Composition comprising glycolipid and cationic polymer

Abstract

The present invention relates to a composition comprising: (a) at least one glycolipid; (b) at least one cationic polymer selected from polylysines; and (cl) at least one polyol, (c2) at least one liquid fatty alcohol, or mixtures thereof, wherein the amount of the (cl) polyol(s) in the composition is 1% by weight or more, preferably 2.5% by weight or more, and more preferably 5% by weight or more, relative to the total weight of the composition. The composition according to the present invention can have a relatively higher viscosity and could provide a keratin material such as skin with a deposition including glycolipids.

Description

[0001] DESCRIPTION

[0002] TITLE OF INVENTION

[0003] COMPOSITION COMPRISING GLYCOLIPID AND CATIONIC POLYMER

[0004] TECHNICAL FIELD

[0005] The present invention relates to a composition including, at least, glycolipid and cationic polymer, as well as a cosmetic process using the composition.

[0006] BACKGROUND ART

[0007] Cleansing of the skin is very important for facial care. It must be as effective as possible since fatty residues, such as excess sebum, the residues of cosmetic products used daily and makeup products accumulate in the skin folds and can block the skin pores and lead to the appearance of spots.

[0008] The formulation of environmentally-friendly cosmetic products, which are designed and developed considering environmental issues, is becoming a major goal in an effort to meet global challenges. It is therefore essential to propose more sustainable compositions, preparation processes and ingredients to address these environmental concerns.

[0009] In this context, it is important to develop new cosmetic compositions such as new cleansing composition with a better carbon footprint, particularly by promoting the use of renewable raw materials and / or materials with a good index of naturalness and / or materials of natural origin.

[0010] Biosurfactants such as glycolipids, in particular rhamnolipids, are materials of natural origin and are known to have unique bioactivities, such as anti-inflammation efficacy, anti-allergic efficacy, antibacterial efficacy, and the like.

[0011] DISCLOSURE OF INVENTION

[0012] There is a need for a composition which can provide a keratin material such as skin with a deposition including glycolipid.

[0013] However, it is difficult for glycolipid to remain on the keratin material when using a certain type of a composition, such as a cleansing composition, including glycolipid, if the composition is rinsed off with water.

[0014] In addition, if the composition has a low viscosity, the composition can drip off from hands, when being used, which is not useful. Therefore, the application of the composition on the keratin material such as the skin may not be practical for the consumer.

[0015] Thus, an objective of the present invention is to provide a composition which can be easily applied on a keratin material such as the skin, while providing a good deposition of glycolipid on the keratin material such as the skin, even when the composition is rinsed off with water.

[0016] The above objective can be achieved by a composition, preferably a cosmetic composition, and more preferably a cleansing cosmetic composition, comprising:

[0017] (a) at least one glycolipid;

[0018] (b) at least one cationic polymer selected from polylysines; and

[0019] (c) (c1) at least one polyol, (c2) at least one liquid fatty alcohol, or (c3) mixtures thereof, wherein the amount of the (c1) polyol(s) in the composition is 1% by weight or more, preferably 2% by weight or more, and more preferably 2.5% by weight or more, relative to the total weight of the composition.

[0020] The (a) glycolipid may be selected from rhamnolipids, sophorolipids, and mixtures thereof, and preferably from rhamnolipids.

[0021] The amount of the (a) 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.

[0022] The (b) cationic polymer may have a molecular weight of more than 1,000, preferably more than 1,500, and more preferably more than 2,000.

[0023] The amount of the (b) 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.

[0024] The (c1) polyol may have 5 or more, preferably 6 or more, hydroxyl groups.

[0025] It is more preferable that the (c1) polyol be selected from sugar alcohols, even more preferably the group consisting of sorbitol, mannitol and a mixture thereof.

[0026] The amount of the (c1) polyol(s) in the composition according to the present invention may be from 1% to 20% by weight, preferably from 2% to 15% by weight, and more preferably 2.5% to 10% by weight or more, relative to the total weight of the composition.

[0027] The (c2) liquid fatty alcohol may be selected from C12to C24linear or branched saturated fatty alcohols, C12to C24linear or branched unsaturated fatty alcohols, and mixtures thereof.

[0028] It is preferable that the (c2) liquid fatty alcohol be selected from the group consisting of lauryl alcohol, hexyldecanol, oleyl alcohol, isostearyl alcohol, octyldodecanol, decyltetradecanol, and a mixture thereof, preferably isostearyl alcohol, oleyl alcohol and a mixture thereof.

[0029] The amount of the (c2) liquid fatty alcohol(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 0.1% to 1% by weight or more, relative to the total weight of the composition.

[0030] The composition according to the present invention may further comprise (d) at least one anionic surfactant, preferably selected from taurate surfactants.

[0031] The (d) 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. The composition according to the present invention may further comprise (e) at least one amphoteric surfactant.

[0032] The amount of the (e) amphoteric surfactant(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.

[0033] The present invention also relates to a cosmetic process for a keratin material such as skin, comprising: applying to the keratin material the composition according to the present invention; and optionally removing the composition from the keratin material.

[0034] BEST MODE FOR CARRYING OUT THE INVENTION

[0035] After diligent research, the inventors have discovered that it is possible to provide a composition which can be easily applied on a keratin material such as the skin, while providing a good deposition of glycolipid on the keratin material such as the skin, even when the composition is rinsed off with water.

[0036] Thus, the composition according to the present invention comprises:

[0037] (a) at least one glycolipid;

[0038] (b) at least one cationic polymer selected from polylysines; and

[0039] (c) (c1) at least one polyol, (c2) at least one liquid fatty alcohol, or (c3) mixtures thereof, wherein the amount of the (c1) polyol(s) in the composition is 1% by weight or more, preferably 2% by weight or more, and more preferably 2.5% by weight or more, relative to the total weight of the composition.

[0040] The composition according to the present invention can have a relatively higher viscosity and could provide a keratin material such as skin with a deposition including glycolipid.

[0041] The composition according to the present invention can have a relatively higher viscosity. Therefore, the composition according to the present invention is difficult to drip off from hands, when being used. Accordingly, the composition according to the present invention is easy to handle, and therefore, the composition can be applied easily on a keratin material such as the skin.

[0042] The (c1) polyol and / or the (c2) liquid fatty alcohol could function as a thickener in the composition according to the present invention.

[0043] In addition, due to the relatively high viscosity, the composition according to the present invention can be suitable to be discharged by a pump from a container.

[0044] Further, the composition according to the present invention could provide a good deposition of (a) glycolipid on a keratin material such as the skin. The deposition could be provided by, for example, precipitates including (a) glycolipid formed in the composition according to the present invention, when the composition is rinsed off from the keratin material with water.

[0045] A preferable embodiment of the composition according to the present invention could provide an increased amount of such depositions or precipitates to a keratin material such as skin.

