol having 14 to 30 carbon atoms; wherein the monomer of the first polysaccharide carries both a main chain and a side chain and has at least one ionic group or at least one ionizable group in the main chain, which have good stability and are capable of providing a superior processing sensation.

[0009] The present invention also relates to the use of the composition according to the present invention for the treatment of keratinous materials, in particular the skin. This use can be manifested as a method for treating keratinous materials, in particular the skin, comprising the steps of application to said keratinous materials.

[0010] The present invention also relates to the use of the composition according to the present invention for preparing a cosmetic product for treating keratinous materials, in particular the skin.

[0011] Preferably, the composition according to the present invention is in the form of a liquid emulsion, for example, water-in-oil (W / O) emulsion, oil-in-water (O / W) emulsion, oil-in-water-in-oil (O / W / O) emulsion, water-in-oil-in-water (W / O / W) emulsion, comprising an aqueous phase and an oily phase, optionally further comprising an acceptable active agent or the like.

[0012] Other characteristics and advantages of the present invention will appear more clearly on reading the description and examples which follow. DETAILED DESCRIPTION OF THE DISCLOSURE

[0013] As used herein, the term "ionizable group" means any group which, either by its intrinsic chemical nature or depending on the medium and / or the pH of the medium in which it is present, can be in ionic form.

[0014] By "sensation of transformation" is meant the following phenomenon: the product (for example, in the form of a gel or an emulsion) which may even be thick, is transformed into a fluid or even into water upon application to the skin, as if it were on the skin. During this transformation, an aqueous film is visible (visible water droplets). First polysaccharides

[0015] The composition according to the invention comprises at least one first polysaccharide.

[0016] The first polysaccharide is a polysaccharide, wherein its monomer carries both a main chain and a side chain and has at least one ionic group or at least one ionizable group in the main chain, wherein the first polysaccharide has the following formula (I):

[0017] (I)

[0018] in which • R represents a radical chosen from rhamnose, mannose, galactose, arabinose, xylose, fucose, or • M belongs to an ionic group or an ionizable group, preferably represents a counterion derived from an alkali metal or an alkaline earth metal, or a counterion derived from an inorganic ammonium or an organic amine; preferably, M represents a counterion selected from a sodium, potassium, calcium, magnesium, ammonium ion or a counterion derived from an organic amine. • n represents at least 200, preferably at least 1000, in particular at least 3000, or less than 20,000, in particular less than 10,000, or from 500 to 10,000, in particular from 1000 to 7000.

[0019] Preferably, the first polysaccharide is selected from the following polysaccharides: diutan gum, welan gum, and mixtures thereof; preferably, diutan gum.

[0020] Preferably, the first polysaccharide is present in an amount ranging from about 0.01% by weight to about 5% by weight, preferably from about 0.05% by weight to about 3% by weight, or from about 0.08% by weight to about 1% by weight, based on the total weight of the composition. Amphoteric Surfactants

[0021] The composition according to the invention comprises at least one amphoteric surfactant.

[0022] For the purposes of the present invention, the term "amphoteric surfactants" is intended to encompass surfactants conventionally referred to as both "amphoteric surfactant" and "zwitterionic surfactant".

[0023] Preferably, the amphoteric surfactants are chosen from (C8-C20) alkyl betaines, (C8-C20) alkylamido (C1-C6) alkyl betaines, such as cocamidopro-pylbetaine, sulfobetaines (also called sultaines) such as (C8-C20) al-kylsulfobetaines, (C8-C20) alkylamido (C1-C6) alkylsulfobetaines, amino acids such as glycine, (C8-C20) alkyl polyaminocarboxylates, (C8-C20) al-kylamphoacetates, (C8-C20) alkylamphodiacetates, phospholipids such as lecithins, hydrogenated lecithins, salts thereof and mixtures thereof. these.

[0024] More preferably, the amphoteric surfactants are chosen from phospholipids such as lecithins, hydrogenated lecithins, salts thereof, derivatives thereof and mixtures thereof.

[0025] As (C8-C20) alkylbetaines, mention may in particular be made of cocobetaine such as the product marketed under the name DEHYTON by Cognis, laurylbetaine such as the product marketed under the name GENAGEN by Clariant, oxyethylene laurylbetaine (10 EO), such as the product marketed under the name LAURYLETHER (10 EO) by Shin Nihon Rica, oxyethylene stearylbetaine (10 EO) such as the product marketed under the name STEARYLETHER (10 EO) by Shin Nihon Rica.

[0026] Among the (C8-C20) alkylamido (C1-C6) alkylbetaines, we can for example mention cocamidopropyl betaine such as the products marketed under the name LEBON 2000 by Sanyo, under the name EMPIGEN by Albright & Wilson, under the names Tego Betain F 50 and CK D by EVONIK GOLDSCHMIDT, or those marketed in the form of a mixture with glyceryl laurate such as the commercial references Tego Betain HS or Antil HS60 from EVONIK GOLDSCHMIDT, lauramidopropyl betaine such as the product marketed under the name REWOTERIC by Witco.

[0027] As sultaines, mention may be made of (C8-C20) alkylsulfobetaines; (C8-C20) alkylamido (C1-C6) alkyl sulfobetaines, (C8-C20) alkylamido (C1-C6) alkyl hydroxyl sulfobetaines such as cocoyl-amidopropylhydroxy-sulfobetaine such as that marketed under the name CROSULTAIN by Croda.

[0028] As (C8-C20) alkyl polyaminocarboxylates (APAC), mention may be made of sodium cocoylpolyaminocarboxylate, such as that marketed under the name AMPHOLAK 7 and AMPHOLAK 7 by AkzoNobel, sodium stearylpolyamidocarboxylate such as that marketed under the name AMPHOLAK 7 TX / C by AkzoNobel, sodium carboxymethyloleylpolypropylamine, such as that marketed under the name AMPHOLAK by AkzoNobel.

[0029] As C8-C20 alkyldiamphoacetates, one can for example mention N-cocoyl-N-carboxymethoxyethyl-N-carboxymethyl-ethylediamine of N-disodium (CTFA name: disodium cocamphodiacetate) as the product marketed under the name MIRANOL C2M CONCENTRE by Rhodia Chimie, and N-cocoyl-N-hydroxyethyl-N-carboxymethyl-ethylediamine of N-sodium (CTFA name: sodium cocamphoacetate) as sold by Evonik Goldschmidt under the name Rewoteric AM C.

