COMPOSITION COMPRISING POLYLYSINE AND LOW MOLECULAR WEIGHT GLYCOLIPIDS

Abstract

COMPOSITION COMPRISING POLYLYSINE AND LOW MOLECULAR WEIGHT GLYCOLIPIDS The present invention relates to a composition comprising: (a) at least one cationic polymer selected from polylysines; and (b) at least one glycolipid, wherein the (a) cationic polymer has a molecular weight of less than 20,000, preferably less than 15,000 and, more preferably, less than 10,000. The composition according to the present invention can provide a keratinous substance such as skin with a deposit comprising glycolipids. Furthermore, the composition according to the present invention can include an environmentally friendly ingredient. Figure for abstract: none

Description

Title of the invention: COMPOSITION COMPRISING POLYLYSINE AND LOW MOLECULAR WEIGHT GLYCOLIPIDS Technical field

[0001] The present invention relates to a composition including polylysine and low molecular weight glycolipids, as well as a cosmetic process using the composition and a use relating to the composition. STATE OF THE ART

[0002] 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.

[0003] It is therefore essential to provide more sustainable compositions, preparation processes and ingredients to address these environmental concerns.

[0004] 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.

[0005] Biological surfactants such as glycolipids such as rhamnolipids are naturally occurring materials and are known to have unique bioactivities, such as anti-inflammatory efficacy, anti-allergic efficacy, antibacterial efficacy, and others. For example, glycolipids are known for their anti-inflammatory efficacy and can be used on keratinous substances, such as skin.

[0006] There are certain prior art documents disclosing compositions comprising glycolipids.

[0007] For example, WO 2021 / 1185675 discloses a personal care composition comprising at least: a) a glycolipid biosurfactant, and b) a hydrophilic cationic or pseudo-cationic active compound; wherein the glycolipid is preferably a sophorolipid.

[0008] For example, JP-T-2015-507626 discloses a composition comprising water, at least one biosurfactant and at least one fatty acid, wherein the fraction of the sum of all surfactants in the composition is 1 to 30% by weight, and the fatty acid fraction, based on the sum of fatty acids and surfactants, is 0.1 to 20% by weight.

[0009] Furthermore, WO 2020 / 178048 discloses a method comprising: depositing at least one substance from a medium onto a surface, the medium comprising a rhamnolipid. DISCLOSURE OF THE INVENTION

[0010] There is a need for a transparent composition which can allow deposition, in particular of glycolipids, on a keratinous substance such as the skin.

[0011] Thus, a first objective of the present invention is to propose a composition which can allow deposition, in particular of glycolipids, on a keratinous substance such as the skin.

[0012] Furthermore, a second objective of the present invention is to provide a composition which may include at least one environmentally friendly ingredient.

[0013] The above objective of the present invention can be achieved by a composition comprising: a. at least one cationic polymer chosen from polylysines; and b. at least one glycolipid

[0014] in which

[0015] the cationic polymer has a molecular weight of less than 20,000, preferably less than 15,000 and, more preferably, less than 10,000.

[0016] The (a) cationic polymer may have a molecular weight (Da) greater than 1000, preferably greater than 1500 and, more preferably, greater than 2000.

[0017] The amount of the (a) cationic polymer(s) in the composition according to the present invention may be from 0.01% to 10% by weight, preferably from 0.05% to 5% by weight, and more preferably from 0.1% to 3% by weight, relative to the total weight of the composition.

[0018] The (b) glycolipid may be chosen from rhamnolipids.

[0019] The amount of the (b) glycolipid(s) in the composition according to the present invention may be from 0.01% to 20% by weight, preferably from 0.1% to 15% by weight and, more preferably, from 1% to 10% by weight, relative to the total weight of the composition.

[0020] The composition according to the present invention may or may not comprise at least one acid having two or more pKa values ​​or a salt thereof.

[0021] The amount of the acid(s) having two or more pKa values ​​or of one or more salts thereof in the composition according to the present invention may be from 0.01% to 5% by weight, and preferably from 0.05% to 3% by weight, relative to the total weight of the composition.

[0022] The composition according to the present invention may further comprise at least one anionic surfactant chosen from amino acid surfactants and surfactants taurate.

[0023] The amount of the anionic surfactant(s) in the composition may be from 0.5% to 20% by weight, preferably from 1% to 15% by weight, and more preferably from 2% to 10% by weight, relative to the total weight of the composition.

[0024] The composition according to the present invention may comprise at least one amphoteric surfactant, preferably in an amount of 0.01% to 20% by weight, preferably of 0.1% to 15% by weight, and even more preferably of 1% to 10% by weight, relative to the total weight of the composition.

[0025] The total amount of surfactants, in particular the (b) glycolipid(s), in the composition may be from 3% to 30% by weight, preferably from 5% to 25% by weight, and more preferably from 7% to 20% by weight, relative to the total weight of the composition.

[0026] The weight ratio of the (b) glycolipid(s) to the total amount of surfactants other than the (b) glycolipid(s) in the composition may be from 10:1 to 1:5, preferably from 5:1 to 1:3, and more preferably from 3:1 to 1:2.

[0027] The pH of the composition according to the present invention may be from 4 to 8, preferably from 4.5 to 7.5 and, more preferably, from 5 to 7.

[0028] The composition according to the present invention may be a cleansing composition, preferably a skin cleansing composition, and more preferably, a facial cleansing composition.

[0029] The present invention also relates to a cosmetic process for a keratinous substance such as skin, comprising:

[0030] the application to the keratinous substance of the composition according to the present invention; and

[0031] possibly the elimination of the composition of the keratinous substance. Best mode for carrying out the invention

[0032] After careful research, the inventors have discovered that it is possible to provide a composition which can provide a keratinous substance such as skin with a deposit with glycolipids and can include at least one environmentally friendly ingredient.

[0033] Thus, the composition according to the present invention comprises: a. at least one cationic polymer chosen from polylysines; and a. at least one glycolipid

[0034] in which

[0035] the cationic polymer has a molecular weight of less than 20,000, preferably less than 15,000 and, more preferably, less than 10,000.

[0036] The composition according to the present invention can provide a keratinous substance such as skin a deposit comprising glycolipids. The deposit may be provided, for example, by precipitates including glycolipids formed in the composition according to the present invention.

[0037] Furthermore, a preferable embodiment of the composition according to the present invention can provide an increased amount of deposition or precipitates to a keratinous substance such as skin.

[0038] Since glycolipids such as rhamnolipids have bioactivities, such as anti-inflammatory efficacy, anti-allergic efficacy and antibacterial efficacy, the depot including (b) glycolipid provided by the composition according to the present invention is useful for caring for a keratinous substance such as skin. In particular, the composition according to the present invention is useful for treating or caring for acne-prone skin.

[0039] In addition, since glycolipids can act as surfactants, the depot, including (b) glycolipid, can provide improved cleansing effects. Thus, the composition according to the present invention is also useful for cleansing a keratinous substance such as skin.

[0040] Since polylysines can be obtained from natural resources, the (a) cationic polymer is an environmentally friendly ingredient. Therefore, the composition according to the present invention may include an environmentally friendly ingredient. In addition, the (b) glycolipid may be derived from renewable materials such as biodegradable materials. The composition according to the present invention may be environmentally friendly.

[0041] Hereinafter, the composition according to the present invention will be explained in more detail. [Composition] (Cationic polymer)

[0042] The composition according to the present invention comprises (a) at least one cationic polymer selected from polylysines. Only one type of cationic polymer may be used, but two or more different types of cationic polymers may be used in combination.

[0043] According to the present invention, the (a) cationic polymer is selected from polylysines. A single type of polylysines may be used, or two or more different types of polylysines may be used in combination.

[0044] The molecular weight (Da) of the (a) cationic polymer is less than 20,000, preferably less than 15,000 and, more preferably, less than 10,000. In other words, the (a) cationic polymer is a low molecular weight chitosan.

[0045] The molecular weight (Da) of the (a) cationic polymer may be greater than 1000, preferably greater than 1,500 and, more preferably, greater than 2,000.

[0046] Thus, the molecular weight (Da) of the (a) cationic polymer may be greater than 1,000 and less than 20,000, preferably greater than 1,500 and less than 15,000, and more preferably, greater than 2,000 and less than 10,000.

[0047] Unless otherwise indicated in the descriptions, "molecular weight" means an average molecular weight. Molecular weight may be measured or determined by gel permeation chromatography, for example, in accordance with ASTM D5296-19.

[0048] Polylysines are the condensation of several lysine amino acids. Polylysine may be a natural homopolymer of L-lysine that can be produced by bacterial fermentation. Polylysines are typically used as a natural preservative in food products. Polylysine is a polyelectrolyte that is soluble in polar solvents such as water.

[0049] The polylysine may be, for example, epsilon-polylysine (or designated "e-polylysine"), which is a condensation of amino groups in the e position and carboxyl groups of lysines, or alpha-polylysine (or designated "a-polylysine"), which is a condensation of amino groups in the a position and carboxyl groups of lysines. Polylysine is commercially available in different forms, such as poly D-lysine and poly L-lysine. Polylysine is usually a condensate of L-lysines, i.e., poly L-lysine.

[0050] As an example of polylysine, we can cite: • Epsilon-poly-L-lysine from JNC CORPORATION which is a 25% solution of Epsilon-poly-L-lysine having a weight average molecular weight of approximately 4,700 in aqueous solution.

