Composition containing low-molecular-weight chitosan and glycolipid

Abstract

To provide a composition that supplies keratin substances, such as skin, with deposits containing glycolipids, where the composition may contain at least one environmentally compatible component.SOLUTION: A composition contains (a) at least one cationic polymer selected from chitosans and (b) at least one glycolipid, where the molecular weight of the cationic polymer is less than 20,000, preferably less than 15,000, more preferably less than 10,000.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a composition comprising low molecular weight chitosan and a glycolipid, as well as to cosmetic methods employing said composition and uses relating to said composition. [Background technology]

[0002] Environmentally compatible cosmetic formulations, which are designed and developed with environmental issues in mind, have become a major goal to meet global challenges.

[0003] It is therefore essential to propose more sustainable compositions, preparation methods and ingredients to address these environmental issues.

[0004] In this context, it is important to develop new cosmetic compositions that have a better carbon footprint, in particular by promoting the use of renewable raw materials and / or materials with a good natural index and / or materials of natural origin, more particularly materials of plant origin, while reducing the use of compounds of petrochemical origin.

[0005] Glycolipids such as rhamnolipids are known to have unique biological activities, such as anti-inflammatory, anti-allergic and antibacterial effects.

[0006] WO2020 / 178048 discloses the use of glycolipids as adhesion promoters for several substances. However, WO2020 / 178048 does not mention low molecular weight chitosan. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] WO2020 / 178048 [Patent Document 2] WO03 / 068824 [Patent Document 3] US Patent Application Publication No. 2008 / 0200704

Non-Patent Literature

[0008]

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[0009] There is a need for compositions capable of providing a deposit that includes glycolipids to keratinous materials, such as the skin.

[0010] A first object of the present invention is to provide a composition capable of providing a deposit comprising a glycolipid to keratinous materials such as the skin.

[0011] Additionally, a second object of the present invention is to provide a composition that can include at least one environmentally compatible ingredient. [Means for solving the problem]

[0012] The above object of the present invention is to (a) at least one cationic polymer selected from chitosan, and (b) at least one glycolipid A composition, preferably a cosmetic composition, more preferably a cosmetic composition for keratinous materials such as the skin, comprising: This can be accomplished by a composition in which 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.

[0013] The amount of the (a) cationic polymer in the composition of the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, based on the total mass of the composition.

[0014] (b) The glycolipid may be selected from rhamnolipids.

[0015] The amount of the (b) glycolipid in the composition of the present invention may be 0.01% by mass to 15% by mass, preferably 0.1% by mass to 10% by mass, and more preferably 1% by mass to 5% by mass, relative to the total mass of the composition.

[0016] The composition of the present invention may further comprise (c) water.

[0017] The compositions of the present invention may further comprise (d) at least one amphoteric surfactant.

[0018] The amount of the amphoteric surfactant (d) in the composition of the present invention may be 0.01% by mass to 20% by mass, preferably 0.1% by mass to 15% by mass, and more preferably 1% by mass to 10% by mass, relative to the total mass of the composition.

[0019] The compositions of the present invention may further comprise (e) at least one amino acid surfactant.

[0020] The amount of the (e) amino acid surfactant in the composition of the present invention may be 0.01% by mass to 20% by mass, preferably 0.1% by mass to 15% by mass, and more preferably 1% by mass to 10% by mass, relative to the total mass of the composition.

[0021] The compositions of the present invention may further comprise (f) at least one monovalent non-polymeric acid or salt thereof, preferably a monovalent non-polymeric carboxylic acid, more preferably a monovalent hydroxy acid, such as lactic acid and salicylic acid.

[0022] The amount of (f) monovalent non-polymeric acid or its salt in the composition of the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, relative to the total mass of the composition.

[0023] The pH of the composition of the present invention may be 4-8, preferably 4.5-7.5, and more preferably 5-7.

[0024] The composition of the present invention may be a cleansing composition, preferably a cleansing composition for the skin, more preferably a cleansing composition for the face.

[0025] The present invention also provides a cosmetic method for keratinous materials, such as the skin, comprising the steps of: applying a composition of the present invention to a keratinous material; Optionally, removing the composition from the keratinous material. The present invention also relates to a cosmetic method including:

[0026] The present invention also relates to the use of at least one cationic polymer selected from (a) chitosan having a molecular weight of less than 20,000, preferably less than 15,000, more preferably less than 10,000, in a composition comprising (b) at least one glycolipid, The present invention also relates to use of the composition for producing a precipitate containing the glycolipid (b) when the composition is diluted with water. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] After extensive investigation, the inventors have discovered that it is possible to provide a composition which is capable of providing a deposit comprising a glycolipid to a keratinous material such as the skin and which may comprise at least one environmentally compatible ingredient.

[0028] The composition of the present invention comprises (a) at least one cationic polymer selected from chitosan, and (b) at least one glycolipid Including, (a) The cationic polymer has a molecular weight of less than 20,000, preferably less than 15,000, and more preferably less than 10,000.

[0029] The compositions of the present invention can provide a deposit comprising a glycolipid on keratinous materials such as the skin. The deposit can be provided, for example, by a precipitate comprising a glycolipid formed in the compositions of the present invention.

[0030] Additionally, preferred embodiments of the compositions of the present invention are capable of providing enhanced deposition or deposition on keratinous materials such as skin.

[0031] Since glycolipids such as rhamnolipids have biological activity, such as anti-inflammatory, anti-allergic and antibacterial effects, the deposits containing (b) glycolipids provided by the compositions of the present invention are useful for the care of keratinous materials such as skin. In particular, the compositions of the present invention are useful for the treatment or care of skin with acne.

[0032] Furthermore, because glycolipids can function as surfactants, (b) deposits containing glycolipids can provide enhanced cleansing effects, making the compositions of the present invention also useful for cleansing keratinous materials such as skin.

[0033] Since chitosan can be obtained from natural resources, (a) the cationic polymer is an environmentally compatible component. Therefore, the composition of the present invention can include an environmentally compatible component. In addition, (b) the glycolipid can originate from a renewable material, such as a biodegradable material. Therefore, the composition of the present invention can be environmentally compatible.

[0034] The present invention will now be described in more detail.

[0035] [Composition] (cationic polymer) The composition of the present invention comprises (a) at least one cationic polymer. A single type of cationic polymer may be used, but two or more different types of cationic polymers may also be used in combination.