[0030] As C8-C20 alkylamphodiacetates, mention may be made of disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caproamphodiacetate, disodium ca-pryloamphodiacetate, disodium cocoamphodipropionate, disodium lauroampho-dipropionate, disodium caproamphodipropionate, disodium capryloamphodi-propionate, lauroamphodipropionic acid and cocoamphodipro-pionic acid. Examples that may be mentioned include cocoamphodiacetate sold by the company Rhodia under the trade name C2M Concentrate.

[0031] Among the phospholipids, mention may be made of lecithins such as the product marketed by the NIKKOL group (Lecinol series) or other lecithins marketed by CARGIL / LUCAS MEYER (the EMULMETIKS family of EMULFLUIDS).

[0032] In particular, lecithin and a lecithin derivative can be preferably used. Among others, hydrogenated lecithin can be used advantageously.

[0033] The amphoteric surfactant is preferably present in an amount ranging from about 0.05% by weight to about 10% by weight, preferably from about 0.08% by weight to about 5% by weight, or from about 0.1% by weight to about 2% by weight, based on the total weight of the composition. Co-surfactant

[0034] The composition according to the present invention comprises at least one co-surfactant chosen from linear fatty alcohols having 14 to 30 carbon atoms.

[0035] Among others, the co-surfactant in the composition according to the present invention has a regular long carbon chain structure, for example, linear C14-C30 fatty alcohol.

[0036] Preferably, the co-surfactant is a linear, saturated, C14-C30 fatty alcohol.

[0037] Preferably, the linear, saturated, C14-C30 fatty alcohol is chosen from linear, saturated, C14-C28 fatty alcohols, preferably linear, saturated, C16-C28 fatty alcohols, more preferably from linear, saturated, C18-C26 fatty alcohols, or even from linear, saturated, C20-C22 fatty alcohols or mixtures thereof.

[0038] More preferably, the co-surfactant is chosen from linear, saturated, C14-C28 fatty alcohols, preferably linear, saturated, C16-C28 fatty alcohols, more preferably from linear, saturated, C18-C26 fatty alcohols, or even from linear, saturated, C20-C22 fatty alcohols or mixtures thereof.

[0039] The linear, saturated, C14-C28 fatty alcohol or alcohols that are used in the context of the present invention are in particular C14 fatty alcohol or alcohols, for example myristyl alcohol (C14), C16 fatty alcohol or alcohols, for example cetyl alcohol or hexadecanol (C16), C18 fatty alcohol or alcohols, for example stearyl alcohol or octadecanol (Cl8), C20 fatty alcohol or alcohols, for example arachidyl alcohol (C20), or C22 fatty alcohol or alcohols, for example behenyl alcohol (C22), or mixtures thereof.

[0040] Preferably, the co-surfactant according to the invention is chosen from C20 fatty alcohol or alcohols, for example arachidyl alcohol (C20), or C22 fatty alcohol or alcohols, for example behenyl alcohol (C22), or mixtures thereof.

[0041] The co-surfactant is present in an amount ranging from about 0.1% by weight to about 10% by weight, preferably from about 0.5% by weight to about 8% by weight, or from about 1% by weight to about 5% by weight, based on the total weight of the composition.

[0042] Preferably, the co-surfactant is present in an amount ranging from about 0.1% by weight to about 10% by weight, preferably from about 2% by weight to about 5% by weight, or from about 1% by weight to about 3% by weight, based on the total weight of the composition.

[0043] Preferably, the weight ratio of amphoteric surfactant to co-surfactant is from about 1:1 to about 1:10, preferably from about 1:1 to about 1:8, even from about 1:1 to about 1:7, in particular from about 1:1.5 to about 1:6, advantageously from about 1:2 to about 1:6. Second polysaccharide

[0044] The present composition may further comprise a second polysaccharide different from the first polysaccharide.

[0045] Preferably, the second polysaccharide is a natural polysaccharide.

[0046] In general, natural polysaccharide refers to a naturally obtainable polysaccharide. For the purposes of the present invention, however, the term "natural polysaccharide" is intended to also encompass "naturally occurring polysaccharide," which refers to a polysaccharide obtained by modification of a naturally obtainable polysaccharide.

[0047] In general, the second polysaccharide suitable for use in the present invention may be homopolysaccharides such as fructans, glucans, galactans and mannans or heteropolysaccharides such as hemicellulose, and mixtures thereof.

[0048] Similarly, the second polysaccharide may be linear polysaccharides such as pullulan or branched polysaccharides such as gum arabic and amylopectin, or mixed polysaccharides such as starch.

[0049] Preferably, the second polysaccharide is selected from those produced by microorganisms; polysaccharides isolated from algae, and polysaccharides from higher plants, such as homogeneous polysaccharides, in particular celluloses and derivatives thereof or fructans, heterogeneous polysaccharides such as gum arabic, galactomannans, glucomannans and derivatives thereof; and mixtures thereof.

[0050] More preferably, the second polysaccharide is chosen from homogeneous polysaccharides, in particular celluloses and derivatives thereof or fructosans, heterogeneous polysaccharides such as gum arabic, galactomannans, glucomannans and derivatives thereof; and mixtures thereof.

[0051] As an example of the second polysaccharide, mention may be made of fructans, gellans, glucans, amylose, amylopectin, glycogen, pullulan, dextrans, celluloses and derivatives thereof, such as methylcelluloses, hydroxyalkylcelluloses, ethylhydroxyethylcelluloses and carboxymethylcelluloses, mannans, xylans, lignins, arabans, galactans, galacturonans, chitin, chitosans, glucuronoxylans, arabinoxylans, xyloglucans, glucomannans, arabinogalactans, glycosaminoglucans, gum arabic, gum tragacanth, gum ghatti, locust bean gums, galactomannans such as guar gums and non-ionic derivatives thereof, in particular hydroxypropyl guar, and ionic derivatives thereof, biopolysaccharide gums of microbial origin, in particular sclerotium gum, for example scleroglucan, or xanthan gum,mucopolysaccharides, and in particular chondroitin sulfates, and mixtures thereof. These second polysaccharides may be chemically modified, in particular by urea or urethane groups or by a hydrolysis, oxidation, esterification, etherification, sulfation, phosphation, amination, amidation or alkylation reaction, or by several of these modifications.

