Coacervate cleansing composition with mineral particles

Abstract

TITLE: Coacervate Cleansing Composition with Mineral Particle. The disclosure relates to compositions comprising (a) at least one amphoteric surfactant, (b) at least one glycolipid, (c) at least one cationic polymer at a concentration of approximately 0.05% to approximately 2%; (d) at least one mineral particle, and (e) at least one cosmetically acceptable solvent, in which the cleansing system is substantially free of phenoxyethanol, and in which the pH of the composition is between approximately 4 and approximately 8, and in which the weight ratio of a to b is approximately 0.4 to approximately 4, and in which the combined concentration of a and b is approximately 10% to approximately 20% of the total weight of the composition. The compositions may be used as rinse-off compositions to cleanse the skin and deposit mineral particles. Figure for abstract: none

Description

Title of the invention: Coacervate cleaning composition with mineral particle technical field

[0001] This disclosure relates to a skincare composition, in particular, a coacervate cleansing composition containing a mineral particle. BACKGROUND

[0002] Current skincare routines typically require multiple steps and products to achieve desired skincare results. Typical skincare routines usually include a skin cleansing step followed by another product to impart various benefits to the skin, such as hydration, brightening, or UV protection. Common skin cleansers usually rely on surfactants to provide cleansing and do not deposit skincare actives onto the skin.

[0003] There is a market need for skin cleansing compositions that provide enhanced deposition of skin-care actives, particularly mineral particles. As such, consumers desire new and improved skin cleansing compositions that can cleanse the skin and also deposit mineral particles for brightening or sun protection purposes. SUMMARY

[0004] In various embodiments, a coacervate cleaning system is proposed, comprising: a. at least one amphoteric surfactant; b. at least one glycolipid; c. at least one cationic polymer at a concentration of approximately 0.05% to approximately 2%; d. at least one mineral particle; and e. at least one cosmetically acceptable solvent;

[0005] wherein the cleaning system is essentially free of phenoxyethanol, and wherein the pH of the composition is between 4 and 8, and wherein the weight ratio of a to b is from about 0.4 to about 4, and wherein the total concentration of a and b combined is from about 10 to about 20% of the total weight of the composition. In one embodiment, at least one mineral particle is selected from titanium dioxide, zinc oxide, and mixtures thereof.

[0006] In certain embodiments, a coacervate cleaning system is proposed, comprising: a. at least one amphoteric surfactant selected from the group consisting of cocamidopropyl hydroxysultaine and coco betaine at a rate of about 3% to about 8% by weight, relative to the total weight of the composition; b. at least one glycolipid selected from the group consisting of rhamnolipid and sophorolipid at a rate of about 2% to about 7% by weight, relative to the total weight of the composition; c. at least one cationic polymer selected from the group consisting of chitosan and polylysine at a rate of about 0.1% to about 0.2%; d. at least one mineral particle selected from the group consisting of titanium dioxide and zinc oxide in amounts of approximately 1% to approximately 10%; and e. water;

[0007] wherein the cleaning system is essentially free of phenoxyethanol, and wherein the pH of the composition is between 4 and 8, and wherein the weight ratio between a and b is from about 0.4 to about 4.

[0008] In certain embodiments, a method for depositing at least one mineral particle on the skin during cleansing is proposed, comprising (i) applying a coacervate cleansing system to the skin of a subject, comprising: a. at least one amphoteric surfactant; b. at least one glycolipid; c. at least one cationic polymer at a concentration of approximately 0.05% to approximately 2%; d. at least one mineral particle; and e. at least one cosmetically acceptable solvent;

[0009] wherein the cleansing system is essentially free of phenoxyethanol, and wherein the pH of the composition is between 4 and 8, and wherein the weight ratio between a and b is about 0.4 to about 4, and wherein the total concentration of a and b combined is about 10% to about 20% of the total weight of the composition, and (ii) the removal of the cleansing system from the skin.

[0010] The coacervat system described in the present invention is a unique phenomenon that demonstrates enhanced stability, which is beneficial during skin cleansing. The coacervat phenomenon is demonstrated by the phase transition of the system, which initially appears clear and then cloudy after dilution with water. This coacervat cleansing system offers a unique cleansing experience characterized by enhanced foaming properties and good stability.

[0011] The described coacervat cleansing system has unique physical characteristics and becomes foamy when diluted with water, which could enhance the deposition of skincare actives on the skin. It has been surprisingly observed that compositions with the above-disclosed ratio of glycolipids and amphoteric surfactants demonstrate enhanced deposition of TiO2 particles on the skin. BRIEF DESCRIPTION OF THE FIGURES

[0012] [Fig.1] [Fig.1]. Compositions of coacervate cleaning system A to D before dilution.

[0013] [Fig.2] [Fig.2]. Coacervate cleaning system compositions A to D after dilution with water.

[0014] [Fig.3] [Fig.3]. Coacervate cleaning system containing the TiO2 19 composition before rinsing.

[0015] [Fig.4] [Fig.4]. Coacervate cleaning system containing the composition of TiO2 19 after rinsing.

[0016] [Fig.5] [Fig.5]. Non-inventive composition 20 after rinsing.

[0017] [Fig.6] [Fig.6]. Non-inventive composition 21 after rinsing.

[0018] It should be understood that the preceding and following descriptions are given by way of example and explanation only, and are not intended to be restrictive with respect to any claimed subject matter. DETAILED DESCRIPTION

[0019] The disclosure relates to compositions for the deposition of mineral particles on the skin after cleansing the skin and methods of using the compositions. I. Compositions

[0020] Amphoteric surfactants:

[0021] In the various embodiments, the cosmetic cleansing composition comprises at least one amphoteric surfactant (or zwitterionic surfactant). In some embodiments, the cosmetic cleansing composition may include or exclude one or more nonionic, cationic, or anionic surfactants. In some embodiments, the cosmetic cleansing composition includes a combination of amphoteric surfactants.

[0022] In some embodiments, at least one amphoteric surfactant may include an alkyl betaine, an alkylamidopropyl betaine, an alkyl hydroxysultaine, an alkylamidopropyl hydroxysultaine, lauryl hydroxysultaine, an alkylamidopropylamine N-oxide, an alkyldimethylamine N-oxide, cocamidopropyl hydroxysultaine, cocamidopropyl betaine, coco betaine, sodium lauroamphoacetate, disodium cocoamphodiacetate, or a combination thereof. In preferred embodiments, the amphoteric surfactant is selected from cocamidopropyl hydroxysultaine and coco betaine.

[0023] In certain embodiments, at least one amphoteric surfactant may be chosen from, for example, betaines, alkyl sultaines, alkyl amphoathetas and alkyl amphodiacetates, alkyl amphopropionates, amphocarboxylates, alkyl betaines, amidoalkyl betaines, amphophosphates, phosphobetaines, pyrophosphobetaines, carboxyalkyl polyamines, amidoalkyl sultaines, their salts, or mixtures thereof.

[0024] Betaines that can be used in these compositions include those corresponding to the formulas below: CHj cao'

[0025] in which

[0026] - R10 is an alkyl group having 8 to 18 carbon atoms; and

[0027] - n is an integer from 1 to 3.

[0028] Particularly useful betaines include, for example, cocamidopropyl hydroxysultaine, coco betaine, cocamidopropyl betaine, lauryl betaine, laurylhydroxy sulfobetaine, lauryldimethyl betaine, behenyl betaine, capryl / capramidopropyl betaine, lauryl hydroxysultaine, stearyl betaine, and mixtures thereof.

[0029] The hydroxyl sultaines useful in the compositions of the invention include the following 0 CHi RC —— NMO'^î'r"™ N™™ CH^CHCH^Qg CH3 OH

[0030] in which

[0031] - R is an alkyl group having 8 to 18 carbon atony.

