Composition for caring for the skin

Abstract

The present invention relates to an anhydrous composition for caring for the skin, in particular the scalp, comprising (i) at least one linear alkane containing 10 to 28 carbon atoms, (ii) at least one oil of formula R1COOR2, where R1 represents a linear or branched fatty acid residue containing 4 to 40 carbon atoms and R2 represents a hydrocarbon-based chain containing 4 to 40 carbon atoms, with the proviso that R1+R2≧16, and (iii) at least one vegetable oil of triglyceride type. The present invention also relates to a non-therapeutic method for caring for the skin, in particular the scalp, comprising applying the composition to the skin, in particular the scalp.

Description

[Technical Field]

[0001] The present invention relates to a composition. In particular, the present invention relates to a composition for caring for the skin, in particular the scalp. The present invention also relates to a non-therapeutic method for caring for the skin, in particular the scalp. [Background technology]

[0002] The skin constitutes the physical barrier between the body and its surrounding environment and is composed of two tissues: the epidermis and the dermis.

[0003] The dermis provides a solid support for the epidermis. It is also the nutrient element of the epidermis. The dermis is primarily composed of fibroblasts and extracellular matrix, which itself consists primarily of collagen, elastin, and substances known as ground substance, which are synthesized by fibroblasts. Leukocytes, mast cells, and tissue macrophages are also found therein. The dermis also contains blood vessels and nerve fibers.

[0004] The epidermis is a desquamated, multilayered epithelium with an average thickness of 100 μm, and is conventionally divided into a basal layer of keratinocytes, which constitutes the germinal layer of the epidermis; a spinous layer composed of several layers of polyhedral cells arranged on the germinal cells; a granular layer composed of flattened cells containing distinct intracytoplasmic inclusions, keratohyalin granules; and finally, an upper layer known as the cornified layer (or stratum corneum), which is composed of keratinocytes in their final stage of differentiation, known as corneocytes. These are mummified, anucleate cells derived from keratinocytes. The accumulation of these corneocytes constitutes the cornified layer, which is responsible, among other things, for the barrier function of the epidermis, i.e., it constitutes a barrier against external aggressions, especially chemical, mechanical, or infectious aggressions, and also enables the body to protect against water loss.

[0005] There are many products that have been developed to treat hair during dyeing, bleaching, waving and / or straightening in order to change the appearance of the hair.

[0006] During application of products for dyeing, bleaching, waving and / or straightening hair, some ingredients come into contact with the scalp and pass across the stratum corneum towards the viable epidermis, which can cause discomfort and irritation to the scalp.

[0007] Therefore, there is a need to formulate cosmetic compositions for caring for the skin, particularly the scalp, that can prevent water-soluble dyes and strongly alkaline ingredients from passing across the stratum corneum to the viable epidermis. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] EP-A-0951897 [Patent Document 2] U.S. Patent No. A-5156911 [Patent Document 3] WO-A-01 / 19333 [Patent Document 4] U.S. Patent No. A-5736125 [Patent Document 5] U.S. Patent No. A-5519063 [Patent Document 6] EP-A-550745 [Patent Document 7] U.S. Patent Application No. 2007 / 0031361 [Patent Document 8] EP571882 [Patent Document 9] EP890583 [Patent Document 10] U.S. Patent No. 5,998,547 [Non-patent literature]

[0009] [Non-Patent Document 1] S. Nojima, "Melting behavior of poly(ε-caprolactone)-block-polybutadiene copolymers", Macromolecules, vol. 32, pp. 3727-3734 (1999) [Non-patent document 2] B. Boutevin et al., "Study of morphological and mechanical properties of PP / PBT," Polymer Bulletin, Vol. 34, pp. 117-123 (1995) [Non-patent document 3] P. Rangarajan et al., "Morphology of semicrystalline block copolymers of ethylene-(ethylene-alt-propylene)," Macromolecules, Vol. 26, pp. 4640-4645 (1993); [Non-patent document 4] P. Richter et al., "Polymer aggregates with crystalline cores: the system poly(ethylene)poly(ethylene-propylene)," Macromolecules, Vol. 30, pp. 1053-1068 (1997) [Non-Patent Document 5] IWHamley, General paper "Crystallization in block copolymers", Advances in Polymer Science, Vol. 148, pp. 113-137 (1999) Summary of the Invention [Problem to be solved by the invention]

[0010] It is an object of the present invention to provide a composition for caring for the skin, particularly the scalp, which is capable of preventing water-soluble dyes and strongly alkaline ingredients from passing across the stratum corneum towards the viable epidermis.