[0052] The derivatives obtained can be anionic, cationic, amphoteric.

[0053] These second polysaccharides which are suitable for use in the present invention can be distinguished according to whether they are derived from microorganisms, algae or higher plants, and are detailed below.

[0054] Polysaccharides produced by microorganisms

[0055] Dextran and dextran sulfate

[0056] Dextran is a neutral polysaccharide bearing no charged groups, which is biologically inert, prepared by fermentation of beet sugar containing only hydroxyl groups. It is possible to obtain dextran fractions of different molecular weights from native dextran by hydrolysis and purification. Dextran can in particular be in the form of dextran sulfate.

[0057] Dextran is represented, for example, by the products sold under the name Dextran or Dextran T by the company Pharmacosmos, or under the name Dextran 40 Powder or Dextran 70 Powder by the company Meito Sangyo Co. Dextran sulfate is sold by the company PK Chemical A / S under the name Dextran sulfate.

[0058] Succinoglycan

[0059] Succinoglycan is a high molecular weight extracellular polymer produced by bacterial fermentation, consisting of repeating octasaccharide units (repeating 8 sugars). Succinoglycans are for example sold under the name Rheozan by the company Rhodia.

[0060] Polysaccharides isolated from algae

[0061] Furcellarane

[0062] Furcellaran is commercially obtained from the red algae Furcellaria fasztigiata. Furcellaran is, for example, produced by the company Est-Agar.

[0063] Polysaccharides of plant origin

[0064] This category of polysaccharides can be divided into homogeneous polysaccharides (a single species of saccharide) and heterogeneous polysaccharides composed of several types of saccharides. a. Homogeneous polysaccharides and derivatives thereof

[0065] The polysaccharide according to the present invention may be chosen from celluloses and its derivatives or fructans.

[0066] Cellulose and derivatives

[0067] The polysaccharide according to the present invention may also be a cellulose or a derivative thereof, in particular cellulose ethers or esters (for example, methylcellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxymethylpropylcellulose, cellulose acetate, cellulose nitrate, nitrocellulose).

[0068] The present invention may also contain a cellulose-based associative polymer.

[0069] According to the present invention, the term "cellulose-based associative polymer" designates any polysaccharide compound carrying in its structure linear sequences of anhydroglucopyranose (AGU) residues linked together by [3 (1, 4] bonds. The repeating unit is the cellobiose dimer. The AGUs are in chair conformation and carry 3 hydroxyl functions: 2 secondary alcohols (in positions 2 and 3) and a primary alcohol (in position 6). The polymers thus formed combine by intermolecular bonds of the hydrogen bond type, thus giving the cellulose a fibrous structure (approximately 1500 molecules per fiber).

[0070] The degree of polymerization varies considerably depending on the origin of the cellulose; its value can range from a few hundred to several tens of thousands.

[0071] Cellulose hydroxyl groups can react partially or completely with various chemical reagents to give cellulose derivatives having intrinsic properties. Cellulose derivatives can be anionic, cationic, amphoteric or non-ionic. Among these derivatives, cellulose ethers, cellulose esters and cellulose ester ethers are distinguished.

[0072] Among the non-ionic cellulose ethers, mention may be made of alkylcelluloses such as methylcelluloses and ethylcelluloses; hydroxyalkylcelluloses, such as hydroxymethylcelluloses, hydroxyethylcelluloses and hydroxypropylcelluloses; and mixed hydroxyalkylcelluloses such as hydroxypropylmethylcelluloses, hydroxyethylmethylcelluloses, hydroxyethylethylcelluloses and hydroxybutylmethylcelluloses.

[0073] Among the anionic cellulose ethers, mention may be made of carboxyalkyl celluloses and their salts. For example, mention may be made of carboxymethylcelluloses, carboxymethylcelluloses and carboxymethylhydroxyethylcelluloses and their sodium salts.

[0074] Among the cationic cellulose ethers, mention may be made of quaternized, crosslinked or non-crosslinked hydroxyethylcelluloses.

[0075] The quaternizing agent may in particular be glycidyltrimethylammonium chloride or a fatty amine such as laurylamine or stearylamine. Another cationic cellulose ether that may be mentioned is hydroxyethylcellulosehydroxypropyltrimethylammonium.

[0076] The quaternized cellulose derivatives are in particular: • quaternized celluloses modified by groups comprising at least one fatty chain, such as alkyl, arylalkyl or alkylaryl groups comprising at least 8 carbon atoms, or mixtures thereof, • quaternized hydroxyethylcelluloses modified by groups comprising at least one fatty chain, such as alkyl, arylalkyl or alkylaryl groups comprising at least 8 carbon atoms or mixtures thereof.

[0077] The alkyl radicals supported by the above quaternized celluloses or hydroxyethylcelluloses preferably contain from 8 to 30 carbon atoms. The aryl radicals preferably denote phenyl, benzyl, naphthyl or anthryl groups.

[0078] Examples of quaternized alkylhydroxyethylcelluloses containing C8-30 fatty chains include the products Quatrisoft LM 200, Quatrisoft LM-X 529-18-A, Quatrisoft LM-X 529-18B (C12 alkyl) and Quatrisoft LM-X 529-8 (C18 alkyl) sold by the company Amerchol and the products Crodacel QM, Crodacel QL (C12 alkyl) and Crodacel QS (C18 alkyl) sold by Croda Company.

[0079] Among the cellulose derivatives, we can also mention: • celluloses modified by groups comprising at least one fatty chain, for example hydroxyethylcelluloses modified by groups comprising at least one fatty chain, such as alkyl groups, in particular C8-22 arylalkyl and alkylaryl groups, such as Natrosol Plus Grade 330 CS (Cl6 alkyls) sold by the company Aqualon, and • celluloses modified with polyalkylene glycol alkylphenyl ether groups, such as the product Amercell Polymer HM-1500 (nonylphenyl polyethylene glycol ether (15)) sold by the company Amerchol.

[0080] Among the cellulose esters are inorganic cellulose esters (cellulose nitrates, sulfates, phosphates, etc.), organic cellulose esters (cellulose monoacetates, triacetates, amidopropionates, acetobutyrates, acetopropionates and acetotrimellitates, etc.) and mixed organic / inorganic cellulose esters, such as cellulose acetobutyrate sulfates and cellulose acetopropionate sulfates. Among the cellulose ester ethers, mention may be made of hydroxypropylmethylcellulose phthalates and ethylcellulose sulfates.