[0036] The cationic polymer has a positive charge density. The charge density of the (a) cationic polymer may be 0.01 meq / g to 20 meq / g, preferably 0.05 to 15 meq / g, and more preferably 0.1 to 10 meq / g.

[0037] According to the invention, the (a) cationic polymer is selected from chitosan. Two or more chitosans may be used in combination.

[0038] The (a) cationic polymer is preferably selected from chitosan.

[0039] The molecular weight (Da) of the (a) cationic polymer is less than 20,000, preferably less than 15,000, more preferably less than 10,000. In other words, the (a) cationic polymer is a low molecular weight chitosan.

[0040] (a) The molecular weight (Da) of the cationic polymer may be greater than 1,000, preferably greater than 1,500, and more preferably greater than 2,000.

[0041] (a) The molecular weight (Da) of the cationic polymer may be greater than 1,000 and less than 20,000, preferably greater than 1,500 and less than 15,000, more preferably greater than 2,000 and less than 10,000.

[0042] Unless otherwise defined in the description, "molecular weight" means the weight average molecular weight. Molecular weight can be measured or determined, for example, by gel permeation chromatography according to ASTM D5296-19.

[0043] Chitosan is very rare in nature: it has only been reported in the exoskeletons of certain insects, such as termite queens, and in the cell walls of a certain class of fungi, the Zygomycetes.

[0044] Chitosan can be obtained by deacetylation of chitin, a polysaccharide composed of several N-acetyl-D-glucosamine units linked together by β-type bonds (1,4).

[0045] The idealized chemical structure of chitosan is a sequence of β-D-glucosamine monomers linked by glycosidic bonds (1→4).

[0046] "Chitosan" in the present invention means any copolymer formed from the building blocks N-acetyl-D-glucosamine and D-glucosamine, the degree of acetylation of which is less than 90%, preferably less than 80%, preferably less than 70%, preferably less than 60%, preferably less than 50%. Chitosan consists of glucosamine sugar units (deacetylated units) and N-acetyl-D-glucosamine units (acetylated units) linked together by β-type bonds (1,4), and is a polymer of the poly(N-acetyl-D-glucosamine)-poly(D-glucosamine) type.

[0047] More preferably, the degree of acetylation of chitosan is not more than 40%, preferably not more than 35%, preferably not more than 25%, preferably not more than 15%, preferably not more than 10%.

[0048] The degree of acetylation is the percentage of acetylated units relative to the total number of units and can be determined by Fourier transform infrared spectroscopy (FT-IR) or titration with a strong base.

[0049] Chitosan in the present invention is preferably a polysaccharide prepared from fungal sources, particularly chitosan extracted and purified from safe and abundant food or biotechnological fungal sources such as mushroom (Agaricus bisporus) or Aspergillus niger).

[0050] The chitosan of the present invention is preferably derived from the mycelium of fungi of the Ascomycete type, in particular Aspergillus niger and / or Basidiomycete fungus, in particular Lentinula edodes and / or Agaricus bisporus. Preferably, the fungus is Aspergillus niger.

[0051] The chitosan may be of Genetically Modified Organisms (GMO) origin, but is preferably of non-GMO origin.

[0052] The chitosan according to the invention is natural, i.e. unmodified, in particular does not contain any chemical modifications.

[0053] One method for preparing chitosan is that described in WO03 / 068824.

[0054] Preferably, the chitosan used in the present invention is in the form of a powder, commercially available under the name GU3511 from Glentham Life Sciences.

[0055] The amount of the (a) cationic polymer in the composition of the present invention may be 0.01% by weight or more, preferably 0.05% by weight or more, more preferably 0.1% by weight or more, based on the total weight of the composition. It may even be more preferred that the amount of the (a) cationic polymer is 1% by weight or more, based on the total weight of the composition.

[0056] The amount of (a) cationic polymer in the composition of the present invention may be 15% by weight or less, preferably 10% by weight or less, more preferably 5% by weight or less, based on the total weight of the composition.

[0057] The amount of the (a) cationic polymer in the composition of the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, more preferably 0.1% by mass to 5% by mass, based on the total mass of the composition. It may be even more preferable that the amount of the (a) cationic polymer is 1% by mass to 5% by mass, based on the total mass of the composition.

[0058] (glycolipids) The composition of 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.

[0059] The term "glycolipid" is understood to mean a compound formed from lipids to which one or more sugar compounds are attached.

[0060] (b) The glycolipid may be selected from glucolipids, sophorolipids, trehalolipids, cellobioselipids, rhamnolipids, and mixtures thereof.

[0061] (b) The glycolipid may preferably be selected from sophorolipids, rhamnolipids, and mixtures thereof, more preferably from rhamnolipids.

[0062] Glucolipids: (b) The glycolipid may be selected from glucolipids that contain a glucose moiety and can be represented by the following general formula (I):

[0063] [ka]

[0064] (In the formula: - R 1represents a hydrogen atom or a cation, - p represents an integer ranging from 1 to 4; - q denotes an integer ranging from 4 to 10, preferably equal to 6).

[0065] Glucolipids can be produced by Alcaligenes sp. MM1.

[0066] Suitable fermentation methods are reviewed in M. Schmidt's PhD thesis (1990), Technical University of Braunschweig, and in Schulz et al. (1991) Z. Naturforsch., 46C, pp. 197-203. The glucolipids are recovered from the fermentation broth by solvent extraction using diethyl ether or dichloromethane:methanol or chloroform:methanol mixtures.

[0067] Sophorolipids: (b) The glycolipid may be selected from sophorolipids that contain a sophorose moiety and can be represented by the following general formula (II):

[0068] [ka]

[0069] (In the formula: - R 3 and R 4 each represents a hydrogen atom or an acetyl group; - R 5 represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon radical having 1 to 9 carbon atoms, preferably methyl, - R 6 represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon group having 1 to 19 carbon atoms, However, R 5 and R 6 The total number of carbon atoms in each of the groups does not exceed 20, and preferably ranges from 14 to 18.

[0070] Sophorolipids are R 7 represents a hydrogen atom, and R 8 represents a hydroxy group OH, or in the form of an open chain free acid, in which the lactone ring is R 7 and R 8 may be incorporated into the compositions of the present invention in either its lactone form, formed between:

[0071] [ka]

[0072] (In the formula: - R 3 , R 4 , R 5 , and R 6 is as defined above, but However, R 3 and R 4 at least one of which represents an acetyl group.