[0011] Another object of the present invention is to provide a composition for caring for the skin, in particular the scalp, which does not adversely affect the dyeing and / or bleaching effect of dyeing and / or bleaching products on the hair. [Means for solving the problem]

[0012] Thus, in a first aspect, the present invention provides an anhydrous composition for caring for the skin, in particular the scalp, comprising: (i) at least one linear alkane containing 10 to 28 carbon atoms; (ii) at least one oil of formula R1COOR2, where R1 represents a linear or branched fatty acid residue containing from 4 to 40 carbon atoms and R2 represents a hydrocarbon-based chain containing from 4 to 40 carbon atoms, with the proviso that R1+R2≧16; (iii) at least one vegetable oil in triglyceride form; The present invention relates to a composition comprising:

[0013] The compositions of the invention may be in the form of an oil gel or an oil balm.

[0014] In a second aspect, the present invention relates to a non-therapeutic method of caring for the skin, in particular the scalp, comprising applying to the skin, in particular the scalp, a composition according to the first aspect of the invention.

[0015] It has been found that the composition according to the present invention can prevent water-soluble dyes and strong alkaline components from passing through the stratum corneum toward the living epidermis, thereby preventing the scalp from being stained by the dye, while not negatively affecting the staining effect of a staining composition or the bleaching effect of a bleaching product on the hair.

[0016] Other subjects and characteristics, aspects and advantages of the present invention will become even more apparent upon reading the following "Description of the Invention" and "Examples."

[0017] Implementations of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: [Brief explanation of the drawings]

[0018] [Figure 1] Fluorescence intensity in the stratum corneum upon application of the staining composition, where 1 (pink area in Figure 1) represents the water-soluble fluorescent dye, 2 (blue area in Figure 1) represents keratinocytes and keratin, and 3 (green area in Figure 1) represents collagen. [Figure 2] Fluorescence intensity in the stratum corneum upon application of the comparative formulation 1 composition and the dyeing composition, where 1 (pink area in Figure 2) represents the water-soluble fluorescent dye, 2 (blue area in Figure 2) represents keratinocytes and keratin, and 3 (green area in Figure 2) represents collagen. [Figure 3] Fluorescence intensity in the stratum corneum upon application of the composition of the present invention Formulation 2 and the dyeing composition. In this figure, 2 (the blue part in Figure 3) represents keratinocytes and keratin, and 3 (the green part in Figure 3) represents collagen. [Figure 4] Fluorescence intensity in the stratum corneum upon application of the composition of the present invention Formulation 3 and the dyeing composition. In the figure, 1 (pink part in Figure 4) represents the water-soluble fluorescent dye, 2 (blue part in Figure 4) represents keratinocytes and keratin, and 3 (green part in Figure 4) represents collagen. [Figure 5] The amount of formazan for different treatments, in which "Ngc" represents the original cell viability, "alone" represents the cell viability without protection, "shawarzkopf" represents the cell viability under the protection of the Schwarzkopf product, N5 represents the cell viability under the protection of the composition of the present invention formulation 3, N8 represents the cell viability under the protection of the composition of the present invention formulation 2, and N9 represents the cell viability under the protection of the composition of the present invention formulation 1. [Figure 6] Photographs taken during evaluation of staining on pig skin. [Figure 7] Photographs taken during evaluation of hair swatches and model heads. [Figure 8] Photographs taken during evaluation of hair swatches. DETAILED DESCRIPTION OF THE INVENTION

[0019] In the following description, and unless otherwise indicated, the limits of ranges of values are included within this range, in particular in the expressions "between ... to ..." and "in the range from ... to ...".

[0020] Furthermore, as used herein, the phrase "at least one" is equivalent to the phrase "one or more."

[0021] Throughout this application, the term "comprising" is to be interpreted as encompassing all specifically mentioned features as well as optional, additional, unspecified features. As used herein, use of the term "comprising" also discloses embodiments in which no features are present other than those specifically mentioned (i.e., "consisting of").

[0022] Unless otherwise specified, all numbers expressing quantities of ingredients and the like used in the specification and claims are to be understood as modified by the term "about." Accordingly, unless indicated to the contrary, the numbers and parameters set forth herein are approximations that can be varied as needed to achieve the desired objectives.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. When a definition of a term herein conflicts with a meaning commonly understood by one of ordinary skill in the art to which this invention belongs, the definition set forth herein shall control.

[0024] All percentages in this invention refer to percentages by weight unless otherwise specified.

[0025] For the purposes of the present invention, the term "anhydrous" means that the composition according to the present invention contains less than 2 wt.%, and preferably less than 0.5 wt.%, of water relative to the total weight of the composition. If necessary, such small amounts of water can be provided by components of the composition that contain it in residual amounts but are not intentionally added. In particular, there is no water present in the composition.