[0081] The cellulose-based associative polymer of the present invention may be selected from unsubstituted celluloses and substituted celluloses. The celluloses and derivatives are represented, for example, by the products sold under the name Cekol (carboxymethylcellulose) by the company Noviant (CP-Kelco), under the name Akucell AF (sodium carboxymethylcellulose) by the company Akzo Nobel, under the name Me-thocelTM (cellulose ethers) and EthocelTM (ethylcellulose) by the company Dow, and under the names (carboxymethylcellulose and sodium carboxymethylcellulose), (methylcellulose), BlanoseTM (carboxymethylcellulose), (methylcellulose, hydroxypropylmethylcellulose), (hydroxypropylcellulose), (cetylhydroxyethylcellulose) and CS (hydroxyethylcellulose) by the company Hercules Aqualon.

[0082] Fructosans

[0083] The polysaccharide according to the present invention may in particular be a fructan chosen from rinulin and derivatives thereof (in particular dicarboxy and carboxymethyl inulins).

[0084] Fructans or fructosans are oligosaccharides or polysaccharides comprising a sequence of anhydrofructose units optionally combined with several residues of saccharides other than fructose. Fructans may be linear or branched. Fructans may be products obtained directly from a plant or microbial source or, alternatively, products whose chain length has been modified (increased or decreased) by fractionation, synthesis or hydrolysis, in particular enzymatic. Fructans generally have a degree of polymerization from 2 to about 1000 and preferably from 2 to about 60.

[0085] There are three groups of fructans. The first group corresponds to products whose fructose units are largely linked by [3 (2, 1)] bonds. These are essentially linear fructans such as inulins.

[0086] The second group also corresponds to linear fructoses, but the fructose units are essentially linked by [3 (2, 6)] bonds. These products are levans.

[0087] The third group corresponds to mixed fructans, i.e. containing sequences [3 (2, 6) and [3 (2, 1). These are essentially branched fructans, like graminans.

[0088] The preferred fructans in the compositions according to the present invention are inulins. Inulin can be obtained, for example, from chicory, dahlia or Jerusalem artichoke, preferably from chicory.

[0089] In particular, the polysaccharide, especially inulin, has a degree of polymerization of from 2 to about 1000 and preferably from 2 to about 60, and a degree of substitution of less than 2 based on a fructose unit.

[0090] The inulin used for the present invention is represented, for example, by the products sold under the name inulin BeneoTM by the company Orafti, and under the name by the company Sensus.

[0091] b) Heterogeneous polysaccharides and derivatives thereof

[0092] The polysaccharides which can be used according to the present invention can be gums, for example cassia gum, karaya gum, konjac gum, tragacanth gum, tara gum, acacia gum or gum arabic.

[0093] Gum arabic

[0094] Gum arabic is a highly branched acidic polysaccharide which is in the form of mixtures of potassium, magnesium and calcium salts. The monomeric components of the free acid (arabic acid) are D-galactose, L-arabinose, L-rhamnose and D-glucuronic acid.

[0095] Galactomannans (guar, carob, fennel, tara gum) and derivatives (guar phosphate, hydroxypropyl guar, etc.)

[0096] Galactomannans are non-ionic polysaccharides extracted from the endosperm of legume seeds, of which they constitute the storage carbohydrate.

[0097] Galactomannans are macromolecules consisting of a main chain of [3(1,4)-linked D-mannopyranose units, bearing side branches consisting of a single D-galactopyranose unit linked by an α(1,6)-linkage to the main chain. The various galactomannans are differentiated, on the one hand, by the proportion of α-D-galactopyranose units present in the polymer, and, on the other hand, by significant differences in terms of the distribution of galactose units along the mannose chain.

[0098] The mannose / galactose (M / G) ratio is approximately 2 for guar gum, 3 for tara gum and 4 for locust bean gum.

[0099] Guar

[0100] Guar gum is characterized by a mannose / galactose ratio of the order of 2 / 1. The galactose group is regularly distributed along the mannose chain.

[0101] The guar gums that can be used according to the present invention can be non-ionic, cationic or anionic. According to the present invention, chemically modified or unmodified non-ionic guar gums can be used.

[0102] Unmodified non-ionic guar gums are, for example, the products sold under the names Vidogum GH, Vidogum G and Vidocrem by the company Unipektin and under the name Jaguar by the company Rhodia, under the name Guar by the company Danisco, under the name ViscogumTM by the company Cargill, and under the name guar gum by the company Aqualon.

[0103] The hydrolyzed non-ionic guar gums which can be used according to the present invention are represented, for example, by the products sold under the name by the company Danisco.

[0104] The modified non-ionic guar gums which can be used according to the present invention are preferably modified with C1-6 hydroxyalkyl groups, among which there may be mentioned, for example, hydroxymethyl, hydroxyethyl, hydroxypropyl and hydroxybutyl groups.

[0105] Such non-ionic guar gums optionally modified with hydroxyalkyl groups are sold, for example, under the trade names Jaguar HP 60, Jaguar HP 105 and Jaguar HP 120 (hydroxypropyl guar) by the company Rhodia or under the name HP (hydroxypropyl guar) by the company Aqualon.

[0106] The cationic galactomannan gums preferably have a cationic charge density of less than or equal to 1.5 meq. / g, more particularly between 0.1 and 1 meq. / g. The charge density can be determined by the Kjeldahl method. It generally corresponds to a pH of the order of 3 to 9.

[0107] Generally, for the purposes of the present invention, the term "cationic galactomannan gum" refers to any galactomannan gum containing cationic groups and / or groups that can be ionized into cationic groups.

[0108] Preferred cationic groups are selected from those comprising primary, secondary, tertiary and / or quaternary amine groups.

[0109] The cationic galactomannan gums used generally have a weight average molecular mass between approximately 500 and 5 x 106 and preferably between approximately 103 and 3 x 106.

[0110] Cationic galactomannan gums which can be used according to the present invention are, for example, gums comprising cationic trialkylammonium groups (C1-4). Preferably, 2% to 30% by number of the hydroxyl functions of these gums carry cationic trialkylammonium groups.

[0111] Among these trialkylammonium groups, mention may be made in particular of the trimethylammonium and triethylammonium groups.