[0046] Furthermore, the composition according to the present invention can be stable such that the appearance of the composition does not change at a variety temperatures, for example at cold temperatures such as -5°C and 4°C, for a long period of time. For example, if the composition according to the present invention is transparent, it can maintain its transparent aspect at a variety of temperatures for a long period of time.

[0047] As glycolipids such as rhamnolipids have bioactivities, such as anti-inflammation efficacy, anti-allergic efficacy, and antibacterial efficacy, the deposition including the (a) glycolipid provided by the composition according to the present invention would be useful to care for a keratin material such as skin. In particular, the composition according to the present invention would be useful to treat or care for skin with acne.

[0048] Since glycolipids can function as (anionic) surfactants, the deposition including the (a) glycolipid could also provide enhanced cleansing effects. Thus, the composition according to the present invention would also be useful for cleansing a keratin material such as skin.

[0049] The (a) glycolipid can be originated from natural and renewable materials, and are biodegradable. In addition, since polylysines can also be obtained from natural resources, the (b) cationic polymer is an environmentally-friendly ingredient. Therefore, the composition according to the present invention can include environmentally-friendly ingredients.

[0050] Hereinafter, the present invention will be explained in a more detailed manner.

[0051] [Composition]

[0052] The composition according to the present invention comprises:

[0053] (a) at least one glycolipid;

[0054] (b) at least one cationic polymer selected from polylysines; and

[0055] (c) (c1) at least one polyol, (c2) at least one liquid fatty alcohol, or (c3) mixtures thereof, wherein the amount of the (c1) polyol(s) in the composition is 1% by weight or more, preferably 2% by weight or more, and more preferably 2.5% by weight or more, relative to the total weight of the composition.

[0056] (Glycolipid)

[0057] The composition according to the present invention comprises (a) 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.

[0058] The term “glycolipid” is understood as meaning a compound formed from a lipid to which are attached one or more sugar compounds.

[0059] The (a) glycolipid may be selected from glucolipids, sophorolipids, trehalolipids, cellobiose lipids, rhamnolipids, and mixtures thereof.

[0060] The (a) glycolipid may preferably be selected from sophorolipids rhamnolipids, and mixtures thereof, and more preferably from rhamnolipids. Preferably, the composition according to the present invention comprises at least one glycolipid chosen from rhamnolipids, sophorolipids and mixtures thereof, and more preferentially comprises at least one rhamnolipid.

[0061] Glucolipids:

[0062] The (a) glycolipid may be selected from glucolipids, which comprise a glucose fraction and can be represented by the general formula (I): in which:

[0063] R1represents 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.

[0064] The glucolipids can be produced by the bacterium Alcaligen.es sp. MM1.

[0065] Appropriate fermentation methods 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. The glucolipids are recovered from the fermentation broth by solvent extraction using diethyl ether or a di chloromethane methanol or chloroformmethanol mixture.

[0066] Sophorolipids:

[0067] The (a) glycolipid may be selected from sophorolipids, which comprise a sophorose fraction and can be represented by the general formula (II): in which:

[0068] R3and R4individually represent a hydrogen atom or an acetyl group,

[0069] R5represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon group having from 1 to 9 carbon atoms, preferably methyl, R6represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon group having from 1 to 19 carbon atoms, with the proviso that the total number of carbon atoms in the groups R5and R6does not exceed 20 and is preferably from 14 to 18,

[0070] R7represents a hydrogen atom,

[0071] R8represents a hydroxyl group OH, or R7and R8together form a lactone ring.

[0072] Sophorolipids may be incorporated into the composition according to the present invention either in the form of an open-chain free acid, where R7represents a hydrogen atom and R8represents a hydroxy group OH, or in its lactone form, where a lactone ring is formed between R7and R8, as indicated by formula (III): in which:

[0073] R3, R4, R5and R6are as defined above, with the proviso that at least one of R3and R4represents an acetyl group.

[0074] The 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.

[0075] Appropriate 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 openchain sophorolipids and of sophorolipid lactones that may be used in the form of mixtures, or the required form may be isolated.

[0076] Examples of sophorolipids that may be used include the product sold under the name Sopholiances by Givaudan and the product sold under the name BioToLife by BASF.

[0077] Trehalolipids:

[0078] The (a) glycolipid may be selected from trehalolipids, which comprise a trehalose fragment and can be represented by the general formula (IV): in which:

[0079] R9, R10and R11individually represent a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon radical having from 5 to 13 carbon atoms.

[0080] The trehalolipids can be produced by bacterial fermentation using the marine bacterium Arthrobacter sp. Ek 1 or the freshwater bacterium Rhodococcus erythropolis . Appropriate fermentation methods are provided 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.

[0081] Cellobiose lipids:

[0082] The (a) glycolipid may be selected from cellobiose lipids, which comprise a cellobiose fragment and can be represented by the general formula (V): in which:

[0083] R1represents a hydrogen atom or a cation,

[0084] R12represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon radical having from 9 to 15 carbon atoms, preferably 13 carbon atoms,

[0085] R13represents a hydrogen atom or an acetyl group; and

[0086] R14represents a saturated or unsaturated, hydroxylated or non-hydroxylated hydrocarbon radical having from 4 to 16 carbon atoms.

[0087] The cellobiose lipids can be produced by cells of fungi of the genus Ustilago. Appropriate fermentation processes are provided by Frautz, Lang and Wagner (1986), Biotech. Letts., 8, 757-762.

[0088] Rhamnolipids:

[0089] The (a) glycolipid may be selected from rhamnolipids.

[0090] The composition according to the present invention preferably comprises one or more rhamnolipids.

[0091] Rhamnolipids are glycolipids produced by various bacterial species. They consist of one rhamnose fragment (mono-rhamnolipid) or of two rhamnose fragments (di-rhamnolipid) linked by a glycosidic bond to one, two or three chains of β-hydroxylated fatty acids linked to one another by an ester bond.

[0092] Preferably, rhamnolipids are chosen from mono-rhamnolipids and di-rhamnolipids correspond to the following formula (VI): in which: m denotes an integer equal to 2, 1 or 0, n denotes an integer equal to 1 or 0, and R1and R2, each independently represent identical or different hydrocarbon radicals having from 2 to 24 carbon atoms, preferably from 5 to 13 carbon atoms, that are branched or unbranched, substituted or unsubstituted, in particular hydroxy-substituted, and saturated or unsaturated, preferably a singly, doubly or triply unsaturated alkyl radical, and also the salts thereof, solvates thereof and optical isomers thereof.

[0093] Thus, when n is equal to 0, the formula (VI) protects mono-rhamnolipids and, when n is equal to 1, it protects di-rhamnolipids.

[0094] The composition according to the present invention preferably comprises at least one di- rhamnolipid.