[0026] According to a first aspect, the present invention provides an anhydrous composition for caring for the skin, in particular the scalp, comprising: (i) at least one linear alkane containing 10 to 28 carbon atoms; (ii) at least one oil of formula R1COOR2, where R1 represents a linear or branched fatty acid residue containing from 4 to 40 carbon atoms and R2 represents a hydrocarbon-based chain containing from 4 to 40 carbon atoms, with the proviso that R1+R2≧16; (iii) at least one vegetable oil in triglyceride form; The present invention provides a composition comprising:

[0027] linear alkanes According to a first embodiment, the composition according to the invention comprises at least one linear alkane containing from 10 to 28 carbon atoms.

[0028] Examples of linear alkanes suitable for use in the compositions of the present invention include n-decane (C10), n-undecane (C11), n-dodecane (C12), n-tridecane (C13), n-tetradecane (C14), n-pentadecane (C15), n-hexadecanol (C16), n-heptadecane (C17), n-octacosane (C18), n-nonadecane (C19), n-eicosane (C20), n-heneicosane (C21), n-docosane (C22), n-tricosane (C23), n-tetracosane (C24), n-pentacosane (C25), n-hexacosane (C26), n-heptacosane (C27), n-octacosane (C28), and mixtures thereof.

[0029] Preferably, the linear alkane is selected from linear C12 to C24 alkanes.

[0030] More preferably, the linear alkane is selected from linear C14 to C22 alkanes.

[0031] In some embodiments, the linear alkane used is a linear C15 to C19 alkane.

[0032] Commercially available linear alkanes include C15-C19 alkanes sold under the name EMOGREEN™ L19 by SEPPIC.

[0033] Advantageously, the linear alkane is present in an amount ranging from 0.1 wt.% to 10 wt.%, preferably from 0.2 wt.% to 5 wt.%, and more preferably from 0.5 wt.% to 3 wt.%, relative to the total mass of the composition.

[0034] Oil of formula R1COOR2 According to a first aspect, the composition according to the invention comprises at least one oil of formula R1COOR2.

[0035] In the formula R1COOR2, R1 represents a linear or branched fatty acid residue containing 4 to 40 carbon atoms, and R2 represents a hydrocarbon chain containing 4 to 40 carbon atoms, provided that R1+R2≧16.

[0036] Examples of oils of formula R1COOR2 that may be mentioned are PureCellin oil (cetostearyl octanoate), isononyl isononanoate, 2-ethylhexyl palmitate, octyldodecyl neopentanoate, stearyl heptanoate, stearyl caprylate, 2-octyldodecyl stearate, 2-octyldodecyl erucate, oleyl erucate, isostearyl isostearate, 2-octyldodecyl benzoate, octanoic, decanoic or ricinoleic acid alcohols or polyols, isopropyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, 2-ethylhexyl palmitate, 2-hexyldecyl laurate, 2-octyldecyl palmitate, 2-octyldodecyl myristate or 2-diethylhexyl succinate.

[0037] Preferably, the oil of formula R1COOR2 is selected from esters of C6 to C24 monocarboxylic acids with C4 to C20 alcohols, at least one of which is branched or unsaturated, more preferably from esters of C12 to C20 monocarboxylic acids with C4 to C10 alcohols, at least one of which is branched or unsaturated.

[0038] Most particularly, the oil of formula R1COOR2 is chosen from: C4-C10 alkyl myristates, in particular isobutyl myristate, isohexyl myristate, 2-ethylhexyl myristate or isodecanyl myristate, C4-C10 alkyl palmitates, in particular isobutyl palmitate, isohexyl palmitate, 2-ethylhexyl palmitate or isodecanyl palmitate, C4-C10 alkyl isostearate, in particular isobutyl isostearate, isohexyl isostearate, 2-ethylhexyl isostearate or isodecanyl isostearate, and - A mixture of these.

[0039] As a commercially available oil of formula R1COOR2, mention may be made of 2-ethylhexyl palmitate sold under the name CEGESOFT® C24 by the company BASF.

[0040] Advantageously, the oil of formula R1COOR2 is present in an amount ranging from 0.1 wt.% to 10 wt.%, preferably from 0.2 wt.% to 5 wt.%, and even more preferably from 0.5 wt.% to 3 wt.%, relative to the total weight of the composition.

[0041] Triglyceride vegetable oil According to a first embodiment, the composition according to the invention comprises at least one vegetable oil in triglyceride form.