[0112] Even more preferably, these groups represent from 5% to 20% by weight relative to the total weight of the modified galactomannan gum.

[0113] According to the present invention, the cationic galactomannan gum is preferably a guar gum comprising hydroxypropyltrimethylammonium groups, i.e. a guar gum modified, for example, with 2,3-epoxypropyltrimethylammonium chloride.

[0114] These galactomannan gums, in particular guar gums modified with cationic groups, are products already known as such and are, for example, described in US patents 3,589,578 and US 4,031,307.

[0115] The anionic guar gums which can be used according to the present invention are polymers comprising groups derived from carboxylic, sulfonic, sulfenic, phosphoric, phosphonic or pyruvic acid. Preferably, the anionic group is a carboxylic acid group. The anionic group can also be in the form of an acid salt, in particular a sodium, calcium, lithium or potassium salt.

[0116] The anionic guar gums which can be used according to the present invention are preferably carboxymethyl guar derivatives (carboxymethyl guar or carboxymethyl hydroxypropyl guar).

[0117] Carob

[0118] Locust bean gum is extracted from the seeds of the carob tree (Ceratonia siliqua).

[0119] Unmodified locust bean gum which can be used in the present invention is sold, for example, under the name ViscogumTM by the Cargill company, under the name Vidogum L by the Unipektin company and under the name LBG by the Danisco company.

[0120] Chemically modified locust bean gums that can be used in the present invention can be represented, for example, by the cationic locust beans sold under the name Catinal CLB (locust bean hydroxypropyltrimonium chloride) by the company Toho.

[0121] Tara gum

[0122] The tara gum which can be used in the context of the present invention is sold, for example, under the name Vidogum SP by the company Unipektin.

[0123] Furthermore, agars are galactose polysaccharides contained in the cell wall of some of these species of red algae (Rhodophyceae). They are formed from a polymer group whose basic skeleton is a [3(1,3) D- galactopyranose and an α(1,4)L 3-6 anhydrogalactose chain, with these motifs repeating regularly and alternately. Differences within the agar family are due to the presence or absence of solvated methyl or carboxyethyl groups. These hybrid structures are generally present in varying percentages, depending on the algal species and the harvest season.

[0124] Agar-agar is a mixture of polysaccharides (agarose and agaropectin) of high molecular mass, between 40,000 and 300,000 g. mol-1. It is obtained by manufacturing algae extraction liquors, generally by autoclaving, and by treating these liquors which comprise approximately 2% agar-agar, so as to extract the latter.

[0125] Agar is produced, for example, by the B&V Agar Producers group under the names Gold Agar, Agarite and Grand Agar by the company Hispanagar, and under the names Agar-Agar, QSA (Quick Soluble Agar) and Puragar by the company Setexam.

[0126] Preferably, the second polysaccharide is selected from carrageenan, xanthan gum, gellan gum, pectin, chitosan and mixtures thereof; more preferably, selected from gellan gum.

[0127] Xanthan gum is a heteropolysaccharide produced on an industrial scale by aerobic fermentation of the bacterium Xanthomonas campestris. Its structure, like cellulose, is composed of a backbone of [3-D-glucose linked in [3(1,4)] mode. One of the two glucose molecules has a trisaccharide side chain composed of α-D-mannose, [3-D-glucuronic acid and terminal [3-D-mannose. The internal mannose residues are usually acetylated on carbon 6. About 30% of the terminal mannose residues have pyruvate groups linked in chelated form between carbon 4 and carbon 6. The charged glucuronic acid and pyruvic acid can be ionized and thus result in the anionic nature of xanthan (negative charge up to pH 1). The content of pyruvate residues and acetate residues varies depending on the species, fermentation process, post-fermentation conditions and purification steps.These groups can be neutralized in commercial products with Na+, K+ or Ca2+ ions (Satia, 1986). The neutralized form can be converted to the acid form by ion exchange or dialysis using an acid solution. Xanthan gum has a viscosity of 0.6 to 1.65 Pa.s (Brookfield viscometer, type LVT, measured at 60 rpm at 25 °C) for an aqueous composition comprising a molecular weight of 1,000,000 to 50,000,000 and 1% xanthan gum. Xanthan gum, for example, products sold under the trade name Rhodicare by Rhodia Chimie, products sold by Cargill Texturizing Solutions, Inc. under the trade name Satiaxane™ (food, cosmetic and pharmaceutical industry), ADM, Inc. under the trade name Novaxan™ and products sold by CP-Kelco under the trade names Kelzan® and Keltrol®.

[0128] Gellan gum is an anionic linear heteropolysaccharide based on oligoside units composed of 4 saccharides (tetra-oside). D-glucose, L-rhamnose and D-glucuronic acid in proportions 2:1:1 are present in gellan gum as monomeric elements. It is sold, for example, under the name Kelcogel CG LA by the company CP Kelco.

[0129] Pectins are linear polymers of aD-galacturonic acid (at least 65%) linked in positions 1 and 4, with a certain proportion of carboxylic groups esterified with a methanol group. About 20% of the sugars constituting the pectin molecule are neutral sugars (L-rhamnose, D-glucose, D-galactose, L-arabinose, D-xylose). L-rhamnose residues are found in all pectins, incorporated into the main chain at positions 1,2. Uronic acid molecules carry carboxyl functions. This function gives pectins the ability to exchange ions, when they are in the COO form. Divalent ions (especially calcium) have the ability to form ionic bridges between two carboxyl groups of two different pectin molecules. In nature, a certain proportion of carboxylic groups are esterified with a methanol group.The natural degree of esterification of a pectin can be between 70% (apple, lemon) and 10% (strawberry) depending on the source used. By using pectins with a high degree of esterification, it is possible to hydrolyze the -COOCH3 groups to obtain weakly esterified pectins. Depending on the proportion of methylated or unmethylated monomers, the chain is therefore more or less acidic. HM (high methoxy) pectins are therefore defined as having a degree of esterification greater than 50%, and LM (low methoxy) pectins are defined as having a degree of esterification less than 50%. In the case of amidated pectins, the -OCH3 group is substituted by an -NH2 group. Pectins are sold by Cargill under the name Unipectine™, by CP-Kelco under the name Genu, and by Danisco under the name Grinsted Pectin.