[0073] Sophorolipids can be produced by yeast cells, such as Torulopsis apicola and Torulopsis bombicola cells. Fermentation processes generally use sugars and alkanes as substrates.

[0074] Suitable fermentation methods are reviewed in AP Tulloch, JFT Spencer and PAJ Gorin, Can. J. Chem. (1962), 40, 1326, and in U. Gobbert, S. Lang and F. Wagner, Biotechnology Letters (1984), 6 (4), 225. The product obtained is a mixture of various open-chain sophorolipids and sophorolipid lactones and may be used in the form of a mixture or the required form may be isolated.

[0075] As sophorolipids it is possible to use, for example, those sold under the name Sopholiance S by the company Givaudan and those sold under the name BioToLife by the company BASF.

[0076] Trehalolipids: (b) The glycolipid may be selected from trehalolipids that contain a trehalose fragment and can be represented by the following general formula (IV):

[0077] [ka]

[0078] (In the formula: - R 9 , R 10 , and R 11 represent individually a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon group having 5 to 13 carbon atoms).

[0079] Trehalolipids can be produced by bacterial fermentation using the marine bacterium Arthrobacter sp. Ek1 or the freshwater bacterium Rhodococcus erythropolis. Suitable fermentation methods are provided in 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.

[0080] Cellobiose lipids: (b) The glycolipid may be selected from cellobiose lipids that contain cellobiose fragments and can be represented by the following general formula (V):

[0081] [ka]

[0082] (In the formula: - R 1 represents a hydrogen atom or a cation, - R 12 represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon group having 9 to 15 carbon atoms, preferably 13 carbon atoms, - R 13 represents a hydrogen atom or an acetyl group, - R 14 represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon group having 4 to 16 carbon atoms).

[0083] Cellobiose lipids can be produced by fungal cells of the genus Ustilago. A suitable fermentation method is provided in Frautz, Lang and Wagner (1986), Biotech. Letts., 8, 757-762.

[0084] Rhamnolipids: (b) The glycolipid may be selected from rhamnolipids.

[0085] The compositions of the present invention preferably contain one or more rhamnolipids.

[0086] Rhamnolipids are glycolipids produced by various bacterial species. They consist of one rhamnose fragment (monorhamnolipids) or two rhamnose fragments (dirhamnolipids) linked by glycosidic bonds to one, two or three chains of β-hydroxylated fatty acids that are linked together by ester bonds.

[0087] More specifically, these monorhamnolipids and dirhamnolipids correspond to the following formula (VI):

[0088] [ka]

[0089] (In the formula: m represents an integer equal to 2, 1 or 0, - n represents an integer equal to 1 or 0, R1 and R2 each independently represent the same or different branched or unbranched, substituted or unsubstituted, in particular hydroxy-substituted, saturated or unsaturated, hydrocarbon radicals, preferably mono-, doubly or triply unsaturated alkyl radicals, having from 2 to 24 carbon atoms, preferably from 5 to 13 carbon atoms.

[0090] When n is equal to 0, formula (VI) protects monorhamnolipids, and when n is equal to 1, it protects dirhamnolipids.

[0091] The compositions of the present invention preferably contain at least one dirhamnolipid.

[0092] The composition of the present invention preferably comprises a compound represented by formula (VI), m represents an integer equal to 2, 1 or 0, - n denotes an integer equal to 1, R1 and R2 each independently represent the same or different branched or unbranched, substituted or unsubstituted, in particular hydroxy-substituted, saturated or unsaturated, hydrocarbon radicals, preferably mono-, doubly or triply unsaturated alkyl radicals, having from 2 to 24 carbon atoms, preferably from 5 to 13 carbon atoms. The present invention also includes at least one dirhamnolipid of the formula (I), and further includes salts thereof, solvates thereof, and optical isomers thereof.

[0093] The glycosidic bond between the two rhamnose fragments may be in the alpha or beta configuration, preferably in the alpha configuration.

[0094] In the context of the present invention: The salts of the dirhamnolipid of formula (VI) are more particularly its carboxylates with organic or inorganic cations, in particular with cations chosen from sodium, potassium, calcium and ammonium. The solvate forms of the dirhamnolipid of formula (VI) are more particularly solvates with water or with one or more molecules of an organic solvent, such as hydrates or solvates with linear or branched alcohols, such as ethanol or isopropanol, in which the optically active carbon atoms of the fatty acids are preferably in the form of the R enantiomer. - The term "alkyl" group refers to a saturated linear or branched aliphatic group, e.g., a C1-C2 alkyl group having a linear or branched hydrocarbon chain of 1 to 20 carbon atoms. 20 It is an alkyl group, more specifically, 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.

[0095] The composition of the present invention preferably comprises a compound represented by formula (VI): m represents an integer equal to 2, 1 or 0, - n denotes an integer equal to 1, R1 and R2 are identical or different and are pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl radicals and radicals of the formula (CH2) o CH3 groups, in which o represents an integer ranging from 1 to 23, in particular from 3 to 15, and more particularly from 4 to 12. The dirhamnolipid comprises at least one of the following:

[0096] According to one embodiment of the invention, the composition of the invention comprises at least one dirhamnolipid of general formula (VI), in which m is equal to 1.

[0097] According to one embodiment of the present invention, the composition of the invention comprises a mixture of at least two, preferably at least three, dirhamnolipids of general formula (VI), where m is preferably equal to 1.

[0098] According to another embodiment of the invention, the composition of the invention comprises a mixture comprising at least one monorhamnolipid.

[0099] More preferably, the composition of the present invention has the following formula (VII):

[0100] [ka]

[0101] [In the formula, m represents an integer equal to 2, 1 or 0, preferably m is equal to 1, - n denotes an integer equal to 1, - R1 is -(CH2) p -CH3 group, where p is an integer varying from 1 to 23, preferably from 4 to 12; - R2 is -(CH2) q -CH3 group, where q is an integer varying from 1 to 23, preferably from 4 to 12. The present invention also includes at least one dirhamnolipid of the formula (I), and further includes salts thereof, solvates thereof, and optical isomers thereof.

[0102] Illustrative examples of dirhamnolipids of formula (VII) that may be suitable for the present invention include, but are not limited to, compounds of formula di-RL-CXCY, as defined in Table 1 below.

[0103] The formula di-RL-CXCY is an alternative notation for representing a dirhamnolipid (di-RL) functionalized with two groups R1 and R2, represented by the symbols CX and CY, respectively, where the integers X and Y are equal to p+4 and q+4, respectively.