[0095] 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 R1and R2, each independently represent identical or different hydrocarbon radicals having from 2 to 24 carbon atoms, preferably from 5 to 13 carbon atoms, that are branched or unbranched, substituted or unsubstituted, in particular hydroxy-substituted, and saturated or unsaturated, preferably a singly, doubly or triply unsaturated alkyl radical, and also the salts thereof, solvates thereof and optical isomers thereof.

[0096] The glycosidic bond between the two rhamnose fragments may be in the alpha or beta configuration and is preferably in the alpha configuration.

[0097] In the context of the present invention, the salts of the di-rhamnolipids of formula (VI) are more particularly the carboxylate salts thereof with an organic or inorganic cation and especially with a cation selected from sodium, potassium, calcium and ammonium. the solvated forms of the di-rhamnolipids of formula (VI) are more particularly those solvated with one or more molecules of water or of 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 preferably being in the form of the R enantiomers, and the term “alkyl” radical denotes a saturated, linear or branched aliphatic group; for example, a C1-C20alkyl 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.

[0098] 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 R1and R2, which are identical or different, are selected from pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl radicals and radicals of formula -(CH2)oCH3, with 0 denoting an integer ranging from 1 to 23, in particular from 3 to 15 and more particularly from 4 to 12.

[0099] According to one embodiment of the present 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.

[0100] 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.

[0101] According to another embodiment of the present invention, the composition according to the present invention comprises a mixture comprising at least one mono-rhamnolipid.

[0102] More preferably, the composition according to the present invention comprises at least one di- rhamnolipid of the following formula (VII): in which: m denotes an integer equal to 2, 1 or 0; preferably, m is equal to 1 n denotes an integer equal to 1, R1is a -(CH2)p-CH3radical, with p being an integer varying from 1 to 23, preferably from 4 to 12, R2is a -(CH2)q-CH3radical, with q being an integer varying from 1 to 23, preferably from 4 to 12, and also the salts thereof, solvates thereof and optical isomers thereof.

[0103] By way of illustration and without limiting the di-rhamnolipids of formula (VII) that may be suitable for the present invention, mention may be made in particular of the compounds of formula di-RL-CXCY, such as are defined in Table 1 below.

[0104] The formula di-RL-CXCY is an alternative way of writing in order to represent a dirhamnolipid (di-RL) functionalized by two radicals R1and R2respectively represented by the symbols CX and CY, the integers X and Y being respectively equal to p+4 and q+4.

[0105] Table 1

[0106] 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 referred to as di-RL-C10C10, or one of the salts, solvates and optical isomers thereof.

[0107] 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 of from 51% to 85% by weight, relative to the total weight of rhamnolipids.

[0108] According to a preferred 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, or a salt, solvate or optical isomer thereof.

[0109] According to a preferred 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 , R1represents a -(CH2)oCH3radical, with o being an integer varying from 4 to 12, and R2is selected from the pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl radicals; preferably, R1represents a -(CH2)6CH3radical and R2a nonenyl radical, or a salt, solvate or optical isomer thereof.

[0110] According to a 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) as defined previously, and more particularly selected 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 , R1represents a -(CH2)oCH3radical, with 0 being an integer varying from 4 to 12, and R2is selected from the pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl radicals; preferably, R1represents a -(CH2)6CH3radical and R2a nonenyl radical.

[0111] 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) selected from: at least 50% by weight and preferably of from 51 % to 85% by weight of a 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, 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 , R1represents a -(CH2)6CH3radical and R2represents a nonenyl radical, relative to the total weight of rhamnolipids.

[0112] The rhamnolipids are customarily prepared by processes known to those skilled in the art starting from bacterial producers, such as Pseudomonas.

[0113] Appropriate fermentation methods 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. R.M. Lafferty) (1981), 181-192, Springer Verlag, Vienna.

[0114] Use may be made, as rhamnolipid, of the product sold under the name Rheance One by Evonik (INCI name: glycolipids).

[0115] The amount of the (a) 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.

[0116] The amount of the (a) 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.

[0117] The amount of the (a) 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.

[0118] In the context of the present specification, any combinations of the upper limit values and the lower limit values above can be available to represent the preferred range of the amount.

[0119] (Cationic Polymer)

[0120] The composition according to the present invention comprises (b) at least one cationic polymer selected from polylysines. A single type of such a cationic polymer may be used, or two or more different types of such cationic polymers may be used in combination.

[0121] A cationic polymer can have a positive charge density. The charge density of the (a) cationic polymer may be from 0.01 meq / g to 20 meq / g, preferably from 0.05 to 15 meq / g, and more preferably from 0.1 to 10 meq / g.

[0122] The molecular weight (Da) of the (b) cationic polymer may be less than 20,000, preferably less than 15,000, and more preferably less than 10,000. In other words, the (b) cationic polymer may be a low molecular weight polylysine.

[0123] The molecular weight (Da) of the (b) cationic polymer may be more than 1,000, preferably more than 1,500, and more preferably more than 2,000.

[0124] Thus, the molecular weight (Da) of the (b) cationic polymer may be more than 1,000 and less than 20,000, preferably more than 1,500 and less than 15,000, and more preferably more than 2,000 and less than 10,000.

[0125] Unless otherwise defined in the descriptions, “molecular weight” means a weight average molecular weight. The molecular weight can be measured or determined by a gel permeation chromatography, for example, in accordance with ASTM D5296-19.

[0126] According to one embodiment of the present invention, the (b) cationic polymer is selected from polylysines.

[0127] Polylysines correspond to the condensation of several amino acids of lysine. Polylysine can 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 which is soluble in polar solvents such as water.

[0128] Polylysine can be, for example, epsilon-polylysine (or referred as “ε-polylysine”), which is a condensation of amino groups at the ε-position and carboxyl groups of lysines, or alphapolylysine (or referred as “α-polylysine”), which is a condensation of amino groups at the α- position and carboxyl groups of lysines. Polylysine is commercially available in various forms, such as poly D-lysine and poly L-lysine. The polylysine is generally a condensate of L-lysines, i.e., poly L-lysine.

[0129] As an example of polylysine, mention may be made of:

[0130] Epsilon-poly-L-lysine of JNC CORPORATION which is a 25% solution of Epsilon- poly-L-lysine having a molecular weight of around 4,700 in aqueous solution; and

[0131] Polylysine of Shandong Freda Biotechnology which is in the form of white to creamy yellow powder and has a molecular weight between 4,130 and 5,776.

[0132] According to one particular embodiment, the polylysine may be a modified polylysine, for example, a polylysine with a fatty chain 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 the application FR2853533.