[0130] Carrageenans are anionic polysaccharides constituting the cell walls of various red algae (Rhodophyceae) belonging to the families Gigartinaceae, Hypneaceae, Furcellariaceae and Polyideaceae. They are generally obtained by hot aqueous extraction from natural strains of said algae. These linear polymers, formed by disaccharide units, are composed of two D-galactopyranose units linked alternately by α(1,3) and [3(1,4)] bonds. They are highly sulfated polysaccharides (20 to 50%) and the α-D-galactopyranosyl residues can be in 3,6-anhydro form. Depending on the number and position of sulfate ester groups on the repeating disaccharide of the molecule, several types of carrageenans are distinguished, namely: kappa-carrageenans, which carry one sulfate ester group, iota-carrageenans, which carry two sulfate ester groups, sulfate, and lambda-carrageenans which carry three sulfate ester groups. Carrageenans are composed essentially of potassium, sodium, magnesium, triethanolamine and / or calcium salts of polysaccharide sulfate esters. Carrageenans are sold in particular by the company SEPPIC under the name Solagum®, by the company Gelymar under the names Carragel®, Carralact® and Carrasol®, by the company Cargill under the names Satiagel™ and Satiagum™, and by the company CP-Kelco under the names Genulacta®, Genugel® and Genuvisco®.

[0131] Chitosan is a linear polysaccharide composed of randomly distributed [3-(1—>4)-linked D-glucosamine (deacetylated unit) and N-acetyl-D-glucosamine (acetylated unit). It is prepared by treating the chitin shells of shrimp and other crustaceans with an alkaline substance, such as sodium hydroxide.

[0132] Preferably, the second polysaccharide is present in an amount ranging from about 0.01 wt% to about 5 wt%, preferably from about 0.05 wt% to about 3 wt%, or from about 0.08 wt% to about 1 wt%, based on the total weight of the composition.

[0133] Preferably, the weight ratio of the first polysaccharide to the second polysaccharide is from about 0.05 to 4, preferably from about 0.1 to 4, advantageously from about 0.1 to 2, in particular from about 1:1. Salts

[0134] Furthermore, the present composition used in the present invention may further comprise a salt, for example a salt obtained by an acid and / or a base.

[0135] For example, the acid may be selected from citric acid, maleic acid, acetic acid, salicylic acid, lactic acid, glycolic acid, phytic acid, tartaric acid, malic acid, fumaric acid and the like, and mixtures thereof; bases such as sodium and calcium hydroxide, sodium and calcium phosphate, such as monosodium phosphate or disodium phosphate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, sodium hydroxide, potassium hydroxide triethylamine and the like, and mixtures thereof.

[0136] Advantageously, when the present composition used in the present invention comprises a first polysaccharide and the salt component, the present composition has a further improved transformation sensation.

[0137] Preferably, the salt is present in an amount ranging from about 0.5 wt% to about 15 wt%, preferably from about 2 wt% to about 12 wt%, or from about 4 wt% to about 10 wt%, based on the total weight of the composition. Oily phase

[0138] Preferably, the composition according to the invention comprises an oily phase.

[0139] The oily phase of the composition according to the invention may comprise fatty substances of any kind and of appropriate contents which are known to those skilled in the art.

[0140] The term "fatty substance" designates an organic compound insoluble in water at 25°C and at atmospheric pressure (1.013 x 105Pa) (solubility less than 5% by weight, and preferably less than 1% by weight, even more preferably less than 0.1% by weight).

[0141] Preferably, the fatty substances have in their structure at least one hydrocarbon chain including at least 6 carbon atoms and / or a sequence of at least two siloxane groups. In addition, the fatty substances are generally soluble in organic solvents under the same temperature and pressure conditions, for example, chloroform, dichloromethane, carbon tetrachloride, ethanol, benzene, toluene, tetrahydrofuran (THF), liquid petroleum jelly or decamethyl cyclopentasiloxane.

[0142] Preferably, the fatty substances comprise liquid fatty substances (oils) and non-liquid fatty substances such as solid or gaseous fatty substances.

[0143] Here, oils denote fatty substances (i) having a melting point less than or equal to 25°C, preferably less than or equal to 20°C, at atmospheric pressure (1.013 x 105 Pa). In other words, these fatty substances are liquid at atmospheric pressure and are not in the solid or gaseous state.

[0144] The oils may be selected from mineral oils, vegetable or synthetic oils, and silicone oils, and mixtures thereof. For example, the oils of vegetable origin may be selected from jojoba oil, avocado oil, sesame oil, sunflower oil, corn oil, soybean oil, safflower oil or grapeseed oil); the mineral oils may be selected from liquid petroleum jelly, hydrogenated or non-hydrogenated isoparaffins or isohexadecane; the synthetic oils may be chosen from parleeam, isopropyl myristate, cetearyl octanoate, polyisobutylene, ethylhexyl palmitate or alkyl benzoate, the silicone oils including volatile or non-volatile silicone oil, may be chosen from polydimethylsiloxanes (PDMS), cyclodimethylsiloxanes or cyclomethicones, as well as mixtures of these oils.

[0145] The non-liquid fatty substances may be selected from sorbitan fatty esters, fatty acid esters such as stearate esters, behenate esters, arachidate esters, palmitate esters, fatty acid esters of a sugar and mixtures thereof. In other cases, the non-liquid fatty substances may be chosen from purcellin oil (cetearyl octanoate), isopropyl myristate, isopropyl palmitate, C12-C15 alkyl benzoate, 2-ethylphenyl benzoate, isopropyl lanolate, hexyl laurate, dii-isopropyl adipate, isononyl isononanoate, oleyl erucate, 2-ethylhexyl palmitate, isostearyl isostearate, diisopropyl sebacate, octanoates, decanoates or ricinoleates of alcohols or polyalcohols, hydroxylated esters and pentaerythritol esters, and mixtures thereof.

[0146] The fatty substances which can be used in the present invention are (poly)oxyalkylenated or (poly)glycerolated.

[0147] Preferably, the composition of the present invention further comprises at least one fatty substance chosen from diisopropyl sebacate, diisopropyl adipate, isononyl isononanoate, isostearyl isostearate and mixtures thereof. Aqueous phase

[0148] The composition according to the invention may comprise an aqueous phase of any kind and appropriate contents which are known to those skilled in the art.