[0032] More specific examples include, but are not limited to, cocamidopropyl hydroxysultaine, lauryl hydroxysultaine, or mixtures thereof.

[0033] Useful alkylamphoacetates include those corresponding to the formula

[0034] in which

[0035] - R is an alkyl group having 8 to 18 carbon atoms.

[0036] Useful alkyl amphodiacetates include those corresponding to the formula:

[0037] in which

[0038] - R is an alkyl group having 8 to 18 carbon atoms.

[0039] Non-limiting examples of useful alkyl amphopropionates include cocoamphopropionate, caprylamphopropionate, maisamphopropionate, caproamphopropionate, oléoamphopropionate, isostéaroamphopropionate, stearoamphopropionate, lauroamphopropionate, their salts, or mixtures thereof.

[0040] At least one amphoteric surfactant of the present disclosure may be optionally quaternized secondary or tertiary aliphatic amine derivatives, wherein the aliphatic group is a linear or branched chain comprising 8 to 22 atoms of carbon, said amine derivatives containing at least one anionic group, for example a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

[0041] In preferred embodiments, at least one amphoteric surfactant is selected from cocamidopropyl hydroxysultaine, coco betaine, or mixtures thereof.

[0042] The total concentration of the at least one amphoteric surfactant and the at least one glycolipid is approximately 10% to approximately 20% of the total weight of the composition. The weight ratio between the at least one amphoteric surfactant and the at least one glycolipid is approximately 0.4 to approximately 4. The at least one amphoteric surfactant may be present in the cosmetic cleansing composition, for example, in a range of approximately 3% to approximately 8%, relative to the weight of the cosmetic cleansing composition.

[0043] For example, at least one amphoteric surfactant may be present in the cosmetic cleansing composition as disclosed in a concentration of approximately 3% to approximately 8%, or approximately 3% to approximately 7%, or approximately 3% to approximately 6%, or approximately 3% to approximately 5%, or approximately 3% to approximately 4%, or approximately 3% to approximately 8%, or approximately 4% to approximately 8%, or approximately 5% to approximately 8%, or approximately 6% to approximately 8%, or approximately 7% to approximately 8%, or any appropriate combination, subcombination, range, or subrange of these values ​​by weight relative to the total weight of the cosmetic cleansing composition. However, those skilled in the art will appreciate that other ranges fall within the scope of the invention.

[0044] Glycolipids:

[0045] The composition according to the invention comprises one or more glycolipids.

[0046] The term "glycolipid" means a compound formed from a lipid to which one or more carbohydrate compounds are attached.

[0047] One or more glycolipids may be selected from rhamnolipids, sophorolipids, glucolipids, trehalolipids, cellobiose lipids, mannosylerythritol lipid, and mixtures thereof.

[0048] Glucolipids:

[0049] The one or more glycolipids may be glucolipids, which contain a glucose fraction and may be represented by the general formula (I): TJ

[0050] in which:

[0051] - RI represents a hydrogen atom or a cation,

[0052] - p denotes an integer from 1 to 4, and

[0053] - q denotes an integer from 4 to 10, preferably equal to 6.

[0054] Glycolipids can be produced by the bacterium Alcaligenes sp. MM1.

[0055] The appropriate fermentation processes are reviewed by Mr. 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 dichloromethane:methanol or chloroform:methanol mixture.

[0056] Sophorolipids:

[0057] One or more glycolipids may be sophorolipids, which contain a sophorose fraction and may be represented by the general formula (II):

[0058] in which:

[0059] - R3 and R4 individually represent a hydrogen atom or an acetyl group,

[0060] - R5 represents a saturated or unsaturated hydrocarbon group, hydroxylated or not hydroxylated, having from 1 to 9 carbon atoms, preferably a methyl,

[0061] - R6 represents a saturated or unsaturated hydrocarbon group, hydroxylated or not hydroxylated having from 1 to 19 carbon atoms, provided that the total number of carbon atoms in groups R5 and R6 does not exceed 20 and is preferably from 14 to 18.

[0062] Sophorolipids can be incorporated into the composition according to the present invention either in the form of the open-chain free acid, where R7 represents a hydrogen atom and R8 represents a hydroxy group OH, or in its lactone form, where a lactone ring is formed between R7 and R8, as indicated by formula (III): (HD

[0063] in which:

[0064] - R3, R4, R5 and R6 are as defined above,

[0065] provided that at least one of R3 and R4 represents an acetyl group.

[0066] 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.

[0067] Suitable fermentation processes are reviewed in AP Tulloch, JFT Spencer and PAJ Gorin, Can. J. Chem. (1962), 40, 1326, and U. Gobbert, S. Lang and F. Wagner, Biotechnology Letters (1984), 6 (4), 225. The resulting product is a mixture of various open-chain sophorolipids and sophorolipid lactones which can be used in mixtures, or the required form can be isolated.

[0068] It is possible to use, for example, the sophorolipid sold under the name Sopholiance S by Givaudan and the one sold under the name BioToLife by BASF. Trehalolipids

[0069] One or more glycolipids may be trehalolipids, which contain a trehalose fragment and may be represented by the general formula (IV): s oo s fO» V s OOÔH

[0070] in which:

[0071] - R9, RIO and RI1 individually represent a saturated hydrocarbon radical or unsaturated, hydroxylated or non-hydroxylated, having from 5 to 13 carbon atoms.

[0072] Trehalolipids can be produced by bacterial fermentation using the marine bacterium Arthrobacter sp. Ek 1 or the freshwater bacterium Rhodococcus erythropolis. Appropriate fermentation processes are proposed by Ishigami and al. (1987), J. Jpn. OU Chem. Soc., 36, 847-851, Schultz et al. (1991), Z. Naturforsch., 46C, 197-203, and Passer! et al. (1991), Z. Naturforsch., 46C, 204-209. Cellobiose lipids

[0073] One or more glycolipids may be cellobiose lipids, which contain a cellobiose fragment and may be represented by the general formula (V):

[0074] in which:

[0075] - RI represents a hydrogen atom or a cation,

[0076] - R12 represents a saturated or unsaturated hydrocarbon radical, hydroxylated or not hydroxylated, having from 9 to 15 carbon atoms, preferably 13 carbon atoms,

[0077] - R13 represents a hydrogen atom or an acetyl group;

[0078] - R14 represents a saturated or unsaturated hydrocarbon radical, hydroxylated or not hydroxylated, having from 4 to 16 carbon atoms.

[0079] Cellobiose lipids can be produced by fungal cells of the genus Ustilago. Suitable fermentation processes are proposed by Frautz, Lang and Wagner (1986), Biotech. Letts., 8, 757-762.

[0080] Rhamnolipids:

[0081] One or more glycolipids may be rhamnolipids.

[0082] The composition according to the invention preferably comprises one or more rhamnolipids.

[0083] Rhamnolipids are glycolipids produced by various bacterial species. They consist of one rhamnose fragment (mono-rhamnolipid) or two rhamnose fragments (di-rhamnolipid) linked by a glycosidic bond to one, two or three [3-hydroxylated] fatty acid chains linked together by an ester bond.

[0084] More specifically, these mono-rhamnolipids and di-rhamnolipids correspond to the following formula (VI):

[0085] in which:

[0086] - m denotes an integer equal to 2, 1 or 0,

[0087] - n denotes an integer equal to 1 or 0, and

[0088] - RI and R2 each independently represent hydrocarbon radicals identical or different having from 2 to 24 carbon atoms, preferably from 5 to 13 carbon atoms, which are branched or unbranched, substituted or unsubstituted, in particular hydroxy-substituted, saturated or unsaturated, preferably an alkyl radical simply, doubly or triply unsaturated.