[0133] The polylysine may be in the form of organic or inorganic salts. The addition salts with an acid are, for example, the hydrochloric or hydrobromic acid, sulfuric acid, citric acid, succinic acid, tartaric acid, lactic acid, para-toluenesulphonic acid, phosphoric acid, or acetic acid salts; or fatty acid salts, such as linoleic acid, oleic acid, palmitic acid, stearic acid, behenic acid, and 18-methylicosanoic acid. The addition salts with a base are, for example, a sodium salt, a calcium salt, or a hydroxyalkylamine salt, for example, N-methylglucamine, aminopropane diol or triethanolamine.

[0134] In some preferred embodiments of the present invention, the polylysine of the present invention is present in a form of a single molecule in the composition, or is not covalently bound to other compounds. In one embodiment of the present invention, the polylysine is not covalently bound to dye compounds. In one embodiment of the present invention, the polylysine is not covalently bound to polyorganosiloxane compounds. The term “polyorganosiloxane” is well-known in the art to mean compounds having Si-0 main chain and organic functional groups attached to the main chain.

[0135] In another embodiment of the present invention, the polylysine is in the free form. The term “free form” here indicates that the polylysine is not covalently bound to any other compounds.

[0136] The amount of the (b) 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.

[0137] The amount of the (b) 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 (b) cationic polymer(s) be 1% by weight or less, relative to the total weight of the composition.

[0138] The amount of the (b) 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.

[0139] It may be even more preferable that the amount of the (b) cationic polymer(s) be from 0.1% to 1% by weight, relative to the total weight of the composition.

[0140] In the context of the present specification, any combinations of the upper limit values and the lower limit values above can be available to represent the preferred range of the amount.

[0141] The (a) glycolipid(s) may be included in the composition according to the present invention in an amount which is the same as or greater than that of the (b) cationic polymer(s).

[0142] Thus, the weight ratio of the amount of the (a) glycolipid(s) / the amount of the (b) cationic polymer(s) in the composition according to the present invention may be 1 or more, preferably 2 or more, and more preferably 3 or more. In another embodiment, the weight ratio of the amount of the (a) glycolipid(s) / the amount of the (b) cationic polymer(s) in the composition according to the present invention may be 1 or more, preferably 10 or more, and more preferably 20 or more.

[0143] (Third Ingredient)

[0144] The composition according to the present invention comprises, as the third ingredient (c), (c1) at least one polyol, (c2) at least one liquid fatty alcohol, or (c3) mixtures thereof.

[0145] (Polyol) The composition according to the present invention may comprise (c1) at least one polyol. A single type of polyol may be used, or two or more different types of polyols may be used in combination.

[0146] The term “polyol” here means an alcohol having two or more hydroxyl (OH) groups.

[0147] The (c1) polyol may have 5 or more, preferably 6 or more, and more preferably 6, hydroxyl groups.

[0148] The (c1) polyol may have 10 or less, preferably 9 or less, and more preferably 8 or less, hydroxyl groups.

[0149] Thus, the (c1) polyol may have from 5 to 10 hydroxyl groups, preferably from 5 to 9 hydroxyl groups, and more preferably from 6 to 8 hydroxyl groups.

[0150] It is preferable that the (c1) polyol, which may have 5 or more, preferably 6 or more, and more preferably 6, hydroxyl groups be selected from sugar alcohols.

[0151] The term “sugar alcohol” here means a compound obtained by the reduction of the possible ketone or aldehyde group of a sugar to an alcohol group. Thus, a sugar alcohol has several alcohol functions.

[0152] The term “sugar” here means an oxygen-bearing hydrocarbon-based compound containing several alcohol functions, with or without aldehyde or ketone functions, and which contains at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides or polysaccharides.

[0153] Examples of suitable sugars that may be mentioned include glucose, galactose, mannose, maltose, sucrose (or saccharose), trehalose, lactose, and derivatives thereof, especially alkyl derivatives, such as methyl derivatives, for instance methylglucose.

[0154] The sugar alcohol may be selected from hexytols (C6H8(OH)6), heptitols (C7H9(OH)7), octitols (C8H10(OH)8) and mixtures thereof.

[0155] Thus, examples of suitable sugar alcohols that may be mentioned include sorbitol, mannitol, galactitol, fucitol, iditol, inositol, volemitol, and a mixture thereof.

[0156] It is more preferable that the (c1) polyol, which may have 5 or more, preferably 6 or more, and more preferably 6, hydroxyl groups be selected from the group consisting of sorbitol, mannitol, and a mixture thereof.

[0157] The amount of the (c1) polyol(s) in the composition according to the present invention is 1% by weight or more, preferably 2% by weight or more, and more preferably 2.5% by weight or more, relative to the total weight of the composition.

[0158] The amount of the (c1) polyol(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.

[0159] The amount of the (c1) polyol(s) in the composition according to the present invention may be from 1% to 20% by weight, preferably from 2% to 15% by weight, and more preferably from 2.5% to 10% by weight, relative to the total weight of the composition.

[0160] In the context of the present specification, any combinations of the upper limit values and the lower limit values above can be available to represent the preferred range of the amount.

[0161] (Liquid Fatty Alcohol)

[0162] The composition according to the present invention may comprise (c2) at least one liquid fatty alcohol. A single type of liquid fatty alcohol may be used, or two or more different types of liquid fatty alcohols may be used in combination.

[0163] The term “fatty” here means the inclusion of a relatively large number of carbon atoms. Thus, alcohols which have 6 or more, preferably 8 or more, and more preferably 10 or more carbon atoms are encompassed within the scope of fatty alcohols. The fatty alcohols may be saturated or unsaturated. The fatty alcohol may be linear or branched. Two or more fatty alcohols may be used in combination.

[0164] The (c2) liquid fatty alcohol is in the form of a liquid at a room temperature (25 °C) under atmospheric pressure (760 mmHg or 101325 Pa). In other words, the (c2) liquid fatty alcohol has a melting point of less than 25°C under atmospheric pressure (760 mmHg or 101325 Pa).

[0165] The (c2) liquid fatty alcohol may have the structure R-OH wherein R is chosen from saturated and unsaturated, linear and branched radicals containing from 6 to 40 carbon atoms, for example from 8 to 30 carbon atoms. In at least one embodiment, R is chosen from C12-C24alkyl and C12-C24alkenyl groups. R may be or may not be substituted with at least one hydroxyl group.

[0166] It is preferable that the (c2) liquid fatty alcohol be selected from C12to C24linear or branched saturated fatty alcohols, C12to C24linear or branched unsaturated fatty alcohols, and mixtures thereof.

[0167] Non-limiting examples of the (c2) liquid fatty alcohol that may be mentioned include lauryl alcohol, hexyldecanol, oleyl alcohol, isostearyl alcohol, octyldodecanol, decyltetradecanol, and a mixture thereof.

[0168] It is more preferable that the (c2) liquid fatty alcohol be selected from the group consisting of isostearyl alcohol, oleyl alcohol, and a mixture thereof.