[0051] According to a particular embodiment, the polylysine may be a modified polylysine, for example, a fatty chain polylysine as described in application FR 2889448, a polylysine with a guanidine or biguanidine function as described in application FR 2851465, a thiolated polylysine as described in application FR2853533.

[0052] Polylysine may be in the form of organic or inorganic salts. Acid addition salts are, for example, salts of hydrochloric or hydrobromic acid, sulfuric acid, citric acid, succinic acid, tartaric acid, lactic acid, para-toluenesulfonic acid, phosphoric acid, acetic acid; or salts of fatty acids, such as linoleic acid, oleic acid, palmitic acid, stearic acid, behenic acid, 18-methylicosanoic acid. Base addition salts are, for example, a sodium salt, a calcium salt, or a hydroxyalkylamine salt, for example, of N-methylglucamine, aminopropane diol or triethanolamine.

[0053] In certain preferred embodiments of the present invention, the polylysine of the present invention is present as a single molecule in the composition, or is not covalently linked to other compounds. In one embodiment of the present invention, the polylysine is not covalently linked to dye compounds. In one embodiment of the present invention, the polylysine is not covalently linked to polyorganosiloxane compounds. The term "polyorganosiloxane" is well known in the art to refer to compounds having an Si-O backbone and organic functional groups attached to the backbone.

[0054] In another embodiment of the present invention, the polylysine is in free form. The term "free form" herein indicates that the polylysine is not covalently linked to other compounds.

[0055] The amount of the (a) cationic polymer(s) in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, and more preferably 0.1% by weight or more, relative to the total weight of the composition.

[0056] The amount of the (a) cationic polymer(s) in the composition according to the present invention may be 10% by weight or less, preferably 5% by weight or less, and more preferably 3% by weight or less, relative to the total weight of the composition. It may be even more preferable that the amount of the (a) cationic polymer(s) is 1% by weight or less, relative to the total weight of the composition.

[0057] The amount of the (a) cationic polymer(s) in the composition according to the present invention may be from 0.01% to 10% by weight, preferably from 0.05% to 5% by weight, and more preferably from 0.1% to 3% by weight, relative to the total weight of the composition. It may be even more preferable for the amount of the (a) cationic polymer(s) to be from 0.1% to 1% by weight, relative to the total weight of the composition.

[0058] In the context of this specification, any combination of the above upper limit values ​​and lower limit values ​​may be available to represent the preferred range of the quantity. (Glycolipid)

[0059] The composition according to the present invention comprises (b) at least one glycolipid. A single type of glycolipid may be used, or two or more different types of glycolipids may be used in combination.

[0060] By the term "glycolipid" is meant a compound formed from a lipid to which one or more sugar compounds are attached.

[0061] The (b) glycolipid may be chosen from glucolipids, sophorolipids, tre- halolipids, cellobiose lipids, rhamnolipids and their mixtures.

[0062] The (b) glycolipid may preferably be chosen from sophorolipids, rhamnolipids, and mixtures thereof, and, more preferably, from rhamnolipids.

[0063] Glucolipid.es:

[0064] The (b) glycolipid may be selected from glucolipids, which contain a glucose moiety and may be represented by the general formula (I):

[0065] where: • R1 represents a hydrogen atom or a cation, • p denotes an integer ranging from 1 to 4, and • q denotes an integer ranging from 4 to 10, preferably equal to 6.

[0066] Glucolipids can be produced by the bacterium Alcaligenes sp. MM1.

[0067] Suitable fermentation processes are reviewed by M. Schmidt in his doctoral thesis (1990), Technical University of Braunschweig, and by Schulz et al. (1991) Z. Naturforsch., 46C, 197-203. Glucolipids are recovered from the fermentation broth by solvent extraction using diethyl ether or a mixture of dichloromethane:methanol or chloroform:methanol.

[0068] Sophorolipids:

[0069] The (b) glycolipid may be sophorolipids, which contain a sophorose moiety and may be represented by the general formula (II):

[0070] where: • R3 and R4 individually represent a hydrogen atom or an acetyl group, • R5 represents a saturated or unsaturated, hydroxylated or unhydroxylated hydrocarbon group hydroxylated, containing from 1 to 9 carbon atoms, preferably a methyl group, • R6 represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon group, containing from 1 to 19 carbon atoms,

[0071] provided that the total number of carbon atoms in the R5 and R6 groups does not exceed 20 and is preferably from 14 to 18.

[0072] The sophorolipids may be incorporated into the composition according to the present invention either in the form of an open-chain free acid, where R7 represents a hydrogen atom and R8 represents a hydroxy OH group, or in its lactone form, where a lactone ring is formed between R7 and R8, as indicated by formula (III): (III)

[0073] where: • R3, R4, R5 and R6 are as defined above

[0074] provided that at least one of R3 and R4 represents an acetyl group.

[0075] Sophorolipids can be produced by yeast cells, for example, Torulopsis apicola and Torulopsis bombicola cells. The fermentation process generally uses sugars and alkanes as substrates.

[0076] Suitable fermentation methods are reviewed in A.P. Tulloch, J.F.T. Spencer and P.A.J. Gorin, Can. J. Chem. (1962), 40, 1326, and U. Gobbert, S. Lang and F. Wagner, Biotechnology Letters (1984), 6(4), 225. The resulting product is a mixture of various open-chain sophorolipids and sophorolipid lactones which may be used as mixtures, or the required form may be isolated.

[0077] It is possible to use as sophorolipid, for example the product sold under the name Sopholiance S by Givaudan and the product sold under the name BioToLife by BASF.

[0078] Trehalolipids:

[0079] The (b) glycolipid may be selected from trehalolipids, which contain a trehalose moiety and may be represented by the general formula (IV): s Ç-O {CM ). i < œoH

[0080] where: • R9' R10 and R11 individually represent a saturated hydrocarbon radical or unsaturated, hydroxylated or non-hydroxylated, containing 5 to 13 carbon atoms.

[0081] Trehalolipids can be produced by bacterial fermentation using the marine bacterium Arthrobacter sp. Ek 1 or the freshwater bacterium Rhodococcus erythropolis. Suitable fermentation methods are proposed by Ishigami et al. (1987), J. Jpn. Oil Chem. Soc., 36, 847-851, Schultz et al. (1991), Z. Naturforsch., 46C, 197-203, and Passeri et al. (1991), Z. Naturforsch., 46C, 204-209.

[0082] Cellobiose lipids:

[0083] The (b) glycolipid may be selected from cellobiose lipids, which contain a cellobiose moiety and may be represented by the general formula (IV): , (V) COOR* i CH OH j 2

[0084] where: • R1 represents a hydrogen atom or a cation, • R12 represents a saturated or unsaturated, hydroxylated or unhydroxylated hydrocarbon radical hydroxylated, containing from 9 to 15 carbon atoms, preferably 13 carbon atoms, • R13 represents a hydrogen atom or an acetyl group; and • R14 represents a saturated or unsaturated, hydroxylated or unhydroxylated hydrocarbon radical hydroxylated, containing 4 to 16 carbon atoms.

[0085] Cellobiose lipids can be produced by cells of fungi of the genus Ustilago. Suitable fermentation methods are proposed by Frautz, Lang and Wagner (1986), Biotech. Letts., 8, 757-762.

[0086] Rhamnolipids:

[0087] The (b) glycolipid may be chosen from rhamnolipids.

[0088] The composition according to the present invention preferably comprises one or more rhamnolipids.

[0089] Rhamnolipids are glycolipids produced by various bacterial species. They consist of one rhamnose fragment (mono-rhamnolipid) or two rhamnose fragments (di-rhamnolipid) linked by a glycosidic bond to one, two or three [3-hydroxy] fatty acid chains linked together by an ester bond.

[0090] More specifically, these mono-rhamnolipids and di-rhamnolipids correspond to the following formula (VI):

[0091] Or : m denotes an integer equal to 2, 1 or 0, n denotes an integer equal to 1 or 0, and Riet R2 independently represent hydro radicals identical or different carbon atoms, comprising from 2 to 24 carbon atoms, preferably from 5 to 13 carbon atoms, branched or unbranched, substituted or not, in particular hydroxy-substituted, saturated or unsaturated, preferably a singly, doubly or triply unsaturated alkyl radical.

[0092] Thus, when n is equal to 0, formula (VI) protects mono-rhamnolipids and, when n is equal to 1, it protects di-rhamnolipids.

[0093] The composition according to the present invention preferably comprises at least one di-rhamnolipid.

[0094] The composition according to the present invention preferably comprises at least one di-rhamnolipid of formula (VI) in which: • m denotes an integer equal to 2, 1 or 0; • n denotes an integer equal to 1; and • R1 and R2 each independently represent identical or different hydrocarbon radicals, comprising from 2 to 24 carbon atoms, preferably from 5 to 13 carbon atoms, branched or not, substituted or not, in particular hydroxy-substituted, saturated or unsaturated, preferably a singly, doubly or triply unsaturated alkyl radical, as well as their salts, their solvates and their optical isomers.

[0095] The glycosidic bond between the two rhamnose fragments can be in alpha or beta configuration and is preferentially in alpha configuration.