[0089] Thus, when n is equal to 0, formula (VI) concerns mono-rhamnolipids and, when n is equal to 1, it concerns di-rhamnolipids.

[0090] The composition according to the invention preferably comprises at least one di-rhamnolipid.

[0091] The composition according to the invention preferably comprises at least one dirhamnolipid of formula (VI) in which:

[0092] - m denotes an integer equal to 2, 1 or 0;

[0093] - n denotes an integer equal to 1; and

[0094] - RI and R2 each independently represent hydrocarbon radicals identical or different, having from 2 to 24 carbon atoms, preferably from 5 to 13 carbon atoms, which are branched or unbranched, substituted or unsubstituted, in particular hydroxy-substituted, saturated or unsaturated, preferably an alkyl radical simply, doubly or triply unsaturated, as well as their salts, solvates and optical isomers.

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

[0096] In the context of the invention,

[0097] - the salts of di-rhamnolipids of formula (VI) are more particularly their salts carboxylate with an organic or inorganic cation and in particular with a cation chosen from sodium, potassium, calcium and ammonium.

[0098] - the solvated forms of di-rhamnolipids of formula (VI) are more particularly those solvated by one or more molecules of water or organic solvents, for example a hydrate or solvate of a linear or branched alcohol, such as ethanol or isopropanol, the optically active carbon atoms of fatty acids being preferably in the form of R enantiomers, and

[0099] - the term "alkyl" radical designates a saturated, linear aliphatic group or branched; for example, a C1-C20 alkyl group having a linear or branched hydrocarbon chain of 1 to 20 carbon atoms, more particularly a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl or eicosyl group.

[0100] The composition according to the invention preferably comprises at least one dirhamnolipid of formula (VI) in which:

[0101] - m denotes an integer equal to 2, 1 or 0;

[0102] - n denotes an integer equal to 1; and

[0103] - RI and R2, which are identical or different, are chosen from among the radicals pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl and radicals of formula -(CH2)oCH3, o denoting an integer from 1 to 23, in particular from 3 to 15 and more particularly from 4 to 12.

[0104] According to one embodiment of the invention, the composition according to the invention comprises at least one di-rhamnolipid of general formula (VI) in which m is equal to 1.

[0105] According to one embodiment of the invention, the composition according to the 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.

[0106] According to another embodiment of the invention, the composition according to the invention comprises a mixture comprising at least one mono-rhamnolipid.

[0107] More preferably, the composition according to the invention comprises at least one dirhamnolipid of the following formula (VII):

[0108] in which:

[0109] - m denotes an integer equal to 2, 1 or 0; preferably, m is equal to 1,

[0110] - n denotes an integer equal to 1,

[0111] - RI is a radical (CH2)p-CH3, where p is an integer ranging from 1 to 23, Preference for 4 to 12,

[0112] - R2 is a radical -(CH2)q-CH3, q being an integer ranging from 1 to 23, of Preference for 4 to 12,

[0113] and also their salts, their solvates and their optical isomers.

[0114] By way of illustration and without limiting the di-rhamnolipides of formula (VII) which may be suitable for the invention, particular mention may be made of the compounds of formula di-RL-CXCY, as defined in Table 1 below.

[0115] The formula di-RL-CXCY is a variant of writing to represent a di-rhamnolipid (di-RL) functionalized by two radicals RI and R2 respectively represented by the symbols CX and CY, the integers X and Y being respectively equal to p+4 and q+4.

[0116] [Table 1] Table 1 - di-rhamnolipids of formula (VII) Compounds DvRL-CXOY PQ 1 4 4 3 4 6 3 6 4 4 é g 5 6 S 6 OL-cncw S 6 * ■f oi-cncn SS ​​s 41RL-ŒC14 S lo „........................ ___ ............... ut 10 w H 10 12 _____ .......10 13 12 13

[0117] According to a preferred embodiment, the composition according to the invention comprises at least one di-rhamnolipid of formula (VII) in which p and q are identical and equal to 6 and m is equal to 1, also called di-RL-ClOCIO, or one of its salts, solvated and optical isomers.

[0118] 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 invention in a proportion of at least 50% by weight and preferably from 51% to 85% by weight, relative to the total weight of the rhamnolipids.

[0119] According to another embodiment, the composition according to the 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.

[0120] According to another embodiment, the composition according to the invention comprises at least one di-rhamnolipid of formula (VI) in which n and m are equal to 1, RI represents a radical -(CH2)oCH3, o being an integer ranging from 4 to 12, and R2 is selected from the pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl radicals; preferably, RI represents a radical -(CH2)6CH3 and R2 a nonenyl radical.

[0121] According to another preferred embodiment, the composition according to the invention comprises a mixture of at least two, in particular at least three, di-rhamnolipids of formula (VI) or formula (VII) selected from:

[0122] - a di-rhamnolipid of formula (VII) in which p and q are identical and equal to 6 and m is equal to 1;

[0123] - 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

[0124] - at least one di-rhamnolipid of formula (VI) in which n and m are equal to 1, RI represents a radical -(CH2)oCH3, o being an integer ranging from 4 to 12, and R2 is chosen from the pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl and tridecenyl radicals; preferably, RI represents a radical -(CH2)6CH3 and R2 a nonenyl radical.

[0125] Preferably, the composition according to the invention comprises a mixture of at least two, in particular at least three, di-rhamnolipids of formula (VI) or formula (VII) selected from:

[0126] - at least 50% by weight and preferably from 51% to 85% by weight of a di- rhamnolipide of formula (VII) in which p and q are identical and equal to 6 and m is equal to 1, with respect to the total weight of rhamnolipides.

[0127] - 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, with respect to the total weight of the rhamnolipids, and

[0128] - from 0.5 to 15% by weight, preferably from 3 to 12% by weight, preferably from 5 to 10% by weight of a dirhamnolipide of formula (VI) in which n and m are equal to 1, RI represents a radical -(CH2)6CH3 and R2 represents a nonenyl radical, relative to the total weight of the rhamnolipides.

[0129] As specified above, rhamnolipids are usually prepared by processes known to the person skilled in the art from bacterial producers, such as Pseudomonas.

[0130] Suitable fermentation processes are reviewed by D. Haferburg, R. Hommel, R. Claus and HP Kleber in Adv. Biochem. Ing. / Biotechnol. (1986), 33, 53-90, and by F. Wagner, H. Bock and A. Kretschmar in Fermentation (ed. RM Lafferty) (1981), 181-192, Springer Verlag, Vienna.

[0131] The rhamnolipide sold under the name Rheance One by Evonik (INCI name: glycolipids) can be used as a rhamnolipide.

[0132] In preferred embodiments, at least one glycolipid is selected from rhamnolipids, sophorolipids, or mixtures thereof.

[0133] The total concentration of the at least one amphoteric surfactant and the at least one glycolipid is approximately 10% to approximately 20% of the total weight of the composition. The weight ratio between the at least one amphoteric surfactant and the at least one glycolipid is approximately 0.4 to approximately 4. The at least one glycolipid may be present in the cosmetic cleansing composition in a range of approximately 3% to approximately 7%, relative to the weight of the cosmetic cleansing composition.

[0134] For example, at least one glycolipid may be present in the cosmetic cleansing composition as disclosed in a concentration of approximately 3% to approximately 7%, or approximately 3% to approximately 6%, or approximately 3% to approximately 5%, or approximately 3% to approximately 4%, or approximately 3% to approximately 7%, or approximately 4% to approximately 7%, or approximately 5% to approximately 7%, or approximately 6% to approximately 7%, or any appropriate combination, subcombination, range, or subrange of these values ​​by weight relative to the weight of the cosmetic cleansing composition. However, those skilled in the art will appreciate that other ranges fall within the scope of the invention.