[0149] The expression “aqueous phase” here designates everything that constitutes the dispersed phase, namely: water, water-miscible organic solvents and water-soluble or water-dispersible additives.

[0150] Water-miscible organic solvents that may be mentioned include, for example, linear or branched monohydric alcohols containing from 1 to 8 carbon atoms, for example, ethanol, propanol, isopropanol, butanol or isobutanol; polyethylene glycols containing from 4 to 80 ethylene oxides; and polyols, for example, glycerol, propylene glycol, isoprene glycol and butylene glycol.

[0151] Water-soluble additives that may be mentioned, for example, include mono-, di- or trivalent mineral salts; water-soluble UV-protecting agents; and sugars such as glucose, sucrose, trehalose, sorbitol, lactose, fructose, xylose or maltose.

[0152] More preferably, the present composition, preferably for the treatment of keratinous materials, in particular for the skin, comprises: relative to the total weight of the composition,

[0153] (a) at least 0.08 wt% to 1 wt% of at least one first polysaccharide selected from diutan gum, welan gum and mixtures thereof;

[0154] (b) at least 0.1% by weight to 2% by weight of at least one amphoteric surfactant chosen from lecithins;

[0155] (c) at least 1% by weight to 3% by weight of a co-surfactant, chosen from an alcohol linear fat having 16 to 26 carbon atoms. Cosmetic uses

[0156] Another subject of the present invention is to provide a method of treating keratinous materials, such as skin, comprising applying to the keratinous materials a composition according to the present invention, so as to provide a sensation of transformation as disclosed in the present invention. Uses of the preparations

[0157] Another subject of the present invention is to provide a method of preparing a cosmetic product for treating keratinous materials, such as the skin, comprising a composition according to the present invention, which provides a sensation of transformation as disclosed in the present invention. Cosmetic product

[0158] Another subject of the present invention is to provide a cosmetic product including a composition having good stability and improved processing feel as disclosed in the present invention and optionally other functional agents in addition, for example, non-limited active agents, solubilizers, cosmetically acceptable carriers and the like.

[0159] More exhaustive but non-limiting lists of components useful in the present compositions disclosed herein are presented below.

[0160] According to the present invention, the composition optionally further comprises at least one active agent, which is almost any active agent acceptable in a cosmetic product, and / or any suitable emollient.

[0161] The compositions optionally include one or more solubilizers. Various solubilizers are well known in the art and may be useful for the compositions described herein. In some cases, the one or more solubilizers may be, for example, one or more cosmetically acceptable hydrotropic agents.

[0162] The composition according to the present invention may comprise at least one preservative, conventionally used for cosmetic products.

[0163] The following examples are intended to illustrate the present invention without, however, limiting its scope. EXAMPLES

[0164] The quantities / concentrations of ingredients in the compositions / formulas described below are expressed in % by weight, relative to the total weight of each composition / formula. I. Preparation

[0165] 1. The raw materials used in the examples of the invention and the comparative examples.

[0166] [Tables 1] INCI name Trade name Supplier C20-22 ALCOHOL NAFOL 2022 FR SASOL HYDROGENATED LECITHIN NIKKOL LECINOL S10 NIKKO DIUTAN GUM KELCO-CARE™ DIUTAN GUM LUBRIZOL GELLAN GUM KELCOGEL® CG LA CP KELCO DIISOPROPYL SEBACATE DUB™ DIS STEARINERIE DUBOIS 1. Examples 1 to 3 and comparative examples 1 to 5:

[0167] Invention compositions Nos. 1 to 3 and comparative compositions Nos. 1 to 5 were prepared as shown in Table 2.

[0168] Preparation process: • (1) Diisopropyl sebacate, water, hydrogenated lecithin (if present) (if any) and C20-22 alcohol (if any) were added to a main tank and mixed well at 80°C and homogenized to obtain mixture A; • (2) Lactic acid, NaOH, diutan gum (if used), gellan gum (if any) and xanthan gum (if any) were added into the mixture A obtained in step (1), and mixed until a homogeneous mixture B was obtained; • (3) mixture B obtained in step 2) was cooled to 25°C.

[0169] [Tables2] Expl Exp2 Exp3 Cepl Cep2 Cep3 Cep4 Cep5 Hydrogenated Lecithin 0.4 0.4 0.4 - 0.4 0.4 0.4 - C20-22 Alcohol 1.9 1.9 1.9 - 1.9 1.9 - 1.9 Diutan Gum 0.1 0.1 0.2 0.1 - - 0.1 0.1 Gellan Gum 0.1 - - - - 0.1 0.1 0.1 Xanthan Gum - 0.1 - 0.1 - 0.1 - - Diisopropyl Sebacate 8 8 8 8 8 8 8 8 Lactic Acid 5 5 5 5 5 5 5 5 NaOH 2.82 2.82 2.82 2.82 2.82 2.82 2.82 2.82 WATER (QS) Up to 100 Up to 100 Up to 100 Up to 100 Up to 100 Up to 100 Up to 100

[0170] II. Evaluation of the compositions of the invention and comparative 1. Rheological characterizations

[0171] Rheology was measured using a rheology measuring instrument with Anton Paar MCR301 rheological testing machine, spindle code model: cc027.

[0172] Test model: amplitude sweep

[0173] shear stress: 0.01-200%

[0174] Shear rate: 10 s 1

[0175] K = (G0'-Gl') / y

[0176] AG = G0'-G0”

[0177] G0': the initial storage module

[0178] G0”: the initial lost module

[0179] Gl': the storage modulus when the curves G' and G" begin to intersect.

[0180] y: shear stress.

[0181] Stability was determined using the centrifugal technique. Weigh 10 g of each composition, then put each composition in a centrifuge at a centrifugation of 900 rcf for 1 hour. Then take each composition out of the centrifuge and observe each composition. If there is no phase separation, absence of oil and appearance of fatty alcohol crystal, the composition is evaluated as “stable”, otherwise it is evaluated as “unstable”.

[0182] Here, the term "phase separation" means that the emulsification system is not stable, that the aqueous phase and the oil phase are not completely separated, that the emulsification system is partially separated from the aqueous phase / oil phase.

[0183] The term "oil-free" means that the emulsifying system cannot be formed, the aqueous phase and the oil phase are completely separated.

[0184] The compositions of the present invention and comparative compositions were evaluated and the test results were shown in Table 3 as follows.