[0096] In the context of the present invention, • the salts of di-rhamnolipids of formula (VI) are more particularly their carboxylate salts with an organic or inorganic cation and in particular with a cation chosen from sodium, potassium, calcium and ammonium. • the solvated forms of the di-rhamnolipids of formula (VI) are more particularly those solvated by one or more molecules of water or organic solvents, for example a hydrate or a solvate of a linear or branched alcohol, such as ethanol or isopropanol, the optically active carbon atoms of the fatty acids being preferentially in the form of the R enantiomers, and • the term "alkyl" radical denotes a saturated, linear or branched aliphatic group; for example, a C1-C2o alkyl group having a linear or branched hydrocarbon chain of 1 to 20 carbon atoms, more particularly a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl or eicosyl group.

[0097] The composition according to the present invention preferably comprises at least one di-rhamnolipid of formula (VI) in which: • m denotes an integer equal to 2, 1 or 0; • n denotes an integer equal to 1; and Ri and R2, which are identical or different, are chosen from the radicals pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, do-decenyl, tridecenyl and the radicals of formula -(CH2)OCH3, o denoting an integer ranging from 1 to 23, in particular from 3 to 15 and more particularly from 4 to 12.

[0098] According to one embodiment of the invention, the composition according to the present invention comprises at least one di-rhamnolipid of general formula (VI) in which m is equal to 1.

[0099] According to one embodiment of the present invention, the composition according to the present invention comprises a mixture of at least two, preferably at least three, di-rhamnolipids of general formula (VI) in which m is preferably equal to 1.

[0100] According to another embodiment of the present invention, the composition according to the present invention comprises a mixture comprising at least one mono-rhamnolipid.

[0101] More preferably, the composition according to the present invention comprises at least one dirhamnolipid of the following formula (VII): m denotes an integer equal to 2, 1 or 0; preferably, m is equal to 1, n denotes an integer equal to 1, RI is a radical (CH2)p-CH3 with p being an integer ranging from 1 to 23, preferably from 4 to 12, • R2 is a radical -(CH2)q-CH3 with q an integer ranging from 1 to 23, preferably from 4 to 12,

[0103] and also their salts, their solvates and their optical isomers.

[0104] By way of illustration and without limiting the di-rhamnolipids of formula (VII) which may be suitable for the present invention, mention may in particular be made of the compounds of formula di-RL-CXCY, as defined in Table 1 below.

[0105] The formula di-RL-CXCY is a writing variant in order to represent a di-rhamnolipid (di-RL) functionalized by two radicals Ri and R2 respectively represented by the symbols CX and CY, the integers X and Y being respectively equal to p+4 and q+4.

[0106] [Tables 1] Compounds | Dï-KL-CXCY P « 1 d d&L-CKS 4 4 2 1 4 6 3 diRL-CWCS « 4 4 6 s | «.«2 6 § â j 4ML-C12C10 S 6 7 «L-C12C12 & S 8 £ lû 9 «L-C14C12 10 S 10 | W » HI «X14C16 12 12 4sRL-C16CÏ4 n 10 13 j &&L-C16C15 12 $2

[0107] According to a preferred embodiment, the composition according to the present invention comprises at least one di-rhamnolipid of formula (VII) in which p and q are identical and equal to 6 and m is equal to 1, also called di-RL-ClOCIO, or one of its salts, solvates and optical isomers.

[0108] Preferably, the di-rhamnolipid of formula (VII) in which p and q are identical and equal to 6 and m is equal to 1 is present in the composition according to the present invention in a proportion of at least 50% by weight and preferably from 51% to 85% by weight, relative to the total weight of rhamnolipids.

[0109] According to another embodiment, the composition according to the present invention comprises at least one di-rhamnolipid of formula (VII) in which m is equal to 1, p is equal to 6 and q is equal to 8.

[0110] According to another embodiment, the composition according to the present invention comprises at least one di-rhamnolipid of formula (VI) in which n and m are equal to 1, Ri represents a radical -(CH2)OCH3, o being an integer ranging from 4 to 12, and R2 being chosen from the radicals pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl; preferably, Ri represents a radical -(CH2)6CH3 and R2 a nonenyl radical.

[0111] According to another preferred embodiment, the composition according to the present invention comprises a mixture of at least two, in particular at least three, di-rhamnolipids of formula (VI) or of formula (VII) chosen from: • a di-rhamnolipid of formula (VII) in which p and q are identical and equal to 6 and m is equal to 1; • a di-rhamnolipid of formula (VII) in which m is equal to 1, p is equal to 6 and q is equal to 8; and • at least one di-rhamnolipid of formula (VI) in which n and m are equal to 1, Ri represents a radical -(CH2)OCH3 with o an integer varying from 4 to 12, and R2 is chosen from the radicals pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl; preferentially, Ri represents a radical -(CH2)6CH3 and R2 a nonenyl radical.

[0112] Preferably, the composition according to the present invention comprises a mixture of at least two, in particular at least three, di-rhamnolipids of formula (VI) or of formula (VII) chosen from: • at least 50% by weight and preferably from 51% to 85% by weight of a di-rhamnolipid of formula (VII) in which p and q are identical and equal to 6 and m is equal to 1, relative to the total weight of rhamnolipids, • from 0.5% to 25% by weight, preferably from 5% to 15% by weight, of a di-rhamnolipid of formula (VII) in which p is equal to 6, q is equal to 8 and m is equal to 1, relative to the total weight of rhamnolipids, and • from 0.5 to 15% by weight, preferably from 3 to 12% by weight, preferably from 5 to 10% by weight, of a dirhamnolipid of formula (VI) in which n and m are equal to 1, Ri represents a radical -(CH2)6CH3 and R2 represents a nonenyl radical, relative to the total weight of rhamnolipids.

[0113] As specified above, rhamnolipids are usually prepared by processes known to those skilled in the art from bacterial producers, such as Pseudomonas.

[0114] Suitable fermentation processes are reviewed by D. Haferburg, R. Hommel, R. Claus and H.P. Kleber in Adv. Biochem. Ing. / Biotechnol. (1986), 33, 53-90, and by F. Wagner, H. Bock and A. Kretschmar in Fermentation (ed. RM Lafferty) (1981), 181-192, Springer Verlag, Vienna.

[0115] The rhamnolipid marketed under the name Rheance One by Evonik (INCI name: glycolipids) can be used as a rhamnolipid.

[0116] The amount of the (b) glycolipid(s) in the composition according to the present invention may be 0.01% by weight or more, preferably 0.1% by weight or more, and, more preferably, 1% by weight or more, relative to the total weight of the composition.

[0117] The amount of the (b) glycolipid(s) in the composition according to the present invention may be 20% by weight or less, preferably 15% by weight or less and, more preferably, 10% by weight or less, relative to the total weight of the composition.

[0118] The amount of the (b) glycolipid(s) in the composition according to the present invention may be from 0.01% to 20% by weight, preferably from 0.1% to 15% by weight and, more preferably, from 1% to 10% by weight, relative to the total weight of the composition.

[0119] The (b) glycolipid(s) may be included in the composition according to the present invention in an amount greater than the (a) cationic polymer. (Other optional ingredients)

[0120] - Water

[0121] The composition according to the present invention may or may not comprise water.

[0122] The amount of water in the composition according to the present invention may be 50% by weight or more, preferably 60% by weight or more and, more preferably, 70% by weight or more, relative to the total weight of the composition.

[0123] The amount of water in the composition according to the present invention may be 99% by weight or less, preferably 97% by weight or less, and more preferably 95% by weight or less, relative to the total weight of the composition.

[0124] The amount of water in the composition according to the present invention may be from 50% to 99% by weight, preferably from 60% to 97% by weight and more preferably from 70% to 95% by weight, relative to the total weight of the composition.

[0125] - Acid having two or more acid dissociation constants

[0126] The composition according to the present invention may or may not comprise at least one acid having two or more pKa values ​​or a salt thereof. A single type of acid having two or more pKa values ​​or a salt thereof may be used, or two or more different types of acids having two or more pKa values ​​or salts thereof may be used in combination.

[0127] The acid having two or more pKa values ​​or the salt thereof has two or more acid dissociation constants or a salt(s) thereof. The value pKa (acid dissociation constant) is well known to those skilled in the art and must be determined at a constant temperature such as 25°C.

[0128] The composition according to the present invention may include two or more acids having two or more pKa values ​​or salt(s) thereof in combination.

[0129] Acids having two or more pKa values ​​may be non-polymeric acids. The term "non-polymeric" herein means that the acid is not obtained by polymerization of two or more monomers. Therefore, non-polymeric acid does not correspond to an acid obtained by polymerizing two or more monomers such as a polycarboxylic acid.

[0130] It is preferable that the molecular weight of the non-polymeric acid having two or more pKa values ​​or salt(s) thereof is 1000 or less, preferably 800 or less, and more preferably 700 or less.

[0131] There is no limit to the type of the non-polymeric acid having two or more pKa values ​​or the salt(s) thereof. Two or more different types of non-polymeric acids having two or more pKa values ​​or salts thereof may be used in combination. Thus, a single type of non-polymeric acid having two or more pKa values ​​or a salt thereof or a combination of different types of non-polymeric acids having two or more pKa values ​​or salts thereof may be used.

[0132] Herein, the term "salt" means a salt formed by the addition of appropriate base(s) to the non-polymeric acid having two or more pKa values, which can be obtained from a reaction with the non-polymeric acid having two or more pKa values ​​with the base(s) according to methods known to those skilled in the art. As a salt, mention may be made of metal salts, for example alkali metal salts such as Na and K and alkaline earth metal salts such as Mg and Ca and ammonium salts.