[0104] [Table 1]

[0105] According to a preferred embodiment, the composition of the invention comprises at least one dirhamnolipid of formula (VII) (also called di-RL-C10C10) in which p and q are identical and equal to 6 and m is equal to 1, or one of its salts, solvates and optical isomers.

[0106] Preferably, the dirhamnolipid 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 of the invention in a proportion of at least 50% by weight, preferably between 51% and 85% by weight, relative to the total weight of rhamnolipids.

[0107] According to another embodiment, the composition of the invention comprises at least one dirhamnolipid of formula (VII) in which m is equal to 1, p is equal to 6 and q is equal to 8.

[0108] According to another embodiment, the composition of the invention comprises at least one dirhamnolipid of formula (VI) where n and m are equal to 1 and R1 is (CH2) o represents a -CH3 group, where o is an integer varying from 4 to 12, and R2 is selected from pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl groups, preferably, R1 represents a -(CH2)6CH3 group and R2 represents a nonenyl group.

[0109] According to another preferred embodiment, the composition of the invention comprises a mixture of at least two, in particular at least three, dirhamnolipids of formula (VI) or formula (VII) selected from: - a dirhamnolipid of formula (VII) in which p and q are identical and equal to 6 and m is equal to 1, - a dirhamnolipid 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 dirhamnolipid of formula (VI) in which n and m are equal to 1 and R1 is (CH2) oR1 represents a -(CH2)6CH3 group, where o is an integer varying from 4 to 12, and R2 is selected from pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl groups, preferably R1 represents a -(CH2)6CH3 group and R2 represents a nonenyl group.

[0110] Preferably, the composition of the invention comprises a mixture of at least two, in particular at least three, dirhamnolipids of formula (VI) or formula (VII) selected from: - at least 50% by weight, preferably between 51% and 85% by weight, of dirhamnolipid 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 dirhamnolipid 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, from 0.5% to 15% by weight, preferably from 3% to 12% by weight, preferably from 5% to 10% by weight of dirhamnolipid of formula (VI), in which n and m are equal to 1, R1 represents a -(CH2)6CH3 group and R2 represents a nonenyl group, relative to the total weight of rhamnolipid.

[0111] As defined above, rhamnolipids are usually prepared starting from bacterial production strains such as Pseudomonas, by methods known to those skilled in the art.

[0112] Suitable fermentation methods are reviewed in D. Haferburg, R. Hommel, R. Claus and HP Kleber, Adv. Biochem. Ing. / Biotechnol. (1986), 33, pp. 53-90, and in F. Wagner, H. Bock and A. Kretschmar, Fermentation (ed. RM Lafferty) (1981), pp. 181-192, Springer Verlag, Vienna.

[0113] As rhamnolipids, use may be made of those sold under the name Rheance One by the company Evonik (INCI name: glycolipids).

[0114] The amount of the (b) glycolipid in the composition of the present invention may be 0.01% by mass or more, preferably 0.1% by mass or more, and more preferably 1% by mass or more, relative to the total mass of the composition.

[0115] The amount of (b) glycolipid in the composition of the present invention may be 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, relative to the total mass of the composition.

[0116] The amount of the (b) glycolipid in the composition of the present invention may be 0.01% by mass to 15% by mass, preferably 0.1% by mass to 10% by mass, and more preferably 1% by mass to 5% by mass, relative to the total mass of the composition.

[0117] (water) The composition of the present invention may also contain (c) water.

[0118] The amount of (c) water in the composition of the present invention may be 50% by mass or more, preferably 60% by mass or more, and more preferably 70% by mass or more, based on the total mass of the composition.

[0119] The amount of (c) water in the composition of the present invention may be 99% by mass or less, preferably 97% by mass or less, and more preferably 95% by mass or less, based on the total mass of the composition.

[0120] The amount of (c) water in the composition of the present invention may be 50% by mass to 99% by mass, preferably 60% by mass to 97% by mass, and more preferably 70% by mass to 95% by mass, based on the total mass of the composition.

[0121] (Amphoteric surfactant) The composition of the present invention may contain (d) at least one amphoteric surfactant. A single type of amphoteric surfactant may be used, but two or more different types of amphoteric surfactants may also be used in combination.

[0122] Amphoteric or zwitterionic surfactants may be, for example (non-limiting examples) amine derivatives, such as aliphatic secondary or tertiary amines, and optionally quaternized amine derivatives, in which the aliphatic group is a straight or branched chain containing from 8 to 22 carbon atoms and at least one water-solubilizing anionic group (e.g., carboxylate, sulfonate, sulfate, phosphate or phosphonate).

[0123] (d) The amphoteric surfactant may preferably be selected from the group consisting of betaine and amidoamine carboxylated derivatives.

[0124] (d) The amphoteric surfactant is preferably selected from betaine type surfactants.

[0125] The betaine type amphoteric surfactant is preferably an alkyl betaine, an alkyl amido alkyl betaine, a sulfo betaine, an alkyl sulfo betaine, a phospho betaine, an alkyl phospho betaine, and an alkyl amido alkyl sulfo betaine, specifically (C8 to C 24 ) Alkyl betaine, (C8-C 24 ) Alkylamide (C1-C8) alkyl betaine, sulfobetaine, (C1-C8) alkyl sulfobetaine, phosphobetaine, (C1-C8) alkyl phosphobetaine and (C8-C 24 In one embodiment, the betaine type amphoteric surfactant is selected from the group consisting of (C8-C) alkylamide (C1-C8) alkylsulfobetaines. 24 ) Alkyl betaine, (C8-C 24 ) alkylamido (C1-C8) alkylsulfobetaines, sulfobetaines, (C1-C8) alkylsulfobetaines and phosphobetaines.

[0126] Non-limiting examples that may be mentioned include the compounds classified in the CTFA International Cosmetic Ingredient Dictionary & Handbook, 15th Edition, 2014, under the names coco betaine, lauryl betaine, cetyl betaine, coco / oleamidopropyl betaine, cocamidopropyl betaine, palmitamidopropyl betaine, stearamidopropyl betaine, cocamidoethyl betaine, cocamidopropyl hydroxysultaine, oleamidopropyl hydroxysultaine, coco hydroxysultaine, lauryl hydroxysultaine and coco sultaine, alone or in mixtures.

[0127] The betaine type amphoteric surfactants (betaines) are preferably alkyl betaines, alkyl sulfo betaines and alkyl amido alkyl betaines, in particular coco betaine, sulfopropyl betaine and cocamidopropyl betaine.