[0042] Preferably, the vegetable oil of triglyceride type is chosen from sunflower seed oil, corn oil, soybean oil, mallow oil, grape seed oil, sesame seed oil, hazelnut oil, apricot oil, macadamia oil, castor oil, olive oil, avocado oil, argan oil, camellia oil, palm oil, corn germ oil, cottonseed oil, peanut oil, pumpkin seed oil, wheat germ oil, babassu oil, coconut oil, rapeseed oil, almond oil, linseed oil, safflower oil, and also mixtures thereof.

[0043] More preferably, the vegetable oil of triglyceride type is chosen from sunflower seed oil, jojoba seed oil, argania spinosa kernel oil, coconut oil, corn oil, soybean oil, mallow oil, grape seed oil, sesame seed oil, hazelnut oil, apricot oil, macadamia oil, castor oil and avocado oil.

[0044] Commercially available vegetable oils in triglyceride form include Helianthus annuus (sunflower) seed oil sold under the name REFINED SUNFLOWER OIL by AAK KAMANI PRIVATE, Simmondsia chinensis (jojoba) seed oil sold under the name JD FFL JOJOBA GOLDEN OIL by JOJOBA DESERT, Cocos nucifera (coconut) oil sold under the name ACTIVATED VIRGIN COCONUT OIL by BIOTROPICS, Argania spinosa kernel oil sold under the name LIPOFRUCTYL ARGAN BE LS 9779 by BASF BEAUTY CARE SOLUTION, and APRICOT KERNEL OIL REFINED by GUSTAV HEESS. Mention may be made of prunus armeniaca (apricot) kernel oil, sold by DAC.

[0045] Advantageously, the vegetable oil in triglyceride form is present in an amount ranging from 1 wt.% to 30 wt.%, preferably from 3 wt.% to 20 wt.%, and even better still from 8 wt.% to 15 wt.%, relative to the total mass of the composition.

[0046] Semi-crystalline or crystalline lipophilic thickeners Preferably, the composition according to the invention comprises a semi-crystalline or crystalline lipophilic thickener.

[0047] The term "lipophilic" as used herein refers to the degree of 5 "Soluble in oil" means a substance that is soluble in oil at a concentration of at least 1 wt. % (at 1000 kJ / Pa) relative to the total mass of the oil.

[0048] The semi-crystalline or crystalline lipophilic thickeners used in the present invention may be selected from semi-crystalline or crystalline polymers.

[0049] The semi-crystalline or crystalline polymer is preferably a semi-crystalline polymer. The term "semi-crystalline polymer" refers to a polymer that contains crystalline portions, crystalline pendant chains and / or terminal chains, or crystalline blocks in the main chain and / or at the terminals, and that contains amorphous portions in the main chain and has a first-order reversible temperature for phase change, specifically melting (solid-liquid transition). When the crystalline portions are in the form of crystalline blocks in the polymer main chain, the amorphous portions of the polymer are in the form of amorphous blocks, and the semi-crystalline polymer in this case is, for example, a diblock, triblock, or multiblock type block copolymer containing at least one crystalline block and at least one amorphous block. The term "block" generally refers to at least five identical repeating units. The crystalline blocks are thus of a different chemical nature from the amorphous blocks.

[0050] The semi-crystalline polymer according to the invention has a melting point above 30° C. (in particular in the range of 30° C. to 80° C.), preferably in the range of 30° C. to 60° C., in particular in the range of 40° C. to 50° C. This melting point is the first temperature of the change of state.

[0051] This melting point can be measured by any known method, in particular by means of a differential scanning calorimeter (DSC), for example the calorimeter sold under the name DSC Q2000 by the company TA Instruments.

[0052] Advantageously, the semi-crystalline polymers to which the invention is applied have a number average molecular weight of 1000 or more.

[0053] Advantageously, the semi-crystalline polymer of the composition of the invention has a number average molecular weight in the range of 2000 to 800000, preferably 3000 to 500000, better still 4000 to 150000, and in particular below 100000, better still 4000 to 99000. Preferably, the polymer has a number average molecular weight greater than 5600, for example in the range of 5700 to 99000.

[0054] For the purposes of the present invention, the expression "crystalline chain or block" means a chain or block that, when taken alone, would reversibly change from an amorphous state to a crystalline state depending on whether the temperature is above or below the melting point. For the purposes of the present invention, a "chain" is a group of atoms that is pendant or lateral to the polymer backbone. A "block" is a group of atoms that belongs to the backbone and that constitutes one of the repeating units of the polymer. Advantageously, a "pendant crystalline chain" may be a chain containing at least 6 carbon atoms.