[0133] The non-polymeric acid having two or more pKa values ​​or salt(s) thereof may be an organic acid or salt(s) thereof, and preferably a hydrophilic or water-soluble organic acid or salt(s) thereof.

[0134] The non-polymeric acid having two or more pKa values ​​may have at least two acid groups selected from the group consisting of a carboxylic group, a sulfuric group, a sulfonic group, a phosphoric group, a phosphonic group, a phenolic hydroxyl group, and a mixture thereof.

[0135] The non-polymeric acid having two or more pKa values ​​may be a non-polymeric polyvalent acid.

[0136] The non-polymeric acid having two or more pKa values ​​may be selected from the group consisting of dicarboxylic acids, disulfonic acids and diphosphoric acids, and a mixture thereof.

[0137] Non-polymeric acid having at least two pKa values ​​or salt(s) thereof may be selected from the group consisting of oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, fumaric acid, maleic acid, malic acid, citric acid, aconitic acid, oxaloacetic acid, tartaric acid and their salts; aspartic acid, glutamic acid and their salts; terephthalylidene dicamphor sulfonic acid or their salts (Mexoryl SX), Benzophenone-9; phytic acid and its salts;Red 2 (Amaranth), Red 102 (New Coccine), Yellow 5 (Tartrazine), Yellow 6 (Sunset Yellow FCF), Green 3 (Fast Green FCF), Blue 1 (Brillant blue FCF), Blue 2 (Indigo Carminé), Red 201 (Lithol Rubine B), (Lithol Rubine BCA), Red 204 (Lake Red CBA), Red 206 (Lithol Red CA), Red 207 (Lithol Red BA), Red 208 (Lithol Red SR), Red 219 (Brilliant Lake Red R), Red 220 (Deep Maroon), Red 227 (Fast Acid Magenta), Yellow 203 (Quinoline Yellow WS), Green 201 (Alizanine Cyanine Green F), Green 204 (Pyranine Conc), Green 205 (Light Green SF Yellowish), Blue 203 (Patent Blue CA), Blue 205 (Alfazurine FG), Red 401 (Violamine R), Red 405 (Permanent Re F5R), Red 502 (Ponceau 3R), Red 503 (Ponceau R), Red 504 (Ponceau SX), Green 401 (Naphthol Green B), Green 402 (Guinea Green B) and Black 401 (Naphthol Blue Black); folic acid, ascorbic acid, erythorbic acid and salts thereof; cystine and salts thereof, EDTA and its salts; glycyrrhizin and its salts;and a mixture of these. ;

[0138] It may be preferable that the non-polymeric acid having two or more pKa values ​​or salt(s) thereof is selected from the group consisting of citric acid, lactic acid, phosphoric acid, phytic acid and salts thereof, such as sodium phosphate, disodium hydrogen phosphate and sodium dihydrogen phosphate, and a mixture thereof.

[0139] Acids having two or more pKa values ​​or salt(s) thereof may be polymeric acids or salts thereof, such as polyphosphoric acids and their salts and polyphosphorus derivatives.

[0140] The term “polyphosphoric acid” here preferably designates linear or cyclic oxoacids comprising or consisting of at least two “PO4” structure units covalently linked together via at least one oxygen atom.

[0141] Polyphosphoric acids can preferably be represented by the following formula:

[0142] in which n can be between 2 and 20, between 2 and 15 or between 2 and 10.

[0143] Herein, the term “salt” means a salt formed by the addition of appropriate base(s) to the acid polyphosphoric acid having two or more pKa values, which can be obtained from a reaction with the polyphosphoric acid(s) having two or more pKa values ​​with the base(s) according to methods known to those skilled in the art. As salt, mention may be made of metal salts, for example alkali metal salts such as Na and K and alkaline earth metal salts such as Mg and Ca and ammonium salts.

[0144] The term "polyphosphorus derivative" here preferably designates linear or cyclic compounds comprising at least two phosphorus atoms covalently bonded together via at least one linker L comprising at least one oxygen atom and / or at least one carbon atom. According to one embodiment, when the linker comprises at least one carbon atom, it may comprise at least one nitrogen atom.

[0145] Preferably, the linker L of the polyphosphorus derivatives used according to the different subjects of the invention comprises at least one oxygen atom.

[0146] Preferably, the polyphosphorus derivative(s) used according to the present invention comprise less than 20 phosphorus atoms, preferably less than 15 phosphorus atoms, preferably less than 10 phosphorus atoms.

[0147] The polyphosphorus derivative may comprise at least two groups selected from a -P(R)(=O)-OH group, a -P(R)(=0)-0 M group, a >P(=O)-OH group and / or a >P(=0)-0 M group, with: • M representing a cationic counterion, preferably chosen from alkali metals and alkaline earth metals, • R representing a hydroxyl group, a -OM group, with M representing a cationic counterion, preferably chosen from alkali metals and alkaline earth metals, a (Ci-C6)alkyl, (Ci-C6)alkoxy, cy-cloalkyloxy or (hetero)aryloxy group, and • > representing the two bonds connected to the phosphorus atom and forming part of a cycle.

[0148] According to one embodiment, the polyphosphorus derivative(s) are chosen from inorganic polyphosphorus derivatives.

[0149] According to another embodiment, the polyphosphorus derivative(s) are chosen from organic polyphosphorus derivatives.

[0150] The polyphosphorus derivative(s) present in the compositions according to the invention may be non-amine derivatives.

[0151] The polyphosphorus derivative(s) as defined above may be chosen from polyphosphates and polyphosphonates, and mixtures thereof.

[0152] The polyphosphorus derivative(s) may be chosen from: • inorganic polyphosphorus derivatives chosen from: • pyrophosphates, preferably in the form of salts, preferably of alkali metal salts, which may or may not be hydrated, such as sodium pyrophosphate, in particular tetrabasic sodium pyrophosphate, potassium pyrophosphate or sodium pyrophosphate decahydrate; • hexametaphosphates, preferably in the form of salts, preferably alkali metal salts, which may or may not be hydrated, such as sodium hexametaphosphate; • tripolyphosphates, preferably in the form of salts, preferably alkali metal salts, which may or may not be hydrated, such as sodium tripolyphosphate; • trimetaphosphates, preferably in the form of salts, preferably alkali metal salts, which may or may not be hydrated, such as sodium trimetaphosphate; • and mixtures thereof; • and mixtures thereof.

[0153] The polyphosphorus derivative(s) may be chosen from: • inorganic polyphosphate derivatives chosen from hydrated or non-hydrated alkali metal pyrophosphates, such as sodium pyrophosphate, potassium pyrophosphate, sodium pyrophosphate decahydrate; and polyphosphates, such as sodium hexametaphosphate, sodium polyphosphate, sodium tripolyphosphate, sodium trimetaphosphate; and mixtures thereof; • and organic polyphosphorus derivatives chosen from organic polyphosphonate derivatives such as polyphosphonic acids such as EDTMP, DETMP, ATMP, HEDP, DTPMP, and mixtures thereof; • and mixtures thereof.

[0154] The polyphosphorus derivative(s) may be chosen from compounds belonging to any one of the formulae (I), (II) and (III) below; or mixtures thereof: MQ™ 0 -P—0 ... - M n 1 9 1 P------------i, / ] | \j | | \ / vy 2 0=1—0 y- (I) (II) (III)

[0155] as well as their solvates such as hydrates;

[0156] with • n ranging from 2 to 10, preferably from 2 to 6, more preferably from 2 to 3; • m ranging from 2 to 10, preferably from 2 to 6;

[0157] Y representing an alkyl chain comprising at least one phosphorus atom and optionally one or more non-phosphorus heteroatoms, or a carbon-based cyclic radical optionally comprising one or more heteroatoms, said hydrocarbon-based radical being substituted by one or more groups comprising one or more phosphorus atoms; • M or M' representing a hydrogen atom, an alkali metal or an alkaline earth metal; • representing a single bond when M or M' is H, or an ionic bond.

[0158] It is understood that when M or M' is other than H, then M or M' are such that the overall charge of the molecule is zero. Thus, in the case of divalent metals, M and M' can represent the same divalent metal.

[0159] The polyphosphorus derivatives of formula (I) are linear.

[0160] The polyphosphorus derivatives of formula (II) are cyclic.

[0161] The polyphosphorus derivative(s) may be inorganic polyphosphate compounds, chosen from: • polyphosphates and / or hydrates thereof; and mixtures thereof, preferably of sodium and / or potassium, such as sodium hexametaphosphate (SHMP),

[0162] sodium polyphosphate, sodium tripolyphosphate, sodium trimetaphosphate, preferably sodium tripolyphosphate corresponding to the following formula: • pyrophosphates and / or hydrates thereof, and mixtures thereof, preferably of sodium and / or potassium; preferably chosen from sodium pyrophosphate and / or potassium pyrophosphate, and hydrates thereof, such as

[0163] sodium pyrophosphate decahydrate corresponding to the following formula: M +, ioh2o N / A

[0164] or potassium pyrophosphate corresponding to the following formula: q 0 V'k'K* w K* K'

[0165] The polyphosphorus derivative(s) may be organic polyphosphate derivatives and / or organic polyphosphonate derivatives, preferably chosen from polyphosphoric acids, polyphosphonic acids such as EDTMP, DETMP, ATMP, HEDP, DTPMP POfOHJg PO(OH)2DETMP and mixtures thereof; < h POfOHfe PO(OH]2 POfOHfe • iminodi(methylphosphonic) acid (example L) or its salts, and their mixtures; • tetrasodium etidronate (example K) of formula • and mixtures thereof.