[0135] Cationic Polymer:

[0136] In the various embodiments, the cosmetic cleansing composition comprises at least one cationic polymer selected from polymers of natural origin which are polysaccharides, and other natural (i.e. of plant, animal or bacterial origin), synthetic, or modified cationic polymers of natural or synthetic origin.

[0137] In some embodiments, the cationic polymer is a polymer of natural origin. In general, a cationic polymer of natural origin can be chosen from cationic forms and cationic derivatives of polysaccharides isolated from algae, polysaccharides produced by microorganisms and polysaccharides from higher plants, such as homogeneous polysaccharides.

[0138] In some embodiments, the naturally occurring cationic polymer selected from polysaccharides may be chosen from polysaccharides that include chitosan, chitin, starches, alginates, celluloses, galactomannans such as guar gums, in particular their cationic derivatives, and combinations thereof. In some embodiments, at least one naturally occurring cationic polymer selected from polysaccharides may be chosen from chitosan, chitosan derivatives, chitin, starch, starch derivatives, cellulose (for example, but not limited to, ethylcellulose, nitrocellulose, hemicellulose and hemicellulose derivatives), alginates, including, but not limited to, sodium alginate, and combinations thereof.

[0139] In some embodiments, the cationic polymer is a naturally occurring cationic polymer selected from: chitosan, chitosan oligosaccharide, polymeric chitosan having a molecular weight in the range of 1 kDa to about 1000 kDa, chitosan derivatives, chitosan derivatives having enhanced solubility, cyclodextrin, cationic gelatin, cationic dextran, cationic cellulose, polylysine, polyornithine, histone, collagen, chitosan-cysteine, chitosan-thiobutylamidine, chitosan-thioglycolic acid, or combinations thereof. In preferred embodiments, the cationic polymer is selected from chitosan, polylysine, or combinations thereof.

[0140] Examples of cationic polymers include polysaccharide-based delivery molecules (e.g., chitosan, cyclodextrin, cationic gelatin, cationic dextran, cationic cellulose), cationic peptides and their derivatives (e.g., polylysine, polyornithine), peptide / protein polymers (e.g., histone, collagen), linear or branched synthetic polymers (e.g., polybrene, polyethyleneimine), natural polymers (e.g., histone, collagen), synthetic dendrimers, thiolated cationic biopolymers (naturally occurring thiomers or naturally occurring dendrimers, e.g., chitosan-cysteine, chitosan-thiobutbutylamidine and chitosan-thiogly colic acid).

[0141] Examples of naturally occurring cationic polymers include polysaccharide-based delivery molecules (e.g., chitosan, cyclodextrin, cationic gelatin, cationic dextran, cationic cellulose); cationic peptides and their derivatives (e.g., polylysine, polyornithine); peptide / protein polymers (e.g., histone, collagen); thiolated cationic biopolymers (naturally occurring thiomers or naturally occurring dendrimers, e.g., chitosan-cysteine, chitosan-thiobutylamidine, chitosan-thioglycolic acid); or combinations thereof.

[0142] In some embodiments, the cosmetic cleansing composition comprises at least one cationic chitosan of natural origin selected from chitosan oligosaccharide, chitosan (or polymeric chitosan having a molecular weight (MW) in a range of about 1 kDa to about 1000 kDa), chitosan derivatives, including derivatives having enhanced solubility, or combinations thereof.

[0143] In various embodiments, chitosan has a molecular weight (MW) in the range of about 1 kDa to about 1000 kDa. In some particular embodiments, chitosan has a "low" MW, in the range of about 1 kDa to about 20 kDa, or about 10 kDa to about 20 kDa, or about 12 kDa to about 18 kDa. In some embodiments, chitosan has an MW of approximately 27 kDa.

[0144] According to the present invention, the cationic polymer can be selected from polylysines. A single type of polylysine can be used, or two or more different types of polylysine can be used in combination.

[0145] Polylysines are formed by the condensation of several amino acids of lysine. Polylysine can be a natural homopolymer of L-lysine, which can be produced by bacterial fermentation. Polylysines are typically used as a natural preservative in food products. Polylysine is a polyelectrolyte that is soluble in polar solvents such as water.

[0146] Polylysine can be, for example, an epsilon-polylysine (or designated as "e-polylysine"), which is a condensation of amino groups at the e position and of groups Lysine carboxyl group, or alpha-polylysine (also known as "a-polylysine"), is a condensation of amino groups in the α position and carboxyl groups of lysines. Polylysine is commercially available in various forms, such as poly D-lysine and poly L-lysine. Polylysine is generally a condensate of L-lysines, that is, poly L-lysine.

[0147] Examples of polylysine include:

[0148] - Epsilon-poly-L-lysine from JNC CORPORATION, which is a 25% solution of Epsilon-poly-L-lysine having a weight average molecular weight of approximately 4700 in aqueous solution.

[0149] Polylysine can be in the form of organic or inorganic salts. Salts added with an acid include, for example, salts of hydrochloric or hydrobromic acid, sulfuric acid, citric acid, succinic acid, tartaric acid, lactic acid, para-toluenesulfonic acid, phosphoric acid, or acetic acid; or salts of fatty acids, such as linoleic acid, oleic acid, palmitic acid, stearic acid, behenic acid, and 18-methylicosanoic acid. Salts added with a base include, for example, a sodium salt, a calcium salt, or a hydroxyalkylamine salt, for example, of N-methylglucamine, aminopropanediol, or triethanolamine.

[0150] In some preferred embodiments of the present invention, the polylysine of the present invention is present as a single molecule in the composition, or is not covalently bonded to other compounds. In one embodiment of the present invention, the polylysine is not covalently bonded to dye compounds. In another embodiment of the present invention, the polylysine is not covalently bonded to polyorganosiloxane compounds. The term "polyorganosiloxane" is well known in the art to designate compounds having a Si-O main chain and organic functional groups attached to the main chain.

[0151] In another embodiment of the present invention, the polylysine is in free form. The term "free form" here indicates that the polylysine is not covalently bonded to other compounds.

[0152] At least one naturally derived cationic polymer is present in the cosmetic cleansing composition, according to disclosure, at a concentration of approximately 0.05% to approximately 2%, or approximately 0.05% to approximately 1%, or approximately 0.05% to approximately 1%, or approximately 0.1% to approximately 0.5%, or approximately 0.1% to approximately 0.2%, or any appropriate combination, subcombination, range, or subrange of these values ​​by weight relative to the weight of the cosmetic cleansing composition. However, those skilled in the art will appreciate that other ranges fall within the scope of the invention.

[0153] Thus, a polymer or a combination of polymers may be present, by weight, on the basis of the total weight of the cosmetic cleansing composition, from about 0.05, 0.06, 0.07, 0.08, 0.90, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 to about 2 percent by weight, including intermediate increments and ranges.

[0154] In other embodiments, the naturally occurring cationic polymer selected from polysaccharides may be selected from one or more of the following: methylcelluloses, hydroxyalkylcelluloses, ethylhydroxyethylcelluloses and carboxymethylcelluloses, mannans, xylans, lignins, arabans, galacturonans, alginate-based compounds, chitin, glucuronoxylans, arabinoxylans, xyloglucans, glucomannans, fructans such as inulin, pectic acids and pectins, arabinogalactans, agars, glycosaminoglycans, gum arabic, tragacanth gum, ghatti gum, karaya gum, locust bean gum, microbial biopolysaccharide gums such as scleroglucan or xanthan gum, mucopolysaccharides, chondroitin sulfates, and mixtures thereof.