[0169] The amount of the (c2) liquid fatty alcohol(s) in the composition according to the present invention is 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 (c2) liquid fatty alcohol(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 1% by weight or less, relative to the total weight of the composition.

[0171] The amount of the (c2) liquid fatty alcohol(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 1% by weight, relative to the total weight of the composition. In the context of the present specification, any combinations of the upper limit values and the lower limit values above can be available to represent the preferred range of the amount.

[0172] (Anionic Surfactant)

[0173] The composition according to the present invention may comprise (d) at least one anionic surfactant. A single type of an anionic surfactant may be used, or two or more different types of anionic surfactants may be used in combination.

[0174] Preferably, the (d) anionic surfactant is selected from taurate surfactants.

[0175] The term “taurate surfactant” here means an anionic surfactant comprising at least one taurate moiety. The taurate surfactant can be also called as a taurate-based surfactant.

[0176] The taurate surfactant is preferably acyl taurate, more preferably N-acyl taurate, and even more preferably N-acyl methyl taurate (i.e. N-acyl-N-methyltaurate).

[0177] The taurate surfactants include those of Formula I, below: wherein,

[0178] R7is (C8-C22)alkyl;

[0179] R8is H or (C1-C4)alkyl;

[0180] R9and R10are each independently H or (C1-C4)alkyl; and M+is a sodium, potassium, or ammonium cation.

[0181] 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, beef tallow 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.

[0182] For example, the 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. Likewise, in some instances, the taurate surfactant is sodium methyl cocoyl taurate.

[0183] Examples of the taurate surfactant include, but are not limited to: sodium salt of palm kernel oil methyltaurate, sold under the name Hostapon CT Pate® by Clariant; sodium N-cocoyl-N-methyltaurate, sold under the name Hostapon LT-SF® by

[0184] 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.

[0185] The amount of the (d) 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 total weight of the composition.

[0186] The amount of the (d) 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.

[0187] The amount of the (d) 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.

[0188] In one embodiment of the present invention, the total amount of the (a) glycolipid(s) and the (d) anionic surfactant(s) in the composition according to the present invention 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.

[0189] In another embodiment of the present invention, the weight ratio of the amount of the (a) glycolipid(s) / the total amount of the (a) glycolipid(s) and the (d) anionic surfactant(s) in the composition according to the present invention may be from 0.1 to 1, preferably 0.15 to 0.75, and more preferably from 0.2 to 0.5.

[0190] (Amphoteric Surfactant)

[0191] The composition according to the present invention may comprise (e) at least one amphoteric surfactant. A single type of amphoteric surfactant may be used, or two or more different types of amphoteric surfactants may be used in combination.

[0192] The (e) amphoteric (or zwitterionic) surfactants can 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 including 8 to 22 carbon atoms and containing at least one water-solubilizing anionic group (for example, carboxylate, sulphonate, sulphate, phosphate or phosphonate).

[0193] Preferably, the (e) amphoteric surfactant is selected from the group consisting of betaines and amidoaminecarboxylated derivatives.

[0194] More preferably, the (e) amphoteric surfactant is selected from betaine-type surfactants.

[0195] 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(C1-C8)alkylbetaines, sulfobetaines, (C1-C8)alkylsulfobetaines, phosphobetaines, (C1-C8)alkylphosphobetaines, and (C8-C24)alkylamido(C1- C8)alkylsulfobetaines. In one embodiment, the amphoteric surfactants of betaine type are chosen from (C8-C24)alkylbetaines, (C8-C24)alkylamido(C1-C8)alkylsulfobetaines, sulfobetaines, (C1-C8)alkylsulfobetaines and phosphobetaines.

[0196] 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 cocobetaine, laurylbetaine, cetylbetaine, coco / oleamidopropylbetaine, cocamidopropylbetaine, palmitamidopropylbetaine, stearamidopropylbetaine, cocamidoethylbetaine, cocamidopropylhydroxysultaine, oleamidopropylhydroxysultaine, cocohydroxysultaine, laurylhydroxysultaine, and cocosultaine, alone or as mixtures.

[0197] The betaine-type amphoteric surfactant (betaines) may be an alkylbetaine an alkylsulfobetaine, and an alkylamidoalkylbetaine, in particular cocobetaine, sulfopropylbetaine, and cocamidopropylbetaine.

[0198] Among the amidoaminecarboxylated derivatives, mention may be made of the products sold under the name Miranol, as described in U.S. Pat. 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 Amphocarboxyglycinates and Amphocarboxypropionates, with the respective structures: R1-CONHCH2CH2-N+(R2)(R3)(CH2COO-) M+X- (B1) in which: R1denotes an alkyl radical of an acid R1-COOH present in hydrolysed coconut oil, a heptyl, nonyl or undecyl radical,

[0199] R2denotes a beta-hydroxyethyl group,

[0200] R3denotes a carboxymethyl group,

[0201] M+denotes a cationic ion derived from alkaline metals such as sodium; ammonium ion; or an ion derived from an organic amine;

[0202] X" denotes an organic or inorganic anionic ion such as halides, acetates, phosphates, nitrates, alkyl(C1-C4)sulfates, alkyl(C1-C4)- or alkyl(C1-C4)aryl-sulfonates, particularly methylsulfate and ethylsulfate; or M+and X" are not present; R1'-CONHCH2CH2-N(B)(C) (B2) in which: R1' denotes an alkyl radical of an acid Rf-COOH present in coconut oil or in hydrolysed linseed oil, an alkyl radical, such as a C?, C9, Ci 1 or C13 alkyl radical, a C17 alkyl radical and its iso-form, or an unsaturated C17 radical,

[0203] B represents -CH2CH2OX',

[0204] C represents -(CH2)Z-Y', with z=1 or 2,

[0205] X' denotes a -CH2-COOH group, -CH2-COOZ’, -CH2CH2-COOH, -CH2CH2-COOZ’ or a hydrogen atom, and

[0206] Y' denotes -COOH, -COOZ’, -CH2-CHOH-SO3Z’, -CH2-CHOH-SO3H radical or a -CH2- CH(OH)-SO3-Z’ radical, wherein Z’ represents an ion of an alkaline or alkaline earth metal such as sodium, an ion derived from an organic amine or an ammonium ion; and Ra-NH-CH(Y”)-(CH2)n-C(O)-NH-(CH2)n’-N(Rd)(Re) (B’2) in which:

[0207] Y” denotes -C(O)OH, -C(O)OZ”, -CH2-CH(OH)-SO3H or -CH2-CH(OH)-SO3-Z”, wherein Z” denotes a cationic ion derived from alkaline metal or alkaline-earth metals such as sodium, an ion derived from organic amine or an ammonium ion;

[0208] Rd and Re denote a C1-C4alkyl or C1-C4hydroxyalkyl radical;

[0209] Ra” denotes a C10-C30group alkyl or alkenyl group from an acid, and n and n’ independently denote an integer from 1 to 3.