[0128] Among the amidoamine carboxylated derivatives, mention may be made of the products sold under the name Miranol, described in U.S. Pat. Nos. 2,528,378 and 2,781,354 and classified in the CTFA Dictionary, Third Edition, 1982, the disclosure of which is incorporated herein by reference, under the names amphocarboxyglycinates and amphocarboxypropionates, respectively, having the following structures: R1-CONHCH2CH2-N + (R2)(R3)(CH2COO - )M + X - (B1) [In the formula, R1 represents the alkyl, heptyl, nonyl or undecyl group of the acid R1-COOH present in the hydrolyzed coconut oil; R2 represents a beta-hydroxyethyl group; R3 represents a carboxymethyl group; M +represents a cationic ion derived from an alkali metal such as sodium, an ammonium ion, or an ion derived from an organic amine, X - denotes an organic or inorganic anion, such as a halide, acetate, phosphate, nitrate, alkyl(C1-C4)sulfate, alkyl(C1-C4)- or alkyl(C1-C4)aryl-sulfonate, in particular methylsulfate and ethylsulfate, or M + and X - does not exist]; R1'-CONHCH2CH2-N(B)(C) (B2) [In the formula, R1' is the alkyl group of the acid R1'-COOH present in coconut oil or hydrolyzed linseed oil, an alkyl group such as C7, C9, C 11 Or C 13 Alkyl group, C 17 Alkyl groups and their isoforms, or unsaturated C 17 represents a group, B represents -CH2CH2OX'; C is -(CH2) z -Y' (wherein z=1 or 2), X' represents a -CH2-COOH group, -CH2-COOZ', -CH2CH2-COOH, -CH2CH2-COOZ', or a hydrogen atom; Y' represents -COOH, -COOZ', -CH2-CHOH-SO3Z', -CH2-CHOH-SO3H or CH2-CH(OH)-SO3-Z' group; In these formulas, Z' represents an ion of an alkali metal or alkaline earth metal, such as sodium, an ion derived from an organic amine, or an ammonium ion; and R a'' -NH-CH(Y'')-(CH2) n -C(O)-NH-(CH2) n' -N(Rd)(Re) (B'2) [In the formula, Y″ represents —C(O)OH, —C(O)OZ″, —CH2—CH(OH)—SO3H, or —CH2—CH(OH)—SO3-Z″ (wherein Z″ represents a cationic ion derived from an alkali metal such as sodium or an alkaline earth metal, an ion derived from an organic amine, or an ammonium ion); Rd and Re each represent a C1-C4 alkyl group or a C1-C4 hydroxyalkyl group; R a'' is C from the acid 10 ~C 30 represents an alkyl group or an alkenyl group represented by the formula: n and n' are independently an integer of 1 to 3.

[0129] The (d) amphoteric surfactant having the formula B1 and B2 is (C8-C 24 )-Alkyl amphomonoacetate, (C8-C 24 ) Alkyl amphodiacetate, (C8-C 24 ) alkyl amphoteric acid monopropionates, and (C8-C 24 ) alkyl amphodipropionates.

[0130] 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, lauroamphodipropionic acid and cocoamphodipropionic acid.

[0131] Mention may be made, by way of example, of cocoamphodiacetate sold under the name Miranol® C2M concentrate by the company Rhodia Chimie.

[0132] Among the compounds of formula (B'2), mention may be made of sodium diethylaminopropyl cocoaspartamide (CTFA), sold under the name CHIMEXANE HB by the company CHIMEX.

[0133] (d) The amphoteric surfactant is preferably selected from betaine type surfactants, more preferably from alkyl betaines, alkyl amido alkyl betaines, and mixtures thereof, even more preferably from coco betaine, cocamidopropyl betaine, and mixtures thereof.

[0134] The amount of the (d) amphoteric surfactant in the composition of the present invention may be 0.01% by mass or more, preferably 0.1% by mass or more, and more preferably 1% by mass or more, based on the total mass of the composition.

[0135] The amount of (d) amphoteric surfactant in the composition of the present invention may be 20% by weight or less, preferably 15% by weight or less, and more preferably 10% by weight or less, based on the total weight of the composition.

[0136] The amount of the amphoteric surfactant (d) in the composition of the present invention may be 0.01% by mass to 20% by mass, preferably 0.1% by mass to 15% by mass, and more preferably 1% by mass to 10% by mass, relative to the total mass of the composition.

[0137] (Amino acid surfactant) The composition of the present invention may comprise (e) at least one amino acid surfactant. A single type of amino acid surfactant may be used, but two or more different types of amino acid surfactants may also be used in combination.

[0138] (e) Amino acid surfactants are different from (d) amphoteric surfactants.

[0139] (e) Amino acid surfactants are anionic surfactants based on amino acids or their derivatives. Typically, (e) amino acid surfactants are anionic surfactants that contain at least one amino moiety and at least one carboxylic acid moiety in the form of a carboxylate. Amino acid surfactants may have two or more amino moieties and / or two or more carboxylic acid moieties in the form of a carboxylate.

[0140] (e) The amino acid surfactant may preferably be selected from amino acid derivatives, more preferably from salts of amino acids and N-acylated amino acids, such as 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.

[0141] The acyl group that forms the N-acyl portion of the amino acid derivative is C4-C 26 Acyl group, preferably C6-C 24 Acyl group, preferably C8-C 22 It may be an acyl group.

[0142] (e) The amino acid surfactant can be represented by the following chemical formula (VIII):

[0143] [ka]

[0144] [In the formula, Z represents a saturated or unsaturated, linear or branched hydrocarbon group having 8 to 22 carbon atoms; X is a hydrogen atom or a methyl group; n is 0 or 1, Y is selected from a hydrogen atom, -CH, -CH(CH), -CHCH(CH), -CH(CH)CHCH, -CHCHH, -CHCHOH, -CHOH, -CH(OH)CH, -(CH)NH, -(CH)NHC(NH)NH, -CHC(O)OM, -(CH)C(O)OH, and -(CH)C(O)OM;

[0145] M is a salt-forming cation with COO as the counter anion, such as sodium, potassium, and ammonium.

[0146] According to a preferred embodiment of the present invention, in the above formula (VIII), Z is a saturated or unsaturated linear C8-C 18 represents an alkyl group, in particular a cocoyl group, X is a hydrogen atom, n is 0, Y is a hydrogen atom or a -(CH2)2C(O)OM group, M is a salt-forming cation with COO as the counter anion, such as sodium, potassium, and ammonium.