[0166] In one embodiment of the present invention, the acid having two or more pKa values ​​or a salt thereof is selected from polyphosphoric acids and their salts.

[0167] Examples of polyphosphoric acids and their salts include pyrophosphoric acid, sodium polyphosphate, sodium pyrophosphate, in particular tetrabasic sodium pyrophosphate, sodium pyrophosphate decahydrate, sodium tripolyphosphate and sodium hexametaphosphate.

[0168] In preferred embodiments of the present invention, the acid(s) having two or more pKa values ​​or salt(s) thereof are selected from a non-polymeric acid, such as citric acid and phytic acid, and polymeric acids or salts thereof, such as polyphosphoric acids and salts thereof. In a particularly preferred embodiment, the phytic acid having two or more pKa values ​​is phytic acid.

[0169] The amount of the acid(s) having two or more pKa values ​​or salt(s) thereof in the composition according to the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, and more preferably 0.1% by weight or more, relative to the total weight of the composition.

[0170] The amount of the acid(s) having two or more pKa values ​​or one or of salts thereof in the composition according to the present invention may be 5% by weight or less, preferably 3% by weight or less, and more preferably 2% by weight or less, relative to the total weight of the composition.

[0171] The amount of the non-polymeric acid having two or more pKa values ​​or salt(s) thereof in the composition according to the present invention may be from 0.01% to 5% by weight, and preferably from 0.05% to 3% by weight, relative to the total weight of the composition.

[0172] - Anionic surfactants

[0173] The composition according to the present invention may or may not include at least one anionic surfactant other than (b) glycolipid. A single type of nonionic surfactant may be used, or two or more different types of nonionic surfactants may be used in combination.

[0174] The anionic surfactants may be chosen from amino acid surfactants and taurate surfactants.

[0175] Amino acid surfactant

[0176] The term "amino acid surfactant" herein refers to an anionic surfactant based on amino acids or derivatives thereof. Typically, the amino acid surfactant is an anionic surfactant comprising at least one amino moiety and at least one carboxylic acid moiety that is in the form of a carboxylate. The amino acid surfactant may have two or more amino moieties and / or two or more carboxylic acid moieties that are in the form of carboxylates. The amino acid surfactant may also be referred to as an amino acid-based surfactant.

[0177] The amino acid surfactant here is different from the taurate surfactant.

[0178] The amino acid surfactant may preferably be chosen from acid derivatives amino acids. The amino acid derivative may be more preferably selected from salts of amino acids and N-acylated amino acids, for example alkali metal salts and alkaline earth metal salts of amino acids and N-acylated amino acids, such as sodium salts, potassium salts, magnesium salts and calcium salts of amino acids and N-acylated amino acids. Thus, the amino acid surfactant is preferably an N-acyl amino acid surfactant.

[0179] The acyl group that forms the N-acyl moiety of the amino acid derivatives may be a C1-C30 acyl group, preferably a C6-C28 acyl group and, more preferably, a C12-C24 acyl group.

[0180] The amino acid surfactant may even more preferably be chosen from the group consisting of glutamates, N-acylated glutamates, aspartates, N-acylated aspartates and their salts.

[0181] The carboxylate salts of these amino acids can be formed by conventional means such as neutralizing the respective amino acid with a base. The group amine located on the α-carbon or [3-carbon of the neutralized amino acid is acylated with a fatty acid halide (acyl halide) in the presence of a base via the well-known Schotten-Baumann reaction to give the amide, thereby forming the desired surfactant reaction product, namely the amino acid surfactant. Suitable acyl halides for acylation of the amino acid carboxylate salt include acyl chlorides, bromides, fluorides, and iodides. Acyl halides can be prepared by reacting a saturated or unsaturated, straight or branched C8-C22 fatty acid with a thionyl halide (bromide, chloride, fluoride, and iodide).Representative acyl halides include, but are not limited to, acyl chlorides selected from decanoyl chloride, dodecanoyl chloride (lauroyl chloride), cocoyl chloride (fatty acid chlorides derived from coconut oil), tetradecanoyl chloride (myristoyl chloride), hexadecanoyl chloride (palmitoyl chloride), octadecanoyl chloride (stearoyl chloride), 9-octadecenoyl chloride (oleoyl chloride), eicosanoyl chloride (arachidoyl chloride), docosanoyl chloride (behenoyl chloride), and any mixture thereof. Other acyl halides include the bromides, fluorides, and iodides of the above fatty acids. A method for preparing acyl halides and another method for acylating amino acids are disclosed in U.S. Patent Application Publication No. 2008 / 0200704, published August 21, 2008, which application is incorporated herein by reference.

[0182] In one embodiment, said amino acid-based anionic surfactant is represented by formula (A): □ (A) ^(CHg)n^COOM z'' 'N" X ¥

[0183] in which:

[0184] Z represents a saturated or unsaturated, linear or branched hydrocarbon group containing 8 to 22 carbon atoms,

[0185] X is hydrogen or methyl group,

[0186] n is 0 yes,

[0187] Y is selected from hydrogen, -CH3, -CH(CH 3)2, -CH2CH(CH3)2, -CH(CH3)CH2CH 3, -CH2C6H5, -CH2C2H4 OH, -CH2OH, -CH(OH)CH3, -(CH2)4NH2, -(CH2)3 NHC(NH)NH2, -CH2C(O)O M+> -(CH2)2C(O)OH, and -(CH2)2C(O)O M+, and

[0188] M is a salt-forming cation in which COO is the counteranion, such as, for example, sodium, potassium, ammonium or triethanolamine.

[0189] According to a preferred embodiment of the present invention, in the fatty acid amine of formula (A):

[0190] Z represents a linear saturated or unsaturated C8 to C18 alkyl group, in particular a cocoyl group,

[0191] X is hydrogen,

[0192] nvautO,

[0193] Y is hydrogen, and

[0194] M is a salt-forming cation in which COO is the counteranion, such as, for example, sodium, potassium, ammonium or triethanolamine.

[0195] Examples of the amino acid surfactants are salts of alanine, arginine, aspartic acid, glutamic acid, glycine, isoleucine, leucine, lysine, phenylalanine, serine, tyrosine, valine, sarcosine and any mixture thereof. More specifically, mention may be made of amino acid surfactants such as dipotassium capryloyl glutamate, dipotassium undecylenoyl glutamate, disodium capryloyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium capryloyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium capryloyl glutamate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium olivoyl glutamate, sodium palmitoyl glutamate, sodium stearoyl glutamate,undécylénoyl glutamate de sodium, [3-alaninate de cocoyl méthyle, [3-alaninate de lauroyle, [3-alaninate de lauroyl méthyle, [3-alaninate de myristoyle, lauroyl méthyl [3-alaninate de potassium, cocoyl alaninate de sodium, cocoyl méthyl [3-alaninate de sodium et myristoyl méthyl [3-alaninate palmitoyl glycinate de sodium, lauroyl glycinate de sodium, cocoyl glycinate de sodium, myristoyl glycinate de sodium, lauroyl glycinate de potassium, cocoyl glycinate de potassium, lauroyl sarcosinate de potassium, cocoyl sarcosinate de potassium, cocoyl sarcosinate de sodium, lauroyl sarcosinate de sodium, myristoyl sarcosinate de sodium, oléoyl sarcosinate de sodium, palmitoyl sarcosinate de sodium, lauroyl sarcosinate d'ammonium, lauroyl aspartate de sodium, myristoyl aspartate de sodium, cocoyl aspartate de sodium, caproyl aspartate de sodium, lauroyl aspartate disodique, myristoyl aspartate disodique, cocoyl aspartate disodique, caproyl aspartate disodique, lauroyl aspartate de potassium,potassium myristoyl aspartate, potassium cocoyl aspartate, potassium caproyl aspartate, dipotassium lauroyl aspartate, dipotassium myristoyl aspartate, dipotassium cocoyl aspartate, dipotassium caproyl aspartate, and mixtures thereof.

[0196] Reference may be made to commercially available amino acid surfactants, for example: • sarcosinates, such as sodium lauroyl sarcosinate, sold under the name Sarkosyl NL 97® by Ciba or sold under the name Oramix L 30® by Seppic, sodium myristoyl sarcosinate, sold under the name Nikkol Sarcosinate MN® by Nikkol, or sodium palmitoyl sarcosinate, sold under the name Nikkol Sarcosinate PN® by Nikkol; • alaninates, such as sodium N-lauroyl-N-methylamidopropionate, sold under the name Sodium Nikkol Alaninate LN 30® by Nikkol or sold under the name Alanone ALE® by Kawaken, or triethanolamine N-lauroyl-N-methylalanine, sold under the name Alanone ALTA® by Kawaken; or sodium cocoyl alaninates, sold under the name Amilite® ACS-12 by Ajinomoto; • glutamates, such as triethanolamine monococoyl glutamate, sold under the name Acylglutamate CT-12® by Ajinomoto, triethanolamine lauroyl glutamate, sold under the name Acylglutamate LT-12® by Ajinomoto; disodium glutamates, disodium stearoyl glutamate sold under the name Amisoft® HS-21P by Ajinomoto, and mixtures thereof; sodium cocoyl glutamate, sold under the name Plantapon® Amino SF-N by BASF Japan; disodium cocoyl glutamate, sold under the name Plantapon® Amino SCG-L by BASF Japan; and disodium / sodium cocoyl glutamate, sold under the name Amisoft® CS-22 by Ajinomoto; • aspartates, such as the mixture of triethanolamine N-lauroyl aspartate and triethanolamine N-myristoylaspartate, sold under the name Asparack® by Mitsubishi; • glycine derivatives (glycinates), such as sodium N-cocoyl glycinate, sold under the names Amilite GCS-12® and Amilite GCK 12 by Ajinomoto; • citrates, such as the citric monoester of oxyethylenated coconut alcohols (9 mol) sold under the name Witconol EC 1129 by Goldschmidt; and • galacturonates, such as sodium dodecyl-galactoside-uronate, sold by Soliance.