[0155] In some embodiments, the cationic polymer is not a polymer of natural origin and may be chosen from synthetic polymers. In some examples, the synthetic polymers are not silicone-based, and in some embodiments may be chosen from the group consisting of polyquaterniums, i.e. polymers having quaternary ammonium centers in the polymer, for example, including polyquaternium-47 (1-Propanaminium, N,N,N-trimethyl-3-[(2-methyl-l-oxo-2-propenyl)amino]-, chloride, polymer with methyl 2-propenoate and 2-propenoic acid). Other non-limiting examples of these polyquaternium compounds may be chosen from the diallyldimethylammonium chloride / acrylic acid copolymers sold under the names MERQUAT 280 POLYMER or MERQUAT 280NP POLYMER or MERQUAT 281 POLYMER or MERQUAT 295 POLYMER, by the company Nalco (Lubrizol) (INCI name: Polyquaternium-22);the copolymer of methacrylamidopropyltrimonium chloride, acrylic acid or methyl acrylate, sold under the name MERQUAT 2001 POLYMER OR MERQUAT 2001 N POLYMER by the company Nalco (Lubrizol) (INCI name: Polyquatemium-47); the terpolymer of acrylamide / dimethyldiallylammonium chloride / acrylic acid sold under the name MERQUAT 3330DRY POLYMER or MERQUAT 3330PR POLYMER or MERQUAT 3331 PR POLYMER or MERQUAT 3940 POLYMER or MERQUAT PLUS 3330 POLYMER OR MERQUAT PLUS 3331 POLYMER by the company Nalco (Lubrizol) (INCI name: Polyquaternium-39); an ampholytic terpolymer consisting of methacrylamidopropyltrimethylammonium chloride (MAPTAC), acrylamide and acrylic acid, sold under the name MERQUAT 2003PR POLYMER by the company Nalco (Lubrizol) (INCI name: Polyquaternium-53); Polyquaternium-30, Polyquaternium-35, ; Polyquaternium-45, Polyquaternium-50, Polyquaternium-54, Polyquaternium-57, Polyquaternium-63, Polyquaternium-74, Polyquaternium-76, Polyquaternium-86, Polyquaternium-89, Polyquaternium-95, Polyquaternium-98, Polyquaternium-104, Polyquaternium-111, Polyquaternium-112, and mixtures thereof. In some embodiments, the cationic polymer is a synthetic polymer selected from among cationic acrylic polymers, for example, an amorphous functional acrylic polymer grafted onto a polyethylene backbone such as SYNTRAN™ 5330, which is a quaternary-modified olefin grafted technology. More generally, these synthetic polymers are chosen from, but not limited to, cationic polymers including polyacrylates such as those identified in the International Cosmetic Ingredient Dictionary and Handbook (9th ed.2002) such as, for example, polyacrylate-1, polyacrylate-2, polyacrylate-3, polyacrylate-4, polyacrylate-16, polyacrylate-17, polyacrylate-18, polyacrylate-19, polyacrylate-21, and mixtures thereof. Such (co)polymers, or similar (co)polymers, may be combined individually or with other (co)polymers to form suitable bimodal agents having both cationic and anionic functionalities.

[0156] In the various embodiments, the amount of cationic polymer that is not a polymer of natural origin and is selected from synthetic cationic polymers that may be present in the cosmetic cleansing composition may range from about 0.05% to about 2%, or from about 0.05% to about 1%, or from about 0.05% to about 1%, or from about 0.1% to about 0.5%, or from about 0.1% to about 0.2%, or any combination, sub-combination, range or sub-range of these values ​​by weight, relative to the total weight of the cosmetic cleansing composition.

[0157] Thus, any one of the at least one synthetic cationic polymer, if any, is present, by weight, on the basis of the total weight of the cosmetic cleansing composition, from about 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, to about 2% by weight, including intermediate increments and ranges.

[0158] In the various embodiments, the quantity of each of the at least one cationic polymer, which may be a cationic polymer of natural or synthetic origin, alone or in combination with another cationic polymer, present in the cosmetic cleansing compositions may range from approximately 0.05% to approximately 2%, or from approximately 0.05% to approximately 1%, or from approximately 0.05% to approximately 1%, or from approximately 0.1% to approximately 0.5%, or from approximately 0.1% to approximately 0.2%, or any appropriate combination, sub-combination, range, or sub-range of these values ​​by weight, relative to the weight of the cosmetic cleansing composition. However, those skilled in the art will appreciate that other ranges fall within the scope of the invention.

[0159] In preferred embodiments according to the invention, the cationic polymer is chosen from cationic polymers of natural origin.

[0160] The compositions according to the disclosure contain at least one cosmetically acceptable solvent. In various embodiments, the cosmetically acceptable solvent may be selected from water.

[0161] The cosmetic cleansing compositions according to the disclosure are essentially free of phenoxyethanol.

[0162] In various embodiments, the compositions have a pH of about 4 to about 8. For example, the pH of the compositions can range from about 4.5 to about 7.5, including all intermediate ranges and sub-ranges. Mineral particles

[0163] In the various embodiments, the coacervat cleaning system comprises at least one mineral particle selected from mineral pigments or mineral UV filters. Mineral pigments

[0164] The term “mineral pigment” is intended to designate any pigment that meets the definition in Ullmann’s Encyclopedia in the chapter on inorganic pigments. Mineral pigments useful in the present invention include zirconium oxide, cerium oxide, zinc oxide, chromium oxide, titanium dioxide, and metallic powders, for example, aluminum powder and copper powder. The following mineral pigments may also be used: Ta2O5, Ti3O5, Ti2O3, TiO, and ZrO2 in mixtures with TiO2, ZrO2, Nb2O5, CeO2, and ZnS.

[0165] In the context of the present invention, the mineral pigments are more particularly iron oxide and / or titanium dioxide.

[0166] In some embodiments, one or more pigments comprise pigment-grade titanium dioxide. "Pigment-grade" titanium dioxide generally has a larger particle size than UV-grade titanium dioxide—typically having average particle sizes of 400 nm or more, including 500 nm or more and / or 600 nm or more.

[0167] In certain particular embodiments, the quantity of at least one mineral pigment is present from approximately 1% to approximately 10% by weight, based on the total weight of the composition. The total quantity of mineral pigments in the compositions may vary but is typically approximately 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10% by weight, relative to the total weight of the composition. Mineral UV filters

[0168] In various embodiments, the composition comprises one or a combination of mineral UV filters. The mineral UV filter used for this disclosure may be active in the UV-A and / or UV-B region. The mineral UV filter may be hydrophilic and / or lipophilic.

[0169] In some preferred embodiments, the mineral UV filter is in the form of a fine particle such that its average (primary) particle diameter ranges from 1 nm to 150 nm, and in some embodiments from 5 nm to 40 nm, and in some embodiments from 10 nm to 30 nm. The average (primary) particle size or average (primary) particle diameter here is an arithmetic mean diameter. In some embodiments, a particle may have a diameter that has an average particle size of approximately or less than approximately 1 micron, or approximately or less than approximately 200 nm, or approximately or less than approximately 100 nm (sometimes called the nanoscale).It will be understood by those skilled in the art that a particle which is referred to as nanoscale for the purposes of cosmetic applications according to this disclosure will have an average particle size of less than about 100 nm unless specifically stated otherwise, e.g. as in the case of nano-zinc oxide which is sometimes referred to as nanoscale although the UV agent has an average primary particle size of less than 200 nm.

[0170] In certain particular embodiments, the quantity of at least one mineral UV filter is present from approximately 1% to approximately 10% by weight, relative to the total weight of the composition. The total quantity of mineral UV filtering agents in the compositions may vary but is typically approximately 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10% by weight, relative to the total weight of the composition.