[0210] The amphoteric surfactant with formula Bl and B2 may be selected from (C8-C24)-alkyl amphomonoacetates, (C8-C24)alkyl amphodiacetates, (C8-C24)alkyl amphomonopropionates, and (C8-C24)alkyl amphodipropionates.

[0211] 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, Lauroamphodipropionic acid and Cocoamphodipropionic acid.

[0212] By way of example, mention may be made of the cocoamphodiacetate sold under the trade name Miranol® C2M concentrate by the company Rhodia Chimie.

[0213] Among compounds of formula (B’2), mention may be made of sodium diethylaminopropyl cocoaspartamide (CTFA) marketed by CHIMEX under the denomination CHIMEXANE HB.

[0214] The amount of the (e) 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.

[0215] The amount of the (e) amphoteric 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.

[0216] The amount of the (e) amphoteric surfactant(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.

[0217] In one embodiment of the present invention, the weight ratio of the amount of the (e) amphoteric surfactant(s) / the total amount of the (a) glycolipid(s) and the (d) anionic surfactant(s) in the composition according to the present invention may be 0.5 or more, preferably 0.75 or more, and more preferably 1 or more.

[0218] In another embodiment of the present invention, the weight ratio of the amount of the (e) amphoteric surfactant(s) / the total amount of the (a) glycolipid(s) and the (d) anionic surfactant(s) in the composition according to the present invention may be 0.7 or more, preferably 0.8 or more, and more preferably 0.9 or more. (Water)

[0219] The composition according to the present invention may comprise (f) water.

[0220] The amount of the (f) 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.

[0221] The amount of the (f) water in the composition according to the present invention may be 95% by weight or less, preferably 90% by weight or less, and more preferably 85% by weight or less, relative to the total weight of the composition.

[0222] The amount of the (f) water in the composition according to the present invention may be from 50% to 95% by weight, preferably from 60% to 90% by weight, and more preferably from 70% to 85% by weight, relative to the total weight of the composition.

[0223] (pH)

[0224] 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.

[0225] The pH of the composition according to the present invention may be adjusted by adding at least one alkaline agent and / or at least one acid. The pH of the composition according to the present invention may also be adjusted by adding at least one buffering agent.

[0226] (Optional Ingredient)

[0227] The composition according to the present invention may comprise, in addition to the aforementioned ingredients, optional ingredient(s) typically employed in cosmetics, specifically, cationic or nonionic surfactants / emulsifiers, anionic surfactants other than the (a) glycolipid or the (d) anionic surfactant; hydrophilic or lipophilic thickeners derived from, for example, synthetic thickeners; volatile or non-volatile organic solvents such as ethanol; cationic polymers other than polylysines; anionic polymers; amphoteric polymers; nonionic polymers; silicones and silicone derivatives; fatty acids; natural extracts derived from animals or vegetables other than the (b) cationic polymer; waxes; preservatives; antioxidants; salts; and the like, within a range which does not impair the effects of the present invention.

[0228] The composition according to the present invention may comprise the above optional ingredient(s) in an amount of from 0.01% to 30% by weight, preferably from 0.05% to 20% by weight, and more preferably from 0.1% to 10% by weight, relative to the total weight of the composition.

[0229] The amount of silicone(s) in the composition according to the present invention may be 1% by weight or less, preferably 0.1% by weight or less, and more preferably 0.01% by weight or less, relative to the total weight of the composition. It is in particular preferable that the composition according to the present invention include no silicone.

[0230] (Embodiments)

[0231] According to a preferred embodiment, the composition according to the present invention comprises, relative to the total weight of the composition: from 0.01% to 20% by weight of (a) at least one glycolipid; from 0.01% to 10% by weight of (b) at least one cationic polymer selected from polylysines; and from 1% to 20% by weight of (c1) at least one polyol and / or from 0.01% to 10% by weight of (c2) at least one liquid fatty alcohol.

[0232] According to a more preferred embodiment, the composition according to the present invention comprises, relative to the total weight of the composition: from 0.1% to 15% by weight of (a’) at least one glycolipid selected from sophorolipids, rhamnolipids and mixtures thereof; from 0.05% to 5% by weight of (b’) at least one polylysine having a molecular weight of more than 1,000; and from 2% to 15% by weight of (c1 ’) at least one polyol having 5 or more hydroxyl groups and / or from 0.05% to 5% by weight of (c2’) at least one liquid fatty alcohol selected from C12to C24linear or branched saturated fatty alcohols, C12to C24linear or branched unsaturated fatty alcohols, and mixtures thereof.

[0233] According to an even more preferred embodiment, the composition according to the present invention comprises, relative to the total weight of the composition: from 1% to 10% by weight of (a”) at least one rhamnolipid; from 0.1% to 3% by weight of (b”) at least one polylysine having a molecular weight of more than 1,000 and less than 20,000; and from 2.5% to 10% by weight of (c1 ”) at least one sugar alcohol having 5 or more hydroxyl groups selected from the group consisting of sorbitol, mannitol and a mixture thereof and / or from 0.1% to 1% by weight of (c2”) at least one liquid fatty alcohol selected from the group consisting of isostearyl alcohol, oleyl alcohol and a mixture thereof.

[0234] [Preparation]

[0235] The composition according to the present invention can be prepared by mixing the essential ingredient(s) as explained above, and optional ingredient(s), if necessary, as explained above.

[0236] The method and means to mix the above essential and optional ingredients are not limited. Any conventional method and means can be used to mix the above essential and optional ingredients to prepare the composition according to the present invention.

[0237] 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. Also, heating may not be necessary.

[0238] [Form]

[0239] The composition according to the present invention may be present in any form.

[0240] For example, the composition according to the present invention can be in the form of a solution, in particular an aqueous solution, a toner, a serum, or a lotion.

[0241] In another embodiment, the composition according to the present invention can be in the form of a gel. In this embodiment, the composition according to the present invention may be packaged with an auto foam pump which enables consumers to use the composition as a foam.

[0242] The compositions can have a viscosity of, for example, 700 mPa.s or more, preferably 800 mPa.s or more, more preferably 900 mPa.s or more and even more preferably 1000 mPa.s or more at 25°C under atmospheric pressure (760 mmHg or 101325 Pa).

[0243] The composition according to the present invention, before being diluted with, for example, water, can have a transparent or translucent appearance, preferably a transparent appearance.

[0244] The transparency may be measured by measuring the turbidity (for example, with 2100Q Portable Turbidimeter from HACH). The turbidity of the composition according to the present invention may be below 400 NTU (translucent), preferably below 350 NTU, more preferably below 300 NTU (transparent).