[0197] Taurate surfactant

[0198] The term "taurate surfactant" herein refers to an anionic surfactant comprising at least one taurate moiety. The taurate surfactant may also be referred to as a taurate-based surfactant.

[0199] The taurate surfactant is preferably an acyl taurate, more preferably an N-acyl taurate, and even more preferably an N-acyl methyl taurate (i.e. N-acyl-N-methyltaurate).

[0200] Taurate surfactants include those of formula I, below:

[0201]

[0202]

[0203]

[0204]

[0205] in which • R7 is (C8-C22)alkyl; • R8 is H or (Ci-C4)alkyl; • R9 and R10 are each independently H or (Ci-C4)alkyl; and • M+ is a sodium, potassium or ammonium cation. The taurate surfactant may be selected from the group consisting of taurate, caproyl taurate, lauroyl taurate, myristoyl taurate, palmitoyl taurate, stearoyl taurate, oleoyl taurate, cocoyl taurate, methyl taurate, coconut oil fatty acid methyl taurate, palm kernel oil fatty acid methyl taurate, hydrogenated palm kernel oil fatty acid methyl taurate, hydrogenated palm kernel fatty acid methyl taurate, hydrogenated beef tallow fatty acid methyl taurate, caproyl methyl taurate, lauroyl methyl taurate, myristoyl methyl taurate, palmitoyl methyl taurate, stearoyl methyl taurate, oleoyl methyl taurate, cocoyl methyl taurate, methyltaurine cocoyl methyl taurate and salts thereof. For example, taurate surfactants include sodium methyl lauroyl taurate, sodium methyl myristoyl taurate, potassium methyl myristoyl taurate, sodium methyl cocoyl taurate, sodium methyl oleoyl taurate, calcium methyl lauroyl taurate, potassium methyl lauroyl taurate, and ammonium methyl lauroyl taurate. Similarly, in some cases, the taurate surfactant is sodium methyl cocoyl taurate. Examples of the taurate surfactant include, but are not limited to: • palm kernel oil methyltaurate sodium salt, sold as Hostapon CT Pâté® by Clariant; • Sodium N-cocoyl-N-methyltaurate, sold under the name Hostapon LT-SF® by Clariant or sold under the name Nikkol CMT-30-T® by Nikkol; • sodium methyl stearoyl taurate sold under the name Nikkol SMT®; and • sodium palmitoyl methyltaurate, sold under the name Nikkol PMT® by Nikkol. The amount of the anionic surfactant(s) in the composition according to the present invention may be 0.5% by weight or more, preferably 1% by weight or more, and more preferably 2% by weight or more, relative to the weight total composition.

[0206] The amount of the anionic surfactant(s) in the composition according to the present invention may be 20% by weight or less, preferably 15% by weight or less, and more preferably 10% by weight or less, relative to the total weight of the composition.

[0207] The amount of the anionic surfactant(s) in the composition according to the present invention may be from 0.5% to 20% by weight, preferably from 1% to 15% by weight, and more preferably from 2% to 10% by weight, relative to the total weight of the composition.

[0208] - Amphoteric surfactant

[0209] The composition according to the present invention may or may not comprise at least one amphoteric surfactant. Only one type of amphoteric surfactant may be used, but two or more different types of amphoteric surfactants may be used in combination.

[0210] The amphoteric or zwitterionic surfactants may be, for example (non-limiting list), amine derivatives such as aliphatic secondary or tertiary amine, and optionally quaternized amine derivatives, in which the aliphatic radical is a linear or branched chain comprising 8 to 22 carbon atoms and containing at least one water-soluble anionic group (for example, carboxylate, sulfonate, sulfate, phosphate or phosphonate).

[0211] The amphoteric surfactant may preferably be selected from the group consisting of betaines and amidoaminecarboxylated derivatives.

[0212] The amphoteric surfactant may be chosen from betaine-type surfactants.

[0213] The betaine-type amphoteric surfactant may be selected from the group consisting of alkylbetaines, alkylamidoalkylbetaines, sulfobetaines, alkylsulfobetaines, phosphobetaines, alkylphosphobetaines and alkylamidoalkylsulfobetaines, in particular, (C8-C24)alkylbetaines, (C8-C24)alkylamido(Ci-C8)alkylbetaines, sulfobetaines, (Ci-C8)alkylsulfobetaines, phosphobetaines, (Ci-C8)alkylphosphobetaines, and (C8-C24)alkylamido(Ci-C8)alkylsulfobetaines. In one embodiment, the betaine-type amphoteric surfactants are selected from (C8-C24)alkylbetaines, (C8-C24)alkylamido(Ci-C8)alkylsulfobetaines, sulfobetaines, (Ci-C8)alkylsulfobetaines and phosphobetaines.

[0214] Non-limiting examples that may be cited include compounds classified in the CTFA International Cosmetic Ingredient Dictionary & Handbook, 15th Edition, 2014, as cocobetaine, laurylbetaine, cetylbetaine, coco / oleamidopropylbetaine, cocamidopropylbetaine, palmitamidopropylbetaine, stearami-dopropylbetaine, cocamidoethylbetaine, cocamidopropylhydroxysultaine, oleamido-propylhydroxysultaine, cocohydroxysultaine, laurylhydroxysultaine, and cocosultaine, alone or in mixtures.

[0215] The betaine-type amphoteric surfactant (betaines) may be an alkylbetaine, an al-kylsulfobetaine, and an alkylamidoalkylbetaine, in particular cocobetaine, sulfo-propylbetaine and cocamidopropylbetaine.

[0216] Among the carboxylated amidoamine derivatives, mention may be made of the products marketed under the name Miranol, as described in U.S. Patent Nos. 2,528,378 and 2,781,354 and classified in the CTFA dictionary, 3rd edition, 1982 (the disclosures of which are incorporated herein by reference), under the names Amphocarboxy-glycinates and Amphocarboxypropionates, with the respective structures:

[0217] R1-CONHCH2CH2-N+(R2)(R3)(CH2COO) M+

[0218] in which:

[0219] Ri denotes an alkyl radical of an acid RrCOOH present in hydrolyzed coconut oil, a heptyl, nonyl or undecyl radical,

[0220] R2 denotes a beta-hydroxyethyl group,

[0221] R3 denotes a carboxymethyl group,

[0222] M+ denotes a cationic ion derived from an alkali metal such as sodium; an ammonium ion; or an ion derived from an organic amine;

[0223] X denotes an organic or inorganic anionic ion such as halides, acetates, phosphates, nitrates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)- or alkyl(Ci-C4)aryl-sulfonates, in particular methylsulfate and ethylsulfate; or M+ and X are not present;

[0224] R1'-CONCH2CH2-N(B)(C) (B2)

[0225] in which:

[0226] R / denotes an alkyl radical of an acid R / -COOH present in coconut oil or in hydrolyzed linseed oil, an alkyl radical, such as a C7, C9, Cn or C13 alkyl radical, a Cp alkyl radical and its isoform, or an unsaturated Cp radical,

[0227] B represents -CH2CH2OX',

[0228] C represents -(CH2)Z-Y', with z=1 or 2,

[0229] X' denotes a group -CH2-COOH, -CH2-COOZ', -CH2CH2-COOH, -CH2CH2 -COOZ' or a hydrogen atom, and

[0230] Y' denotes a radical -COOH, -COOZ', -CH2-CHOH-SO3Z', -CH2-CHOH-SO3H or a radical -CH2-CH(OH)-SO3-Z',

[0231] where Z' represents an ion of an alkali or alkaline earth metal such as sodium, an ion derived from an organic amine or an ammonium ion;

[0232] and

[0233] Ra-NH-CH(Y”)-(CH2)nC(O)-NH-(CH2)nN(Rd)(Re) (B'2)

[0234] in which:

[0235] Y" denotes -C(O)OH, -C(O)OZ", -CH2-CH(OH)-SO3H or -CH2-CH(OH)-SO3-Z", in which Z" denotes a cationic ion derived from an alkali or alkaline earth metal such as sodium, an organic amine-derived ion, or an ammonium ion;

[0236] Rd and Re denote a C1-C4 alkyl or C1-C4 hydroxyalkyl radical;

[0237] Ra denotes a Cio-C3o alkyl or alkenyl group of an acid, and

[0238] n and n' independently denote an integer from 1 to 3.