[0171] The mineral UV filter can be selected from the group consisting of metal oxides, which may or may not be coated. And in some embodiments, the mineral UV filters are selected from pigments formed of metal oxides, such as, for example, pigments formed of titanium dioxide (amorphous or crystalline in the form of rutile and / or anatase), iron oxide, zinc oxide, zirconium oxide, or cerium oxide, which are all well-known anti-UV photoprotective agents in themselves.

[0172] The mineral UV filter may be coated or uncoated, and said coated mineral UV filter may have one or more coatings. The coating may comprise one or more compounds selected from the group consisting of alumina, silica, aluminum hydroxide, silicones, silanes, fatty acids or their salts (such as sodium, potassium, zinc, iron, or aluminum salts), fatty alcohols, lecithin, amino acids, polysaccharides, proteins, alkanolamines, waxes such as beeswax, (meth)acrylic polymers, organic UV filters, and (per)fluorinated compounds. In some embodiments, it is desirable that the coating include one or a combination of organic UV filters.

[0173] Of course, mineral UV filters made of metal oxides may, before their treatment with silicones, have been treated with other surfacing agents, in particular with cerium oxide, alumina, silica, aluminum compounds, silicon compounds or mixtures thereof. The coated mineral UV filter may have been prepared by subjecting the mineral UV filter to one or more surface treatments of a chemical, electronic, mechanochemical and / or mechanical nature with any of the compounds described above, as well as polyethylenes, metal alkoxides (titanium or aluminum alkoxides), metal oxides, sodium hexametaphosphate, and those presented, for example, in Cosmetics & Toiletries, February 1990, Vol. 105, pp. 53-64.

[0174] The coated mineral UV filter can be coated with titanium oxides: with silica, such as the product "Sunveil" from Ikeda, and "Sunsil TIN 50" from Sunjin Chemical; with silica and with iron oxide, such as the product "Sunveil F" from Ikeda; with silica and with alumina, such as the products "Microtitanium Dioxide MT 500 SA" from Tayca, "Tioveil" from Tioxide, and "Mirasun TiW 60" from Rhodia; with alumina, such as the products "Tipaque TTO-55 (B)" and "Tipaque TTO-55 (A)" from Ishihara, and "UV 14 / 4" from Kemira; with alumina and with aluminum stearate, such as the product "Microtitanium Dioxide MT 100 T, MT 100 TX, MT 100 Z or MT-01" from Tayca, the products "Solaveil CT-10 W" and "Solaveil CT 100" from Uniqema, and the product "Eusolex T-AVO" from Merck; with alumina and with aluminum laurate, such as the product "Microtitanium Dioxide MT 100 S" from Tayca;with iron oxide and with iron stearate, such as the product "Microtitanium Dioxide MT 100 F" from Tayca; with zinc oxide and with zinc stearate, such as the product "BR351" from Tayca; with silica and with alumina and treated with a silicone, such as the products "Microtitanium Dioxide MT 600 SAS", "Microtitanium Dioxide MT 500 SAS", and "Microtitanium Dioxide MT 100 SAS" from Tayca; with silica, with alumina and with aluminum stearate and treated with a silicone, such as the product "STT-30-DS" from Titan Kogyo; with silica and treated with a silicone, such as the product "UV-Titan X 195" from Kemira; with alumina and treated with silicone, such as Ishihara's "Tipaque TTO-55 (S)" or Kemira's "UV Titan M 262"; with triethanolamine, such as Titan Kogyo's "STT-65-S"; with stearic acid, such as Ishihara's "Tipaque TTO-55 (C)";or with sodium hexametaphosphate, such as Tayca's "Micro titanium Dioxide MT 150 W". Other titanium oxide pigments treated with silicone include, in some embodiments, TiO2 treated with octyltrimethylsilane and having an average individual particle size of 25 and 40 nm, such as that marketed under the brand name "T 805" by Degussa Silices, TiO2 treated with polydimethylsiloxane and having an average individual particle size of 21 nm, such as that marketed under the brand name "70250 Cardre UF TiO2Si3" by Cardre, and TiO2 anatase / rutile treated with polydimethylhydrosiloxane and; for which the average size of individual particles is 25 nm, such as that marketed under the brand name "Microtitanium Dioxide USP carbonate Hydrophobe" by Color Techniques.

[0175] And in certain embodiments, the following coated TiO2s can be used as coated mineral UV filters: Stearic acid (and) Aluminium hydroxide (and) TiO2, such as Tayca's "MT-100 TV" product, with an average primary particle diameter of 15 nm; Dimethicone (and) Stearic acid (and) Aluminium hydroxide (and) TiO2, such as Miyoshi Kasei's "S A-TTO-S4" product, with an average primary particle diameter of 15 nm; Silica (and) TiO2, such as Tayca's "MT-100 WP" product, with an average primary particle diameter of 15 nm; Dimethicone (and) Silica (and) Aluminium Hydroxide (and) TiO2, such as the product "MT-Y02" and "MT-Y-110 M3S" from Tayca, with an average primary particle diameter of 10 nm; Dimethicone (and) Aluminium Hydroxide (and) TiO2, such as the product "SA-TTO-S3" from Miyoshi Kasei, with an average primary particle diameter of 15 nm;Dimethicone (and) Alumina (and) TiO2, such as the product "UV TITAN Ml 70" from Sachtleben, with an average primary particle diameter of 15 nm; and silica (and) aluminum hydroxide (and) alginic acid (and) TiO2, such as the product "MT 100 AQ" from Tayca, with an average primary particle diameter of 15 nm. In terms of UV filtering capacity, TiO2 coated with one or a combination of organic UV filters is more desirable. For example, avobenzone (and) stearic acid (and) aluminum hydroxide (and) TiO2, such as the product "HXMT-100ZA" from Tayca, with an average primary particle diameter of 15 nm, can be used.

[0176] Uncoated titanium dioxide pigments are, for example, marketed by Tayca under the brand names "Microtitanium Dioxide MT500B" or "Microtitanium Dioxide MT600B", by Degussa under the brand name "P 25", by Wacker under the brand name "Transparent Titanium Oxide PW", by Miyoshi Kasei under the brand name "UFTR", by Tomen under the brand name "ITS", and by Tioxide under the brand name "Tioveil AQ". Uncoated zinc oxide pigments are, for example: those marketed under the brand name "Z-cote" by Sunsmart; those marketed under the brand name "Nanox" by Elementis; and those marketed under the brand name "Nanogard WCD 2025" by Nanophase Technologies.Examples of coated zinc oxide pigments include those marketed under the brand name "Zinc Oxide CS-5" by Toshiba (ZnO coated with polymethylhydrosiloxane); those marketed under the brand name "Nanogard Zinc Oxide FN" by Nanophase Technologies (as a 40% dispersion in Finsolv TN, C12-C15 alkyl benzoate); and those marketed under the brand names "Daitopersion Zn-30" and "Daitopersion Zn-50" by Daito (dispersions in oxyethylenated polydimethylsiloxane / cyclopolymethylsiloxane comprising 30. % or 50% of zinc nanooxides coated with silica and polymethylhydrosiloxane); those marketed under the brand name "NFD Ultrafine ZnO" by Daikin (ZnO coated with perfluoroalkyl phosphate and a perfluoroalkylethyl copolymer in dispersion form in cyclopentasiloxane); those marketed under the brand name "SPD-Z1" by Shin-Etsu (ZnO coated with a silicone-grafted acrylic polymer dispersed in cyclodimethylsiloxane); those marketed under the brand name "Escalol Z100" by ISP (alumina-treated ZnO dispersed in a copolymer mixture of ethylhexyl methoxycinnamate / PVP-hexadecene / methicone); those marketed under the brand name "Fuji ZnO-SMS-10" by Fuji Pigment (ZnO coated with silica and polymethylsilsesquioxane); and those marketed under the brand name "Nanox Gel TN" by Elementis (ZnO dispersed at 55% in C12-C15 alkyl benzoate with hydroxystearic acid polycondensate).Uncoated cerium oxide pigments are marketed, for example, under the brand name "Colloidal Cerium Oxide" by Rhone-Poulenc.