[0185] [Tables3] Expl Exp2 Exp3 Cepl Cep2 Cep3 Cep4 Cep5 Centrifugat ion (900 rcf, Ih) Stable Stable Stable Stable Unstable: phase separation Unstable: Phase separation Unstable: Absence of oil Unstable: Absence of oil, A crystal of fatty alcohol appears K 12.0 4 8.73 79.15 0.97 23.5 9.4 NA NA AG 121.96 69.0 8 203.1 5 2.6 7.54 42.02 NA NA Test results

[0186] It can be seen that Examples 1-3 are all stable, no phase separation, no absence of oil and / or no fatty alcohol appeared.

[0187] The K value and AG value can be used to evaluate the transformation sensation. The higher the K (K = (G0'-Gr) / y) and AG (AG = G0'-G0”) values, the more obvious the improvement in the transformation sensation.

[0188] Compositions are considered acceptable if they have a K value greater than 2 and an AG value greater than 10.

[0189] All compositions of the invention are considered acceptable and have good processing feel and stability.

[0190] As for Cepl, Cepl compositions including only component (a) first polysaccharide without component (b) amphoteric surfactant and component (c) co-surfactant, exhibit poorer rheological characterizations compared to the compositions according to the present invention (e.g., Examples 1-3).

[0191] As for Cep2, the Cep2 composition including only the amphoteric surfactant component (b) and the co-surfactant component (c) without the first polysaccharide component (a) exhibits poorer rheological characterizations and is not considered acceptable, compared to the compositions according to the present invention (e.g., Examples 1-3).

[0192] As for Cep3, the Cep3 composition including the polysaccharide other than component (a) the first polysaccharide, and including component (b) amphoteric surfactant and component (c) co-surfactant has less stability, and is not considered acceptable, compared to the compositions according to the present invention (e.g., Examples 1-3).

[0193] As for Cep4, the Cep4 composition including component (a) first polysaccharide and component (b) amphoteric surfactant without component (c) co-surfactant has less stability, and is not considered acceptable, compared to the compositions according to the present invention (e.g., Examples 1-3).

[0194] As for Cep5, the Cep5 composition including the first polysaccharide component (a) and the co-surfactant component (c) without the amphoteric surfactant component (b) has worse stability, and is not considered acceptable, compared to the compositions according to the present invention (e.g., Examples 1-3). III. Conclusion

[0195] The present composition disclosed in the present invention is superior in terms of beneficial properties, for example: stable, transforming feeling, compared to the comparative. Furthermore, the compositions of inventive examples 1 to 3 are more durable.

Claims

1. Claims Composition, preferably for the treatment of keratinous materials, in particular for the skin, comprising: (a) at least one first polysaccharide; (b) at least one amphoteric surfactant; (c) at least one co-surfactant, chosen from a linear fatty alcohol having 14 to 30 carbon atoms; in which the first polysaccharide has the following formula (I): R (I) in which - R represents a radical chosen from rhamnose, mannose, galactose, arabinose, xylose, fucose, or

2. - M belongs to an ionic group or to an ionizable group, preferably M represents a counterion derived from an alkali metal or an alkaline earth metal, or a counterion derived from an inorganic ammonium or an organic amine; - n represents at least 200. Composition according to claim 1, in which M represents a counterion selected from a sodium, potassium, calcium, magnesium, ammonium ion or a counterion derived from an organic amine; or - n represents at least 1000, in particular at least 3000, or less than 20,000, especially less than 10,000, or 500 to 10,000, especially 1,000 to 7,000.

3. A composition according to claim 1 or 2, wherein the first polysaccharide is selected from diutan gum, welan gum and mixtures thereof.

4. A composition according to any preceding claim, wherein the amphoteric surfactant is selected from the group consisting of betaines, such as (C8-C20) alkylbetaines; (C8-C20) al-kylamido (C1-C6) alkylbetaines such as cocamidopropylbetaine; sul-fobetaines such as (C8-C20) alkylsulfobetaines, (C8-C20) alkylamido (C1-C6) alkylsulfobetaines; amino acids, such as glycine, (C8-C20) alkyl polyaminocarboxylates; (C8-C20) alkylamphoacetates, (C8-C20) alkylamphodiacetates; phospholipids such as lecithins, hydrogenated lecithins; salts thereof; derivatives thereof and mixtures thereof; preferably chosen from hydrogenated lecithins.

5. Composition according to any one of the preceding claims, in which the co-surfactant is chosen from the group of linear C14-C28 fatty alcohols, preferably linear C16-C26 fatty alcohols, or in particular linear C20-C22 fatty alcohols.

6. Composition according to any one of the preceding claims, wherein the weight ratio of amphoteric surfactant to co-surfactant is from 1:1 to 1:10, preferably from 1:1 to 1:8, even from 1:1 to 1:7, in particular from 1:1.5 to 1:6, advantageously from 1:2 to

7. 1 .U. A composition according to any preceding claim, wherein the composition further comprises a second polysaccharide different from the first polysaccharide, selected from natural polysaccharides, for example, pectin, xanthan gum, cellulose gum, dextrin, carrageenan, gelatin, gellan gum, guar gum, cellulose ether derivatives, such as hydroxyethylcellulose, hydroxypropylcellulose, hydroxyethylmethylcellulose, hydroxypropylmethylcellulose, methylhydroxyethylcellulose, starch, chitosan such as hydroxypropyl chitosan, hydroxypropyl guar, karaya gum, kelp, locust bean gum, microcrystalline cellulose, natto gum, pullulan, alginates such as sodium alginate, potassium alginate, propylene glycol alginate, sclerotium gum, sodium carboxymethyl dextran, cellulose sulfate, sodium, tragacanth gum, locust bean gums, biosaccharide gum, mucilages such as cactus mucilage, bacterial cell wall peptidoglycan, and mixtures thereof, preferably the second polysaccharide is selected from carrageenan, xanthan gum, gellan gum, pectin, chitosan and mixtures thereof; preferably selected from gellan gum.

8. A composition according to any preceding claim, wherein the composition further comprises a salt, for example a salt obtained by acid and / or base.

9. A method of treating keratinous materials, such as the skin, comprising the application to the keratinous materials of a composition according to any one of the preceding claims 1 to 8.

10. Use of the composition according to any one of the preceding claims 1 to 8 for preparing a product for the treatment of keratinous materials such as the skin.