[0147] (e) Amino acid surfactants may be derived from the carboxylate salts of amino acids, where the amine group located on the α- or β-carbon of the amino acid salt is acylated with a fatty acid derivative.

[0148] The carboxylates of these amino acids can be formed by conventional means such as neutralizing the respective amino acids with a base. The amine group located on the α- or β-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 form an amide, thus forming the desired surfactant reaction product, i.e., (e) amino acid surfactant.

[0149] Suitable acyl halides for acylation of amino acid carboxylate include acyl chloride, acyl bromide, acyl fluoride and acyl iodide.Acyl halides can be prepared by reacting saturated or unsaturated, linear or branched fatty acid with thionyl halide (bromide, chloride, fluoride and iodide).Representative acyl halides include, but are not limited to, acyl chloride selected from decanoyl chloride, dodecanoyl chloride (lauroyl chloride), cocoyl chloride (fatty acid chloride 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 bromides, fluorides, and iodides of the aforementioned fatty acids. Methods for preparing acyl halides and alternative methods for acylation of amino acids are described in U.S. Patent Application Publication No. 2008 / 0200704, published Aug. 21, 2008, which is incorporated herein by reference.

[0150] (e) The amino acid surfactant may even more preferably be selected from the group consisting of glutamate, N-acylated glutamate, aspartate, N-acylated aspartate, and salts thereof.

[0151] (e) Examples of amino acid surfactants include, but are not limited to, the following: - sarcosinates, such as N-acylsarcosines (salts), for example sodium lauroyl sarcosine sold under the name Nikkol Sarcosinate® LN by Nikko Chemicals Co., Ltd. or under the name Pureact® LSR by Innospec Performance Chemicals Europe Limited; sodium myristoyl sarcosine sold under the name Nikkol Sarcosinate® MN by Nikko Chemicals Co., Ltd.; and sodium palmitoyl sarcosine sold under the name Nikkol Sarcosinate® PN by Nikko Chemicals Co., Ltd. alaninates, such as N-acylalanines (salts), for example sodium N-lauroyl-N-methylamidopropionate sold under the name Sodium Nikkol Alaninate® LN 30 by Nikko Chemicals Co., Ltd. or under the name Alanone® ALE by Kawaken Fine Chemicals Co., Ltd.; sodium cocoyl alanine sold under the name Amilite® ACS-12 by Ajinomoto Co., Inc.; and N-lauroyl-N-methylalanine triethanolamine sold under the name Alanone® ALTA by Kawaken Fine Chemicals Co., Ltd. - glutamates, such as N-acyl glutamic acid (salts), for example sodium stearoyl glutamate sold under the name Eumulgin® SR by BASF Japan Ltd.; sodium lauroyl glutamate sold under the name Plantapon® Amino SLG-P by BASF Japan Ltd.; triethanolamine monococoyl glutamate sold under the name Amisoft® CT-12 by Ajinomoto Co., Inc.; triethanolamine lauroyl glutamate sold under the name Amisoft® LT-12 by Ajinomoto Co., Inc.; disodium stearoyl glutamate sold under the name Amisoft® HS-21P by Ajinomoto Co., Inc.; sodium cocoyl glutamate sold under the name Plantapon® Amino SF-N by BASF Japan Ltd.; Disodium Cocoyl Glutamate sold under the name SCG-L; and Disodium Cocoyl Glutamate / Sodium sold under the name Amisoft® CS-22 by Ajinomoto Co., Inc. aspartates, such as N-acylaspartic acids (salts), for example disodium N-lauroyl aspartate sold under the name AminoFoamer® FLMS-P1 by Asahi Kasei Corporation; and the mixture of triethanolamine N-lauroyl aspartate and triethanolamine N-myristoyl aspartate sold under the name AminoFoamer® FCMT-L by Asahi Kasei Corporation, - glycinates, such as N-acylglycinic acids (salts), for example sodium N-cocoyl glycinate sold under the name Amilite® GCS-12K by Ajinomoto Co.; and potassium N-cocoyl glycinate sold under the name Amilite® GCK-12K.

[0152] (e) The amino acid surfactant is preferably selected from glutamates, preferably N-acyl glutamates, more preferably sodium cocoyl glutamate, disodium cocoyl glutamate, and mixtures thereof.

[0153] The amount of (e) the amino acid surfactant in the composition of the present invention may be 0.01% by mass or more, preferably 0.1% by mass or more, and more preferably 1% by mass or more, relative to the total mass of the composition.

[0154] The amount of (e) amino acid surfactant in the composition of the present invention may be 20% by weight or less, preferably 15% by weight or less, and more preferably 10% by weight or less, based on the total weight of the composition.

[0155] The amount of the (e) amino acid surfactant in the composition of the present invention may be 0.01% by mass to 20% by mass, preferably 0.1% by mass to 15% by mass, and more preferably 1% by mass to 10% by mass, relative to the total mass of the composition.

[0156] (Monovalent non-polymeric acid or its salt) The composition of the present invention may contain (f) at least one monovalent non-polymeric acid or salt thereof. A single type of monovalent non-polymeric acid or salt thereof may be used, but two or more different types of monovalent non-polymeric acids or salts thereof may also be used in combination.

[0157] (f) The monovalent non-polymeric acid or salt thereof is different from (e) the amino acid surfactant.

[0158] The term "non-polymeric" as used herein means that the acid is not obtained by polymerizing two or more monomers, and thus does not correspond to acids obtained by polymerizing two or more monomers, such as polyacrylic acid.

[0159] The term "salt" as used herein refers to a salt formed by adding a suitable base to a monovalent non-polymeric acid, which can be obtained from the reaction of a monovalent non-polymeric acid with a base according to methods known to those skilled in the art. The salt can include metal salts, such as salts with alkali metals such as Na and K, and salts with alkaline earth metals such as Mg and Ca, and ammonium salts.

[0160] (f) The molecular weight of the monovalent non-polymeric acid or salt thereof is preferably less than 1,000, preferably 500 or less, and more preferably 200 or less.

[0161] The (f) monovalent non-polymeric acid or salt thereof can be included in the aqueous phase formed by the (c) water, if present. The (f) monovalent non-polymeric acid or salt thereof can facilitate dissolution of the (a) cationic polymer in the (c) water, if present.