[0177] Uncoated iron oxide pigments are, for example, marketed by Arnaud under the brands "Nanogard WCD 2002 (FE 45B)", "Nanogard Iron FE 45 BL AQ", "Nanogard FE 45R AQ" and "Nanogard WCD 2006 (FE 45R)", or by Mitsubishi under the brand "TY-220". Coated iron oxide pigments are, for example, marketed by Arnaud under the brands "Nanogard WCD 2008 (FE 45B FN)", "Nanogard WCD 2009 (FE 45B 556)", "Nanogard FE 45 BL 345" and "Nanogard FE 45 BL" or by BASF under the brand "Transparent Iron Oxide". Terms and definitions

[0178] As used herein, the expression "bleaching efficacy" is defined as the difference in color between untreated skin and skin cleansed with the described coacervate cleansing system.

[0179] As used herein, the expressions "and their mixtures", "and one of their mixtures", "and their combinations", "and one of their combinations", "or their mixtures", "or one of their mixtures", "or their combinations", and "or one of their combinations" are used interchangeably to indicate that the list of components immediately preceding the expression, such as "A, B, C, D, or their mixtures", means that the component(s) may be chosen from A, B, C, D, from A + B, from A + B + C, from A + D, from A + C + D, etc., without limitation as to their variations. Thus, the components may be used individually or in any of their combinations.

[0180] The transitional terms "comprising", "consisting essentially of" and "consisting of", when used in the appended claims, in their original and amended form, define the scope of the claims with respect to the additional elements or steps of claims not mentioned, the case which, if applicable, are excluded from the scope of the claim(s). As used herein, the terms "comprising," "having," and "including" (or "comprise," "have," and "include") are used in their open, non-limiting sense. The term "comprising" is intended to be inclusive or broad and does not exclude any additional element, process, step, or material not mentioned. The expression "consisting of" excludes any element, step, or material other than those specified in the claim and, in the latter case, impurities ordinarily associated with the specified material or materials. The expression "consisting essentially of" limits the scope of a claim to the specified elements, steps, or material(s) and to those that do not materially affect the fundamental and novel feature(s) of the claimed invention.All the processes and materials described herein that incorporate the present invention can, in variant embodiments, be defined more specifically by any one of the transitional expressions "comprising", "consisting essentially of" and "consisting of".

[0181] For the purposes of this disclosure, it should be noted that, for the sake of brevity, some of the quantitative expressions given herein are not qualified by the term "approximately." It is understood that, whether or not the term "approximately" is used explicitly, each quantity given herein is intended to refer to the actual value given, and is also intended to refer to the approximation of that value that would be reasonably deduced by a person skilled in the art, including approximations due to the experimental and / or measurement conditions for that value. All ranges and quantities indicated herein are intended to include subranges and quantities using any disclosed point as a bound. All figures, quantities, ranges, etc., are intended to be modified by the term "approximately," whether or not it is expressly referred to.Similarly, a given range of "approximately 3% to 7%" is understood to have its 3% and 7% bounds modified by the term "approximately." The term "approximately" is used in this document to indicate a difference of up to + / - 10% from the stated number, such as + / - 9%, + / - 8%, + / - 7%, + / - 6%, + / - 5%, + / - 4%, + / - 3%, + / - 2%, or + / - 1%. Likewise, all range bounds are understood to be disclosed individually, such that, for example, a range of 1:2 to 2:1 is understood to disclose a ratio of 1:2 and 2:1.

[0182] The "active substance", as used here in relation to the percentage of an ingredient or raw material, refers to 100% of the activity of the ingredient or raw material.

[0183] All quantities indicated here are relative to the quantity of active material, unless otherwise stated.

[0184] All percentages, parts and ratios herein are based on the total weight of the compositions in this disclosure, unless otherwise stated.

[0185] As used herein, the term "surfactants", as well as any specifically identified surfactant, includes salts of surfactants, even if not explicitly stated.

[0186] As used herein, the term "synthetic" refers to a material that is not of natural origin. The term "natural" and the expressions "of natural source" and "of natural origin" refer to a material of natural origin, such as derived from plants, which also cannot be subsequently altered chemically or physically. "Of plant origin" means that the material comes from a plant.

[0187] Unless expressly stated otherwise, no process described herein is intended to be interpreted as requiring that its steps be performed in a specific order. Accordingly, where a process claim does not expressly state an order to be followed by its steps, or where it is not specifically stated in the claims or descriptions that the steps must be limited to a specific order, no particular order is to be inferred therefrom.

[0188] As used herein, the expressions "substantially free" or "essentially free" mean that the specific material may be present in small amounts that do not materially affect the basic and innovative characteristics of the compositions as disclosed. For example, there may be less than 2% by weight of a specific material added to a composition, based on the total weight of the compositions (provided that an amount less than 2% by weight does not materially affect the basic and innovative characteristics of the compositions as disclosed). Similarly, the compositions may include less than 2%, less than 1.5%, less than 1%, less than 0.5%, less than 0.1%, less than 0.05%, or less than 0.01%, or no amount of the specified material.All components positively presented in this disclosure may be negatively excluded from the claims; for example, a claimed composition may be "free," "substantially free" (or "significantly free") of one or more components that are positively presented in this disclosure. The expression "substantially free" or "substantially free" as used here may also mean that the specific material is not added to the composition, but that it may still be present in a raw material included in the composition. EXAMPLES

[0189] The following examples are intended to be non-limiting and explanatory only. In the Examples, unless otherwise indicated, quantities are expressed percentage by weight (% by weight) of active ingredients, relative to the total weight of the composition. Example 1# - Examples of coacervate

[0190] In order to demonstrate the coacervate phenomenon according to the disclosure, the following compositions A to D were prepared.

[0191] [Table 2] Table 2 - Examples of coacervate systems INCI Name Coacervate Composition ABCD Cocamidopropyl Hydroxysultaine 5% 5% 5% Coco Betaine 5% Rhamnolipid (Rhamnolipid) 4% 4% Sophorolipid (Sophorolilipid) 4% 4% Chitosan 0.1% 0.1% Polylysine 0.2% 0.1% Water 90.8% 90.9% 90.9% 90.9% pH 6.2 5.2 5.2 4.85 Phase Behavior after Dilution 1Ox cloudy cloudy cloudy cloudy

[0192] Each of the compositions (A to D) was clear upon initial preparation, as shown in [Fig. 1]. After a 10-fold dilution with water, the compositions appeared cloudy, as shown in [Fig. 2]. Each of the compositions A to D demonstrated the coacervate phenomenon by undergoing the phase transition during dilution with water.

[0193] Example 2 - Coacervate system with Sophorolipid

[0194] In order to demonstrate the coacervate phenomenon using sophorolide, the following compositions (3 to 7) and comparative compositions (1, 2, 8 and 9) were prepared.