[0239] The amphoteric surfactant of formula B1 and B2 may be chosen from (C8-C24)-alkyl amphomonoacetates, (C8-C24)alkyl amphodiacetates, (C8-C24)alkyl am-phomonopropionates and (C8-C24)alkyl amphodipropionates.

[0240] These compounds are classified in the CTFA dictionary, 5th edition, 1993, under the names Disodium Cocoamphodiacetate, Disodium Lauroamphodiacetate, Disodium Caprylamphodiacetate, Disodium Capryloamphodiacetate, Disodium Cocoamphodipropionate, Disodium Lauroamphopropionate, Disodium Caprylamphodipropionate, Disodium Caprylamphodipropionate, Lau-roamphodipropionic acid and Cocoamphodipropionic acid.

[0241] As an example, we can cite cocoamphodiacetate sold by the company Rhodia Chimie under the trade name Miranol® C2M Concentrate.

[0242] Among the compounds of formula (B'2), mention may be made of sodium diethylaminopropyl co-coaspartamide (CTFA) marketed by CHIMEX under the name CHIMEXANE HB.

[0243] The amount of the amphoteric surfactant(s) in the composition according to the present invention may be 0.01% by weight or more, preferably 0.1% by weight or more, and more preferably 1% by weight or more, relative to the total weight of the composition.

[0244] The amount of the amphoteric surfactant(s) in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less and more preferably 5% by weight or less, relative to the total weight of the composition.

[0245] The amount of the amphoteric surfactant(s) in the composition according to the present invention may be from 0.01% to 15% by weight, preferably from 0.1% to 10% by weight and, more preferably, from 1% to 5% by weight, relative to the total weight of the composition.

[0246] In one embodiment of the present invention, the total amount of surfactants including the (b) glycolipid(s) and the optional anionic surfactant(s) in the composition is not particularly limited, but generally from 3 to 30% by weight, preferably from 5 to 25% by weight, and more preferably from 7 to 20% by weight, relative to the total weight of the composition.

[0247] In another embodiment of the present invention, the weight ratio of the (b) glycolipid(s) to the total amount of surfactants other than the (b) glycolipid(s), such as anionic surfactants as explained above, included in the composition may be from 10:1 to 1:5, preferably from 5:1 to 1:3, and more preferably from 3:1 to 1:2. In another embodiment, the composition according to the present invention comprises the (b) glycolipid(s) in an amount equal to or greater than the total amount of surfactants other than the (b) glycolipid(s), such as anionic surfactants.

[0248] - pH correction agent

[0249] The pH of the composition according to the present invention can be corrected to the desired value by using at least one pH correcting agent, such as an acidifying agent or a basifying agent, for example, which are commonly used in cosmetic products.

[0250] The pH of the composition according to the present invention may be from 4 to 8, preferably from 4.5 to 7.5 and, more preferably, from 5 to 7.

[0251] Among the acidifying agents, mention may be made, by way of example, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, citric acid, lactic acid, sulfonic acids.

[0252] The pH correction agent(s) may be used in an amount ranging from 0.001% to 10% by weight, and preferably from 0.01% to 5% by weight, relative to the total weight of the composition.

[0253] The pH value of the composition according to the present invention is not particularly limited, however, in general, it ranges from 3 to 9, and preferably from 4 to 8.

[0254] - Optional ingredient

[0255] The composition according to the present invention may comprise, in addition to the above-mentioned ingredients, optional ingredient(s) generally used in cosmetic products, in particular, surfactants / emulsifiers other than (b) glycolipid; hydrophilic or lipophilic thickeners derived, for example, from synthetic thickeners; volatile or non-volatile organic solvents such as ethanol; polyols such as glycerin, pentylene glycol, dipropylene glycol, propylene glycol, butylene glycol, propanediol and sorbitol; anionic polymers; amphoteric polymers; non-ionic polymers such as beta-glucan; silicones and silicone derivatives; fatty acids having from 6 to 24 carbon atoms; natural extracts derived from animals or plants other than (a) cationic polymer; waxes; preservatives such as caprylyl glycol, phenoxyethanol;antioxidants such as tocopherol; salts such as NaCl; and the like, within a range that does not affect the effects of the present invention.;

[0256] The composition according to the present invention may comprise the above optional ingredient(s) in an amount of 0.01% to 30% by weight, preferably 0.05% to 20% by weight, and more preferably 0.1% to 10% by weight, for example relative to the total weight of the composition. [Preparation]

[0257] The composition according to the present invention can be prepared by mixing the essential ingredient(s) as explained above, and the optional ingredient(s), if necessary, as explained above.

[0258] The method and means for mixing the above essential and optional ingredients are not limited. Any conventional method and means can be used for mixing the above essential and optional ingredients to prepare the composition according to the present invention.

[0259] The composition according to the present invention can be prepared by simple or easy mixing with a conventional mixing means such as a stirrer and a homogenizer. In addition, heating may not be necessary. Therefore, the method for preparing the composition according to the present invention can be environmentally friendly. [Shape]

[0260] The composition according to the present invention may be present in any form.

[0261] For example, the composition according to the present invention may be in the form of a solution, in particular an aqueous solution, a tonic, a serum or a lotion.

[0262] In another embodiment, the composition of the present invention may be in the form of a solution. In this embodiment, the composition of the present invention may be packaged with an automatic foam pump that allows consumers to use the composition as a foam.

[0263] The composition according to the present invention, before being diluted, may have a transparent or translucent appearance, preferably a transparent appearance.

[0264] Transparency may be measured by turbidity measurement (e.g., with the HACH 2100Q portable turbidimeter). The turbidity of the composition according to the present invention may be less than 400 NTU (translucent), preferably less than 350 NTU, more preferably less than 300 NTU (transparent). [Cosmetic application]

[0265] The composition according to the present invention may be intended to be used as a cosmetic composition. Thus, the cosmetic composition according to the present invention may be intended to be applied to a keratinous substance. Keratinous substance herein refers to a material containing keratin as a main constituent element and, examples thereof include skin, scalp, lips, hair or body hair and the like. Thus, it is preferable that the composition cosmetic according to the present invention is used for a cosmetic process for keratinous substance, in particular the skin.

[0266] Thus, the cosmetic composition according to the present invention may be a cosmetic composition for the skin, preferably a cosmetic skin care composition and more preferably a cosmetic facial care composition.

[0267] In particular, the composition according to the present invention is useful for cleansing. Thus, it is preferable that the composition according to the present invention is a cleansing composition, more preferably a skin cleansing composition, and even more preferably a facial cleansing composition. [Cosmetic process and use]

[0268] The present invention also relates to: • a cosmetic process for a keratinous substance such as skin, comprising: applying to the keratinous substance the composition according to the present invention; and optionally removing the composition from the keratinous substance,

[0269] or • a use of the composition according to the present invention for the care or cleaning of a keratinous material such as the skin.

[0270] The cosmetic process here designates a non-therapeutic cosmetic process, such as for a cosmetic process for caring for and / or cleaning the surface of a keratinous substance such as the skin.

[0271] The removal step in the cosmetic process according to the present invention may be carried out, for example, by rinsing the composition according to the present invention with water from a keratinous substance such as skin.

[0272] If the removal step is not carried out, the cosmetic method according to the present invention may be useful for the care of a keratinous substance such as the skin, since the (b) glycolipids may confer anti-inflammatory, anti-allergic or antibacterial properties on the keratinous substance, which would be useful, in particular, for the care of acne-prone skin or sensitive skin.

[0273] If the removal step is carried out, the cosmetic method according to the present invention can be useful for cleaning a keratinous substance such as skin, since the (b) glycolipids can function as a surfactant.

[0274] If the composition according to the present invention is diluted with water, the composition according to the present invention may cause precipitation.

[0275] Thus, before or after the step of applying the composition according to the present invention to a keratinous substance such as the skin, if the keratinous substance is wetted with water, the composition according to the present invention may cause precipitates on the keratinous substance.

[0276] On the other hand, before the step of removing the composition according to the present invention from a keratinous substance such as skin, if the keratinous substance is wetted with water, the composition according to the present invention may also cause precipitation on the keratinous substance.

[0277] Therefore, it is preferable that a keratinous substance such as skin is wetted with water before or after the step of applying the composition according to the present invention to the keratinous substance, or before removing the composition according to the present invention from the keratinous substance.

[0278] The precipitates include (b) glycolipids, and therefore, they can provide a keratinous substance such as skin with various benefits such as anti-inflammatory, anti-allergic or antibacterial properties, which would be useful for, in particular, acne-prone skin and sensitive skin.

[0279] Furthermore, the precipitates include (b) glycolipids which can function as surfactants. Therefore, the precipitates can be effectively used for cleaning a keratinous substance such as skin, by further rinsing the precipitates from the keratinous substance with water, which would be preferable for cleaning the keratinous substance, especially for removing makeup from the keratinous substance such as skin.

[0280] The present invention may also relate to a use of (a) at least one cationic polymer chosen from polylysines having a molecular weight of less than 20,000, preferably less than 15,000 and more preferably less than 10,000, in a composition comprising (b) at least one glycolipid, in order to provide precipitates of which the (b) glycolipid during dilution of the composition.

[0281] The above explanations concerning the (a) cationic polymer, the (b) glycolipid for the composition according to the present invention, can be applied to those of the above use. EXAMPLES

[0282] The present invention will be described in more detail by way of examples. However, these examples should not be construed as limiting the scope of the present invention.