[0162] (f) The monovalent non-polymeric acids have a single acid group which may be selected from the group consisting of a carboxylate group, a sulfate group, a sulfonate group, a phosphorate group, a phosphonate group, and mixtures thereof.

[0163] (f) The monovalent non-polymeric acid or salt thereof may be selected from monovalent organic or inorganic acids and their salts.

[0164] (f) The monovalent non-polymeric acid is preferably a monovalent organic acid, and more preferably a monovalent non-polymeric carboxylic acid.

[0165] The monovalent non-polymeric carboxylic acid may be selected from hydroxy acids, preferably alpha-hydroxy acids and beta-hydroxy acids. The alpha-hydroxy acids may include, for example, lactic acid and glycolic acid. The beta-hydroxy acids may include, for example, salicylic acid.

[0166] The monovalent non-polymeric acid may be a monovalent non-polymeric organic acid, preferably a monovalent non-polymeric carboxylic acid, more preferably a monovalent hydroxy acid, such as lactic acid and salicylic acid.

[0167] The amount of (f) monovalent non-polymeric acid or salt thereof in the composition of 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, based on the total weight of the composition.

[0168] The amount of (f) monovalent non-polymeric acid or salt thereof in the composition of the present invention may be 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, based on the total weight of the composition.

[0169] The amount of (f) monovalent non-polymeric acid or its salt in the composition of the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, and more preferably 0.1% by mass to 5% by mass, relative to the total mass of the composition.

[0170] (Optional Ingredients) In addition to the above-mentioned components, the composition of the present invention may contain optional components typically used in cosmetics, specifically, surfactants / emulsifiers other than (b) glycolipids, (d) amphoteric surfactants, and (e) amino acid surfactants, such as taurates (e.g., sodium cocoyl taurate, sodium methyl taurate, and sodium lauroyl taurate); for example, hydrophilic or lipophilic thickeners derived 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; nonionic polymers such as β-glucan; silicones and silicone derivatives; natural extracts derived from animals or plants other than (a) cationic polymers; waxes; preservatives such as caprylyl glycol and phenoxyethanol; antioxidants such as tocopherol; and salts such as NaCl, within a range that does not impair the effects of the present invention.

[0171] The composition of the present invention may contain the above optional components in an amount of 0.01% by mass to 30% by mass, preferably 0.05% by mass to 20% by mass, and more preferably 0.1% by mass to 10% by mass, relative to the total mass of the composition.

[0172] The composition of the present invention may comprise at least one oil. In this specification, "oil" means a fatty compound or substance that is in the form of a liquid or paste (non-solid) at atmospheric pressure (760 mmHg) and room temperature (25°C). As oils, those commonly used in cosmetics can be used, alone or in combination. These oils may be volatile or non-volatile.

[0173] However, the amount of oil in the composition of the present invention can be limited.Therefore, the amount of oil in the composition of the present invention can be less than 5% by weight based on the total weight of the composition.It may be particularly preferred that the composition of the present invention does not contain oil.

[0174] The amount of synthetic thickener in the composition of the invention may be less than 3% by weight relative to the total weight of the composition. It may be particularly preferred that the composition of the invention is free of synthetic thickeners.

[0175] The amount of anionic or amphoteric polymer in the composition of the invention may be less than 1% by weight, preferably less than 0.1% by weight, more preferably less than 0.01% by weight, relative to the total weight of the composition. It is particularly preferred that the composition of the invention does not comprise anionic or amphoteric polymers.

[0176] [pH] The pH of the composition of the present invention may be 4-8, preferably 4.5-7.5, and more preferably 5-7.

[0177] The pH of the composition of the present invention can be adjusted by adding at least one alkaline agent and / or at least one acid other than (f) a monovalent non-polymeric acid or its salt, or (f) a monovalent non-polymeric acid or its salt. The pH of the composition of the present invention can also be adjusted by adding at least one buffering agent.

[0178] [Preparation] The composition of the present invention can be prepared by mixing the essential components described above, and, where necessary, the optional components described above.

[0179] The method and means for mixing the above essential components and optional components are not limited. Any conventional method and means can be used to mix the above essential components and optional components to prepare the composition of the present invention.

[0180] The composition of the present invention can be prepared by simple or easy mixing with conventional mixing means such as stirrers and homogenizers. Also, heating may not be required. Therefore, the preparation method of the composition of the present invention can be environmentally friendly.

[0181] [form] The compositions of the present invention may be in any form.

[0182] For example, the compositions of the present invention may be in the form of a solution or a gel.

[0183] In another embodiment, the compositions of the present invention may be in the form of a solution. In this embodiment, the compositions of the present invention may be packaged with an automatic foam pump that allows the consumer to apply the composition in a foam.

[0184] The compositions of the present invention, prior to dilution, may have a clear or translucent appearance, preferably a clear appearance.

[0185] Clarity may be measured by measuring turbidity (e.g., with a HACH 2100Q Portable Turbidimeter). The turbidity of the compositions of the present invention may be less than 400 NTU (semi-transparent), preferably less than 350 NTU, more preferably less than 300 NTU (transparent).

[0186] [Beauty use] The composition of the present invention may be intended to be used as a cosmetic composition. Therefore, the cosmetic composition of the present invention may be intended to be applied to keratinous materials. In this specification, keratinous materials refer to materials that contain keratin as a main component, and examples thereof include skin, scalp, nails, lips, hair, etc. Therefore, it is preferable that the cosmetic composition of the present invention is used in a cosmetic method for keratinous materials, particularly skin.

[0187] The cosmetic composition of the present invention may be a dermocosmetic composition, preferably a skin care composition, more preferably a face care composition.

[0188] In particular, the composition of the present invention is useful for cleansing. Therefore, the composition of the present invention is preferably a cleansing composition, more preferably a cleansing composition for the skin, and even more preferably a cleansing composition for the face.

[0189] [Cosmetic methods and uses] The present invention also provides - a cosmetic method for keratinous materials such as the skin, comprising the steps of applying a composition according to the invention to the keratinous materials and, optionally, removing the composition from the keratinous materials, or - the use of the composition according to the invention for caring for or cleansing keratinous materials such as the skin; Also relates to.

[0190] By cosmetic method is meant herein non-therapeutic cosmetic methods, such as cosmetic methods for caring for or cleansing the surface of keratinous materials, such as the skin.

[0191] The removing step in the cosmetic method of the present invention can be carried out, for example, by washing the composition of the present invention off from keratinous materials such as skin with water.