[0245] [Cosmetic Application]

[0246] 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 for application onto a keratin material. Keratin material here means a material containing keratin as a main constituent element, and examples thereof include the skin, scalp, nails, lips, hair, and the like. Thus, it is preferable that the cosmetic composition according to the present invention be used for a cosmetic process for the keratin material, in particular skin.

[0247] Thus, the cosmetic composition according to the present invention may be a skin cosmetic composition, preferably a skin care composition, and more preferably a face care composition.

[0248] 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 be a cleansing cosmetic composition, more preferably a cleansing cosmetic composition for skin, and even more preferably a cleansing cosmetic composition for face.

[0249] In another embodiment, the composition according to the present invention can also be used as a cleansing cosmetic composition for keratin fibers such as hair, preferably as a shampoo.

[0250] [Cosmetic Process and Use]

[0251] The present invention may relate to: a cosmetic process for a keratin material such as skin, comprising applying to the keratin material the composition according to the present invention; and optionally removing the composition from the keratin material, or a use of the composition according to the present invention for caring for or cleansing a keratin material such as skin.

[0252] The cosmetic process here means a non-therapeutic cosmetic method, such as for a cosmetic method for caring for or cleansing the surface of a keratin material such as skin. The step of removing in the cosmetic process according to the present invention can be performed by, for example, rinsing off with water the composition according to the present invention from a keratin material such as skin.

[0253] If the step of removing is not performed, the cosmetic process according to the present invention can be useful for caring for a keratin material such as skin, because the (a) glycolipid can provide the keratin material with anti-inflammation, anti-allergic, or antibacterial properties, which would be useful for, in particular, caring for skin with acne and sensitive skin.

[0254] If the step of removing is performed, the cosmetic process according to the present invention can be useful for cleansing a keratin material such as skin, because the (a) glycolipid can function as a surfactant.

[0255] The present invention may also relate to a use of (b) at least one cationic polymer selected from polylysines, in a composition comprising

[0256] (a) at least one glycolipid, and

[0257] (c1) at least one polyol, wherein the amount of the (c1) polyol(s) in the composition is 1% by weight or more, preferably 2% by weight or more, and more preferably 2.5% by weight or more, relative to the total weight of the composition, in order to make the composition provide a keratin material with enhanced anti-inflammation, anti-allergic, or anti-bacterial properties, which would be useful for, in particular, caring for skin with acne and sensitive skin.

[0258] The present invention may also relate to a use of (c1) at least one polyol in a composition comprising

[0259] (a) at least one glycolipid, and

[0260] (b) at least one cationic polymer selected from polylysines, wherein the amount of the (c1) polyol(s) in the composition is 1% by weight or more, preferably 2% by weight or more, and more preferably 2.5% by weight or more, relative to the total weight of the composition, in order to increase the viscosity of the composition, preferably 700 mPa.s or more, more preferably 800 mPa.s or more, even more preferably 900 mPa.s or more, and in particularly preferably 1000 mPa.s or more at 25°C under atmospheric pressure (760 mmHg or 101325 Pa).

[0261] The above explanations regarding the (a) glycolipid, the (b) cationic polymer, and the (c1) polyol for the composition according to the present invention, can apply to those in the above use.

[0262] The present invention may also relate to a use of (b) at least one cationic polymer selected from polylysines, in a composition comprising

[0263] (a) at least one glycolipid, and (c2) at least one liquid fatty alcohol in order to make the composition provide a keratin material with enhanced anti-inflammation, anti-allergic, or anti-bacterial properties, which would be useful for, in particular, caring for skin with acne and sensitive skin.

[0264] The present invention may also relate to a use of (c2) at least one liquid fatty alcohol in a composition comprising

[0265] (a) at least one glycolipid, and

[0266] (b) at least one cationic polymer selected from polylysines, in order to stabilize the composition and increase the viscosity of the composition, preferably 700 mPa.s or more, more preferably 800 mPa.s or more, even more preferably 900 mPa.s or more, and in particularly preferably 1000 mPa.s or more at 25°C under atmospheric pressure (760 mmHg or 101325 Pa).

[0267] The term “stabilize" here means that the use according to the present invention can thermally stabilize the composition for a long period of time. For example, the aspects of the composition can be stabilized at a cold temperature of, for example, -5 °C and 4°C for 30 days or more.

[0268] The above explanations regarding the (a) glycolipid, the (b) cationic polymer, and the (c2) liquid fatty alcohol for the composition according to the present invention, can apply to those in the above use.

[0269] EXAMPLES

[0270] The present invention will be described in a more detailed manner by way of examples. However, they should not be construed as limiting the scope of the present invention.

[0271] Examples 1A-3A and Comparative Examples 1A-3A

[0272] [Preparations]

[0273] Each of the compositions according to Examples 1 A-3A and Comparative Examples 1A-3A was prepared by mixing the ingredients shown in Table 1 A. The numerical values for the amounts of the ingredients in Table 1 A are all based on “% by weight” as active materials.

[0274] Table 1A

[0275] *1 sold by the Evonik Goldschmidt under the name Rheance One

[0276] *2 sold by the Shandong Freda Biotechnology under the name Polylysine

[0277] *3 sold by the Kasyap Sweetners under the name Sorbitol

[0278] [Evaluations]

[0279] (Viscosity)

[0280] The viscosity of each of the compositions according to Examples 1A-3A and Comparative Examples 1A-3A was measured with VISCOMAN™ (GILSON Technology) at room temperature (25°C) under atmospheric pressure (760 mmHg or 101325 Pa). The viscosity was measured 3 times and averaged.

[0281] The results are shown in Table 1A.

[0282] A composition with a viscosity below 700 mPa.s would be easy to drip from hands.

[0283] Therefore, it is preferable for the composition to have a viscosity higher than 700 mPa.s.

[0284] (Dilution Test)

[0285] Each of the compositions according to Examples 1A-3A and Comparative Examples 1A-3A was diluted with water to have 10 times volume at room temperature (25°C) under atmospheric pressure (760 mmHg or 101325 Pa). The dilution test simulates the use of the composition under wet conditions such as those in a bath room.

[0286] The appearance of each composition was visually evaluated in accordance with the following criteria.

[0287] Good: Appearance changed from transparent to hazy or precipitation was observed.

[0288] Poor: No change in appearance was observed.

[0289] The more the precipitation is caused in the dilution test, the more the composition can provide a keratin material with a deposition including glycolipids.

[0290] The results are shown in Table 1 A.

[0291] (Summary)

[0292] The compositions according to Examples 1A-3A were found to have a relatively higher viscosity of more than 700 mPa.s and could form good deposition of glycolipids on the skin.