[0283] Examples 1-20 and Comparative Examples 1-7 [Preparations]

[0284] Each of the compositions according to Examples 1-20 and Comparative Examples 1-7 was prepared by mixing the ingredients listed in Tables 1 to 5. The numerical values ​​of the amounts of the ingredients in Table 1 are all based on a “% by weight” of starting materials. Epsilon-poly-L-lysines (Mw: about 4700 Da, PL-25, obtained from JNC corporation) were used as polylysine. As glycolipid, rhamnolipid surfactant was used, which was obtained from EVONIK (product name: RHEANCE® One) [Evaluation] (Appearance and condition)

[0285] The appearance of each of the compositions immediately after preparation was observed with the naked eye, and the appearance was evaluated based on the following criteria.

[0286] Good: the appearance was transparent.

[0287] Bad: The appearance was cloudy.

[0288] Very bad: precipitation was observed.

[0289] Similarly, the condition of each of the compositions according to Example 1 and Comparative Examples 1 to 3 are shown in Table 1. (Dilution test)

[0290] Each of the compositions was diluted with water to 5 times the volume at room temperature (25°C). The dilution test simulates the use of the composition according to the present invention in wet conditions such as those of a bathroom.

[0291] Precipitation in each composition was visually assessed according to the following criteria

[0292] Very good: precipitation was observed from a transparent appearance.

[0293] Good: The appearance changed from transparent to hazy or precipitation was observed from a hazy appearance.

[0294] Bad: No change in appearance was observed.

[0295] The more precipitation is caused in the dilution test, the more the composition according to the present invention can provide a keratinous substance with a depot comprising glycolipids. This is beneficial because glycolipids have various bioactivities, such as anti-inflammation efficacy, anti-allergic efficacy and antibacterial efficacy, and can also provide a moisturizing texture.

[0296] The results are shown in Tables 1 to 5 below. Ingredient Ex. 1 Ex. Comp. 1 Ex. Comp. 2 Ex. Comp. 3 Polylysine 0.1 - - - Polyquatemium-67 - 0.1 - - Hydroxypropyl guar hydroxypropyltriammonium chloride - - 0.1 - Guar hydroxypro-pyltrimonium chloride - - - 0.1 Rhamnolipid 8 8 8 8 Disodium / sodium cocoyl glutamate 2.6 2.6 2.6 2.6 Citric acid 0.5 0.1 0.4 0.4 Water qs 100 qs 100 qs 100 qs 100 PH Assessment 5.5 5.5 5.5 5.5 Appearance Good Good Good Good Condition Liquid Gel Gel Gel Dilution Test Very Good Good Good Ingredient Ex. 2 Ex. Comp. 4 Ex. Comp. 5 Ex. Comp. 6 Ex. Comp. 7 Polylysine 0.3 0.3 0.3 0.3 0.3 Rhamnolipid 20 - - - - Disodium / Sodium Cocoyl Glutamate - 20 - - - Sodium Methyl Cocoyl Taurate - - 15 - - Sodium Methyl Cocoyl Alaninate - - - 20 - Sodium Methyl Cocoyl Glycinate - - - - 20 Coconut Acid - - 1.5 - - Sodium Chloride - - 3.5 - - Water qs 100 qs 100 qs 100 qs 100 qs 100 PH Rating 5.6 5.6 5.6 5.6 5.6 Appearance Good Good Good Good Good Dilution Test Very Good Poor Poor Poor Poor Ingredient Ex. 3 Ex. 4 Ex. 5 Ex. 6 Ex. 7 Polylysine 0.3 0.1 0.1 0.1 0.1 Rhamnolipid 5.5 8 8 8 8 Disodium / Sodium Cocoyl Glutamate 2.3 2.6 2.6 2.6 2.6 Sodium Methyl Cocoyl Taurate 1.725 - - - - Coconut Acid 0.345 - - - - Sodium Chloride 0.23 - - - - Phytic Acid 0.6 0.4 - - - Polyphosphoric Acid - - 0.4 - - Citric Acid - - - 0.5 - HCl - - - - 0.2 Water qs 100 qs 100 qs 100 qs 100 qs 100 PH Rating 5.5 5.5 5.5 5.5 5.5 Appearance Good Good Good Good Good Dilution test Very good Very good Very good Very good Very good Ingredient Ex. 8 Ex. 9 Ex. 10 Ex. 11 Ex. 12 Ex. 13 Ex. 14 Polylysine 0.3 0.8 0.3 2 0.3 0.3 0.3 Rhamnolipid 5.5 7 5.5 8 5.5 7.4 9.2 Disodium / Sodium Cocoyl Glutamate 2.3 1.5 4 1 2.3 3 3.8 Sodium Methyl Cocoyl Taurate 1.725 1.125 - - 1.725 2.25 2.85 Coconut Acid 0.345 0.225 - - 0.345 0.45 0.57 Sodium Chloride 0.23 0.15 - - 0.23 0.3 0.38 Phytic Acid 1.7 - - - 0.6 0.6 - Citric acid - - 0.4 - - - - Water qs 100 qs 100 qs 100 qs 100 qs 100 qs 100 qs 100 Evaluation PH 4 7 5.5 8 5.5 5.5 5.5 Appearance Good Good Good Good Good Good Dilution test Very good Good Very good Good Very good Very good Very good Ingredient Ex. 15 Ex. 16 Ex. 17 Ex. 18 Ex. 19 Ex. 20 Polylysine 0.3 0.3 0.3 0.1 0.2 0.8 Rhamnolipid 5.5 4.1 6.9 5.5 5.5 5.5 Disodium / Sodium Cocoyl Glutamate 2.3 3 1.6 2.3 2.3 3.5 Sodium Methyl Cocoyl Taurate 1.725 2.25 1.2 1.725 1.725 2.625 Coconut Acid 0.345 0.45 0.24 0.345 0.345 0.525 Sodium Chloride 0.23 0.3 0.16 0.23 0.23 0.35 Phytic Acid 0.6 0.8 0.8 0.6 0.6 0.7 Water qs 100 qs 100 qs 100 qs 100 qs 100 qs 100 Evaluation PH 5.5 5.5 5.5 5.5 5.5 5.5 Appearance Good Good Good Good Good Dilution test Very good Good Very good Very good Very good Good

[0302] As can be seen from the tables, the compositions according to Examples 1 to 20, which include the specific combination of the ingredients of (a) cationic polymer and (b) glycolipid, exhibited a transparent appearance and good results in the dilution test. The good results of the dilution test indicate that the composition can effectively provide a keratinous substance such as skin with a depot including glycolipids, and thus offers a variety of bioactivities, such as anti-inflammation efficacy, anti-allergic efficacy and antibacterial efficacy as well as an enhanced moisturizing texture.

[0303] On the other hand, the compositions according to Comparative Examples 1 to 7, which do not include the specific combination of the present invention, could not exhibit a transparent appearance and / or good results in the dilution test.

[0304] Furthermore, the composition including polylysine as (a) cationic polymer (Example 1) was in a liquid state, which is beneficial because it can be easily spread on keratinous substances, such as skin. On the other hand, the compositions including other cationic polymers (Comparative Examples 1 to 3) gelled and did not stick to the skin. Thus, the composition according to the present invention has superior deposition properties.

[0305] Accordingly, it can be said that the composition according to the present invention is very suitable as a cosmetic composition for the care and / or cleaning of keratinous substances, since it can offer a bioactive benefit produced from glycolipids to keratinous substances while having a transparent appearance.

Claims

Claims

1. Composition, preferably cosmetic composition, and more preferably cosmetic composition for the skin, comprising (a) at least one cationic polymer chosen from polylysines; and (b) at least one glycolipid in which the cationic polymer has a molecular weight of less than 20,000, preferably less than 15,000 and, more preferably, less than 10,000.

2. A composition according to claim 1, wherein the (a) cationic polymer has a molecular weight of more than 1000, preferably more than 1500, and more preferably more than 2000.

3. Composition according to any one of the preceding claims, in which the (b) glycolipid is chosen from rhamnolipids.

4. A composition according to any preceding claim, wherein the composition further comprises at least one acid having two or more pKa values ​​or a salt thereof.

5. A composition according to any preceding claim, wherein the composition further comprises at least one anionic surfactant selected from amino acid surfactants and taurate surfactants.

6. A method according to any one of the preceding claims, wherein the total amount of surfactants including the (b) glycolipid(s) in the composition is from 3 to 30% by weight, preferably from 5 to 25% by weight, and more preferably from 7 to 20% by weight, relative to the total weight of the composition.

7. A composition according to any preceding claim, wherein the weight ratio of the (b) glycolipid(s) to the total amount of surfactants other than the (b) glycolipid(s) in the composition is from 10:1 to 1:5, preferably from 5:1 to 1:3, and more preferably from 3:1 to 1:

2.

8. Composition according to any one of the preceding claims, in which the pH of the composition is from 4 to 8, preferably from 4.5 to 7.5 and, more preferably, from 5 to 7.

9. A composition according to any preceding claim, which is a cleansing composition, preferably a skin cleansing composition and, more preferably, a composition facial cleanser.

10. A cosmetic process for a keratinous substance such as skin, comprising: the application to the keratinous substance of the composition according to any one of claims 1 to 9; and possibly the elimination of the composition of the keratinous substance.

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