[0195] [Table 3] Table 3 - Compositions with cocamidopropyl hydroxysultaine, sophorolipid and chitosan - Behavior after dilution Sample % A % B % of Chitosan Water pH Phase behavior after Dilution 2 to 100% 1% 9% 0.1% 89.9% 4.5-6.5 Solution not clear 2% 2% 8% 0.1% 89.9% 4.5-6.5 Solution not clear 3% 3% 7% 0.1% 89.9% 4.5-6.5 Cloudy / precipitates when diluted 4% 4% 6% 0.1% 89.9% 4.5-6.5 Cloudy / precipitates when diluted 5% 5% 0.1% 89.9% 4.5-6.5 Cloudy / precipitates when diluted 6% 4% 0.1% 89.9% 4.5-6.5 Cloudy / precipitates when diluted 7% 7% 3% 0.1% 89.9% 4.5-6.5 Cloudy / precipitates when diluted 8 8% 2% 0.1% 89.9% 4.5-6.5 No coacervate 9 9% 1% 0.1% 89.9% 4.5-6.5 No coacervate

[0196] A = cocamidopropyl hydroxysultaine; B = sophorolipid

[0197] Compositions 1 to 9 were prepared and then diluted 10 times with water. Samples 3 to 7 exhibited the coacervat phenomenon and became cloudy after dilution with water. Samples 1, 2, 8, and 9 did not exhibit coacervat and did not become cloudy after dilution. Samples with sophorolipid concentrations between 3 and 7% and cocamidopropyl hydroxysultaine concentrations between 3 and 7% exhibited coacervat.

[0198] Example 3 - Coacervate system with rhamnolipid

[0199] In order to demonstrate that the coacervate phenomenon could be obtained over a range of concentrations, the following compositions containing varying amounts of cocamidopropyl hydroxysultaine, rhamnolipid and polylysine were prepared.

[0200] [Table 4] Table 4 - Compositions with Cocamidopropyl Hydroxysultaine, Rhamnolipid and Polylysine - Behavior after dilution Sample % A % C % Polylysine Water pH Phase behavior 10 1% 9% 0.1% 89.9% 4.5-7.5 No coacervate 11 2% 8% 0.1% 89.9% 4.5-7.5 No coacervate 12 3% 7% 0.1% 89.9% 4.5-7.5 Cloudy / precipitates when diluted 13 4% 6% 0.1% 89.9% 4.5-7.5 Cloudy / precipitates when diluted 14 5% 5% 0.1% 89.9% 4.5-7.5 Cloudy / precipitates when diluted 15 6% 4% 0.1% 89.9% 4.5-7.5 Cloudy / precipitates when diluted 16 7% 3% 0.1% 89.9% 4.5-7.5 Cloudy / precipitates when diluted 17 8% 2% 0.1% 89.9% 4.5-7.5 Cloudy / precipitates when diluted 18 9% 1% 0.1% 89.9% 4.5-7.5 No coacervate

[0201] A = Cocamidopropyl hydroxysultaine; C = Rhamnolipid

[0202] Compositions 10 to 18 were prepared and then diluted 10 times with water. Samples 12 to 17 exhibited the coacervat phenomenon and became cloudy after dilution with water. Samples 10, 11, and 18 did not exhibit coacervat and did not become cloudy after dilution. Samples with rhamnolipid concentrations between 2 and 7% and cocamidopropyl hydroxysultaine concentrations between 3 and 8% exhibited coacervat.

[0203] Example 4 - Examples of comparative systems with mineral particles

[0204] In order to demonstrate the deposition of mineral particles according to the disclosure, the inventive coacervate composition (19) and the following comparative non-coacervate compositions (20 and 21) were prepared.

[0205] [Table 5] Table 5 - Inventive and comparative formulations INCI Name 19 - Inventive Formula 20 - Comparative Formula 21 - Comparative Formula Cocamidopropyl Hydroxysultaine 5% 5% Rhamnolipid 4% 4% Titanium Dioxide 2.5% 2.5% 2.5% Polylysine 0.1% Water 88.4% 88.5% 47.6% Other Surfactants 22% Active ingredients 6.2% Perfume (Fragrance) 0.9% Polymers 12.1% Preservatives 0.7% Other solvents 8% pH 5.2 5.2 8.6 Example 5# - Whitening Efficiency

[0206] To demonstrate the deposit of TiO2 remaining after washing, samples 19 to 21 were prepared. 0.2 g of each sample was placed on a black substrate and spread evenly over a 1-inch area, as shown in [Fig. 3]. The samples were then rinsed with water and examined for TiO2 residues as Figures 4 to 6 show this. The bleaching efficiency was measured for each sample, and the results are shown in Table 6 below.

[0207] The method for determining bleaching efficiency was measured by Datacolor 600.

[0208] Reference: substrate completely clean, with no cleaner applied.

[0209] Sample before rinsing: substrate with cleaner applied, and before disposal.

[0210] Sample after rinsing: substrate with cleaner applied, and after removal.

[0211] The equation below was used to calculate the bleaching efficiency.

[0212] laundering efficiency = after rinse^^reference before rinse^^referencecf:

[0213] Referring to Table 5, the coacervate composition (19) was tested and compared to the non-coacervate compositions (20 and 21). The results are shown below in Table 6.

[0214] [Table 6] Table 6 - Bleaching efficiency Formula Whitening Efficacy % 19 64.7% 20 6.8% 21 3.5%

[0215] The coacervat composition (19) left a visible layer of TiO2 as shown in [Fig. 4], and had the highest bleaching efficiency of 64.7%. The coacervat composition (19) showed a much higher bleaching efficiency compared to the non-coacervat compositions (20 and 21) shown in Figures 5 and 6. The coacervat composition (19) showed an increase in TiO2 deposition compared to the non-coacervat compositions (20 and 21).

Claims

Demands

1. A coacervate cleansing system comprising: (a) at least one amphoteric surfactant; (b) at least one glycolipid; (c) at least one cationic polymer in a concentration of 0.05% to 2%; and (d) at least one mineral particle; and (e) at least one cosmetically acceptable solvent; wherein the cleansing system is substantially free of phenoxyethanol and wherein the pH of the composition is between 4 and 8, and wherein the weight ratio of a and b is 0.4 to 4, and wherein the total concentration of a and b combined is 10 to 20% of the total weight of the composition.

2. Composition according to claim 1, wherein at least one amphoteric surfactant is selected from cocamidopropyl hydroxysultaine, cocamidopropyl betaine, coco betaine, sodium lauroamphoacetate, disodium cocoamphodiacetate or a mixture thereof.

3. Composition according to claim 1, wherein at least one glycolipid is selected from rhamnolipids, sophorolipids, glucolipids, trehalolipids, cellobiose lipids, mannosylerythritol lipid, or a mixture thereof.

4. Composition according to claim 1, wherein at least one cationic polymer is selected from chitosan, chitosan oligosaccharide, chitin, cyclodextrin, cationic gelatin, cationic dextran, cationic cellulose, polylysine, polyomithine, histone, collagen, chitosan-cysteine, chitosan-thiobutylamidine, chitosan-thioglycolic acid, or a mixture thereof.

5. Composition according to claim 1, wherein at least one mineral particle is selected from titanium dioxide, zinc oxide and mixtures thereof.

6. Composition according to claim 1, wherein at least one cationic polymer is preferably selected from a polymer of natural origin.

7. Composition according to claim 2, wherein at least one amphoteric surfactant is selected from cocamidopropyl hydroxysultaine, coco betaine, or a mixture thereof.

8. Composition according to claim 3, wherein at least one glycolipid is selected from sophorolipid, rhamnolipid, or a mixture thereof.

9. Composition according to claim 4, wherein at least one cationic polymer is selected from chitosan, polylysine, or a mixture thereof.

10. A method for deposition of at least one mineral particle on the skin during cleansing comprising (i) applying to the skin of a subject a coacervate cleansing system, comprising: (a) at least one amphoteric surfactant; (b) at least one glycolipid; (c) at least one cationic polymer at a concentration of 0.05% to 2%; (d) at least one mineral particle; and (e) at least one cosmetically acceptable solvent in which the cleansing system is substantially free of phenoxyethanol, and in which the pH of the composition is between 4 and 8, and in which the weight ratio of a and b is 0.4 to 4, and in which the total concentration of a and b combined is 10% to 20% of the total weight of the composition, and (ii) removing the cleansing system from the skin.

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