[0293] The composition according to Comparative Example 1A which did not include both the (b) cationic polymer (polylysine) and the (c1) polyol could not form a good deposition of glycolipids on the skin, and had a relatively lower viscosity that creates an issue for the application of the composition on the skin by the consumer.

[0294] The composition according to Comparative Example 2A which included the (b) cationic polymer (polylysine) but did not include the (c1) polyol had a relatively lower viscosity that would create an issue for the application of the composition on the skin by the consumer. The composition according to Comparative Example 3 A which included the (b) cationic polymer (polylysine) and (c1) polyol in an amount of 0.5% by weight had a relatively lower viscosity that would create an issue for the application of the composition on the skin by the consumer.

[0295] Examples 1B-3B and Comparative Examples 1B-4B

[0296] [Preparations]

[0297] Each of the compositions according to Examples 1B-3B and Comparative Examples 1B-4B was prepared by mixing the ingredients shown in Table 1B. The numerical values for the amounts of the ingredients in Table IB are all based on “% by weight” as active materials.

[0298] Table 1B

[0299] *1 sold by the Evonik Goldschmidt under the name Rheance One

[0300] *2 sold by the Shandong Freda Biotechnology under the name Polylysine

[0301] *3 sold by the Croda under the name Prisorine 3515

[0302] [Evaluations]

[0303] (Viscosity)

[0304] The viscosity of each of the compositions according to Examples 1B-3B and Comparative Examples 1B-4B was measured with VISCOMAN™ (GILSON Technology) at room temperature (25°C) under atmospheric pressure (760 mmHg or 101325 Pa). The viscosity was measured 3 times and averaged.

[0305] The results are shown in Table IB.

[0306] A composition with a viscosity below 700 mPa.s would be easy to drip from hands.

[0307] Therefore, it is preferable for the composition to have a viscosity higher than 700 mPa.s.

[0308] (Stability)

[0309] Each of the compositions according to Examples 1B-3B and Comparative Examples 1B-4B was stored in a transparent glass bottle and maintained at -5°C or 4°C for 30 days. After 30 days, the appearance of each composition was visually evaluated in accordance with the following criteria.

[0310] Good: Transparent Poor: Hazy or Turbid

[0311] The results are shown in Table 1B.

[0312] (Dilution Test)

[0313] Each of the compositions according to Examples 1B-3B and Comparative Examples 1B-4B was diluted with water to have 10 times volume at room temperature (25°C) under atmospheric pressure (760 mmHg or 101325 Pa). The dilution test simulates the use of the composition under wet conditions such as those in a bath room.

[0314] The appearance of each composition was visually evaluated in accordance with the following criteria.

[0315] Good: Appearance changed from transparent to hazy or precipitation was observed.

[0316] Poor: No change in appearance was observed.

[0317] The more the precipitation is caused in the dilution test, the more the composition can provide a keratin material with a deposition including glycolipids.

[0318] The results are shown in Table IB.

[0319] (Summary) The compositions according to Examples 1B-3B were found to have a relatively higher viscosity of more than 700 mPa.s, was stable to maintain its transparent aspect at a variety of temperatures for a long period of time, and could form good deposition of glycolipids on the skin.

[0320] The composition according to Comparative Example 1B which did not include both the (b) cationic polymer (polylysine) and the (c2) liquid fatty alcohol was stable but could not form a good deposition of glycolipids on the skin.

[0321] The composition according to Comparative Example 2B which included the (b) cationic polymer (polylysine) but did not include the (c2) liquid fatty alcohol had a relatively lower viscosity that create issue for the application of the composition on the skin by the consumer.

[0322] The composition according to Comparative Example 3B which included the (b) cationic polymer (polylysine) and solid fatty alcohol (cetyl alcohol) was unstable.

[0323] The composition according to Comparative Example 4B which included the (b) cationic polymer (polylysine) and solid fatty alcohol (cetearyl alcohol) unstable.

Claims

CLAIMS1. A composition, preferably a cosmetic composition, and more preferably a cleansing cosmetic composition, comprising:(a) at least one glycolipid;(b) at least one cationic polymer selected from polylysines; and(c) (c1) at least one polyol, (c2) at least one liquid fatty alcohol, or (c3) mixtures thereof, wherein the amount of the (c1 ) polyol(s) in the composition is 1 % by weight or more, preferably 2% by weight or more, and more preferably 2.5% by weight or more, relative to the total weight of the composition.

2. The composition according to Claim 1, wherein the (a) glycolipid is selected from rhamnolipids, sophorolipids, and mixtures thereof, and preferably from rhamno lipids.

3. The composition according to Claim 1 or 2, wherein the amount of the (a) glycolipid(s) in the composition is 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.

4. The composition according to any one of Claims 1 to 3, wherein the (b) cationic polymer has a molecular weight of more than 1,000, preferably more than 1,500, and more preferably more than 2,000.

5. The composition according to any one of Claims 1 to 4, wherein the amount of the (b) cationic polymer(s) in the composition is 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.

6. The composition according to any one of Claims 1 to 5, wherein the (c1) polyol has 5 or more, preferably 6 or more, hydroxyl groups.

7. The composition according to any one of Claims 1 to 6, wherein the (c1) polyol is selected from sugar alcohols, preferably the group consisting of sorbitol, mannitol and a mixture thereof.

8. The composition according to any one of Claims 1 to 7, wherein the amount of the (c1) polyol(s) in the composition is from 1% to 20% by weight, preferably from 2% to 15% by weight, and more preferably 2.5% to 10% by weight or more, relative to the total weight of the composition.

9. The composition according to any one of Claims 1 to 8, wherein the (c2) liquid fatty alcohol is selected from C12to C24linear or branched saturated fatty alcohols, C12to C24linear or branched unsaturated fatty alcohols, and mixtures thereof.

10. The composition according to any one of Claims 1 to 9, wherein the (c2) liquid fatty alcohol is selected from the group consisting of lauryl alcohol, hexyldecanol, oleylalcohol, isostearyl alcohol, octyldodecanol, decyltetradecanol, and a mixture thereof, preferably isostearyl alcohol, oleyl alcohol and a mixture thereof.

11. The composition according to any one of Claims 1 to 10, wherein the amount of the (c2) liquid fatty alcohol(s) in the composition is from 0.01% to 10% by weight, preferably from 0.05% to 5% by weight, and more preferably 0.1% to 1% by weight or more, relative to the total weight of the composition.

12. The composition according to any one of Claims 1 to 11 , wherein the composition further comprises (d) at least one anionic surfactant, preferably selected from taurate surfactants.

13. The composition according to Claim 12, wherein the amount of the (d) anionic surfactant(s) in the composition is 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.

14. The composition according to any one of Claims 1 to 13, wherein the composition further comprises (e) at least one amphoteric surfactant.

15. The composition according to Claim 14, wherein the amount of the (e) amphoteric surfactant(s) in the composition is 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.