[0192] If no removal step is performed, the cosmetic method of the present invention may be useful for the care of keratinous materials such as skin, since (b) the glycolipids may impart anti-inflammatory, anti-allergic or antibacterial properties to the keratinous materials, which may be particularly useful for the care of acne-prone and sensitive skin.

[0193] When a removal step is performed, the cosmetic method of the present invention may be useful for cleansing keratinous materials such as skin, because (b) the glycolipid can function as a surfactant.

[0194] When the compositions of the present invention are diluted with water, the compositions of the present invention may undergo precipitation.

[0195] When a keratinous material, such as the skin, is moistened with water before or after application of the composition of the present invention to the keratinous material, the composition of the present invention may cause a precipitate on the keratinous material.

[0196] On the other hand, if the keratinous material such as skin is wetted with water before the step of removing the composition of the present invention from the keratinous material, the composition of the present invention may also form a precipitate on the keratinous material.

[0197] Therefore, it is preferred to wet a keratinous material, such as the skin, with water before or after the step of applying the composition of the present invention to the keratinous material, or before removing the composition of the present invention from the keratinous material.

[0198] The precipitate contains (b) glycolipids and can therefore impart various benefits to keratinous materials such as skin, such as anti-inflammatory, anti-allergic, or anti-bacterial properties that may be particularly useful for acne-prone and sensitive skin.

[0199] Furthermore, the precipitate contains (b) glycolipids that can function as surfactants, and therefore the precipitate can be effectively used for washing keratinous materials such as skin by further washing the precipitate off the keratinous materials with water, which is believed to be favorable for cleansing keratinous materials, particularly for removing makeup from keratinous materials such as skin.

[0200] The present invention also relates to the use of at least one cationic polymer selected from (a) chitosan having a molecular weight of less than 20,000, preferably less than 15,000, more preferably less than 10,000, in a composition comprising (b) at least one glycolipid, The present invention may also relate to a use for producing a precipitate comprising (b) a glycolipid when the composition is diluted with water.

[0201] The above descriptions regarding (a) cationic polymer, (b) glycolipid, and (c) water for the composition of the present invention are applicable to the above uses. EXAMPLES

[0202] The present invention will now be described in a more detailed manner by means of examples, which should not, however, be construed as limiting the scope of the present invention.

[0203] (Examples 1 to 7 and Comparative Examples 1 to 5) [Preparation] Each of the compositions of Examples 1 to 7 and Comparative Examples 1 to 5 was prepared by mixing the components shown in Table 2. All numerical values ​​for the amounts of components in Table 2 are based on "mass %" of the active ingredient.

[0204] [Table 2]

[0205] [evaluation] (Dilution test) Each of the compositions of Examples 1 to 7 and Comparative Examples 1 to 5 was diluted with water to 5 times its volume at room temperature (25° C.).

[0206] The dilution test simulates the use of the compositions of the present invention under moist conditions, such as in a bathroom.

[0207] Sedimentation in each composition was visually evaluated according to the following criteria: Very good: A lot of precipitation was observed after dilution. Good: Precipitation observed after dilution Poor: No precipitation observed after dilution Very poor: Precipitation was observed before dilution

[0208] The results are shown in Table 2.

[0209] The more precipitation occurs, the better the composition of the present invention can provide the effect of precipitation.

[0210] (Summary) Examples 1-6 show that the compositions of Examples 1-6 containing low molecular weight chitosan and glycolipids were able to produce a precipitate when diluted with water.

[0211] Example 7 shows that the composition of Example 7 could produce a lot of precipitate when diluted with water because a relatively large amount of low molecular weight chitosan was used.

[0212] Comparative Examples 1 to 3 show that the compositions of Comparative Examples 1 to 3, which do not contain glycolipids, but contain low molecular weight chitosan, were unable to produce any precipitate.

[0213] Comparative Examples 4 and 5 show that the compositions of Comparative Examples 4 and 5, which contain chitosan having a molecular weight of 20,000 or more, precipitated before dilution with water. Precipitation before dilution with water is undesirable, for example, due to non-uniformity or inhomogeneity of the composition during storage.

Claims

1. (a) at least one cationic polymer selected from chitosan, and (b) at least one glycolipid A composition comprising, preferably a cosmetic composition, more preferably a skin cosmetic composition, A composition wherein the cationic polymer (a) has a molecular weight of less than 20,000, preferably less than 15,000, and more preferably less than 10,000.

2. The composition according to claim 1, wherein the amount of the cationic polymer (a) in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

3. The composition according to claim 1, wherein the glycolipid (b) is selected from rhamnolipids.

4. The composition according to claim 1, wherein the amount of the glycolipid (b) in the composition is 0.01% to 15% by mass, preferably 0.1% to 10% by mass, and more preferably 1% to 5% by mass, based on the total mass of the composition.

5. (c) The composition according to claim 1, further comprising water.

6. (d) The composition according to claim 1, further comprising at least one amphoteric surfactant.

7. The composition according to claim 6, wherein the amount of the (d) amphoteric surfactant in the composition is 0.01% to 20% by mass, preferably 0.1% to 15% by mass, and more preferably 1% to 10% by mass, based on the total mass of the composition.

8. (e) The composition according to claim 1, further comprising at least one amino acid surfactant.

9. The composition according to claim 8, wherein the amount of the (e) amino acid surfactant in the composition is 0.01% to 20% by mass, preferably 0.1% to 15% by mass, and more preferably 1% to 10% by mass, based on the total mass of the composition.

10. (f) The composition according to claim 1, further comprising at least one monovalent nonpolymeric acid or a salt thereof, preferably a monovalent nonpolymeric carboxylic acid, more preferably a monovalent hydroxy acid, such as lactic acid and salicylic acid.

11. The composition according to claim 10, wherein the amount of (f) monovalent nonpolymeric acid or salt thereof in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

12. The composition according to claim 1, wherein the pH of the composition is 4 to 8, preferably 4.5 to 7.5, and more preferably 5 to 7.

13. The composition described in Invoice 1, which is a cleansing composition, preferably a cleansing composition for skin, and more preferably a cleansing composition for the face.

14. A cosmetic method for keratinous substances in the skin, etc. A step of applying the composition according to any one of claims 1 to 13 to the keratin substance, A step of optionally removing the composition from the keratin substance. Beauty methods, including

15. (b) Use of at least one cationic polymer selected from (a) chitosan 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 at least one glycolipid, Use to produce a precipitate containing the glycolipid (b) when the composition is diluted with water.