[0055] Preferably, the crystalline blocks or chains of the semi-crystalline polymers represent at least 30%, and even better at least 40%, of the total mass of each polymer. The semi-crystalline polymers of the present invention containing crystalline blocks are block or multi-block polymers. They can be obtained by polymerization of monomers containing reactive double bonds (or ethylene bonds) or by polycondensation. When the polymers of the present invention are polymers containing crystalline side chains, these side chains are advantageously in random or statistical form.

[0056] Preferably, the semi-crystalline polymers that can be used in the compositions according to the invention are of synthetic origin. Moreover, they do not contain a polysaccharide backbone. Generally, the crystalline units (chains or blocks) of the semi-crystalline polymers according to the invention originate from the monomers containing the crystalline blocks or chains used to prepare the semi-crystalline polymer.

[0057] According to the present invention, the semi-crystalline polymer can be chosen from block copolymers comprising at least one crystalline block and at least one amorphous block, and homopolymers and copolymers bearing at least one crystalline side chain per repeat unit, and mixtures thereof.

[0058] Semicrystalline polymers that may be used in the present invention are specifically: - block copolymers of polyolefins with controlled crystallization, in particular those whose monomers are described in EP-A-0 951 897; polycondensates, in particular of the aliphatic or aromatic polyester type or of the aliphatic / aromatic copolyester type; homopolymers or copolymers carrying at least one crystallizable side chain and at least one crystallizable block in the main chain, such as those described in patent US Pat. No. 5,156,911; - homopolymers or copolymers carrying at least one crystallizable side chain, in particular containing fluoro groups, as described in patent document WO-A-01 / 19333; - and mixtures thereof.

[0059] In the last two cases, the crystallizable side chains or blocks are hydrophobic.

[0060] (i) Semicrystalline polymers containing crystalline side chains Mention may in particular be made of those defined in the patent documents US-A-5156911 and WO-A-01 / 19333: they are homopolymers or copolymers comprising 50% to 100% by weight of units resulting from the polymerization of one or more monomers carrying hydrophobic, crystallizable side chains.

[0061] These homopolymers or copolymers may be of any nature, provided that they meet the conditions listed above.

[0062] these are, by polymerization, in particular by free radical polymerization, of one or more monomers containing a reactive or ethylenic double bond, i.e. vinyl, (meth)acrylic or allylic groups, by polycondensation of one or more monomers carrying mutually reactive groups (carboxylic acids, sulfonic acids, alcohols, amines or isocyanates), such as polyesters, polyurethanes, polyethers, polyureas or polyamides, can be obtained.

[0063] Generally, these polymers are in particular those of formula (I):

[0064] [ka]

[0065] (wherein M represents an atom of the polymer main chain, S represents a spacer, and C represents a crystallizable group) The polymer is selected from homopolymers and copolymers derived from the polymerization of at least one monomer containing a crystallizable chain that can be represented by:

[0066] The crystallizable chain "-SC" may be aliphatic or aromatic, and may optionally be fluorinated or perfluorinated. "S" may in particular be linear, branched or cyclic (CH2). n group or (CH2CH2O) n group or (CHO) group, where n is an integer ranging from 0 to 22. Preferably, "S" is a linear group. Preferably, "S" and "C" are different.

[0067] When the crystalline chain "-SC" is a hydrocarbon-based aliphatic chain, this chain includes a hydrocarbon-based alkyl chain containing at least 11 carbon atoms, not more than 40 carbon atoms, and even better not more than 24 carbon atoms. This chain is in particular an aliphatic or alkyl chain containing at least 12 carbon atoms, and they are preferably C14 to C24 alkyl chains. When the chain is a fluoroalkyl or perfluoroalkyl chain, it contains at least 6 fluorinated carbon atoms, in particular at least 11 carbon atoms, of which at least 6 carbon atoms are fluorinated.

[0068] Examples of semi-crystalline polymers or copolymers retaining crystalline chains include those derived from the polymerization of one or more of the following monomers: (meth)acrylates of saturated alkyls having C14 to C24 alkyl groups, perfluoroalkyl (meth)acrylates having C11 to C15 perfluoroalkyl groups, N-alkyl (meth)acrylamides having C14 to C24 alkyl groups with or without fluorine atoms, vinyl esters containing alkyl or perfluoro(alkyl) chains having C14 to C24 alkyl groups (having at least 6 fluorine atoms per perfluoroalkyl chain), vinyl ethers containing alkyl or perfluoro(alkyl) chains having C14 to C24 alkyl groups and at least 6 fluorine atoms per perfluoroalkyl chain, C14 to C24 alpha-olefins such as octadecene, para-alkylstyrenes having alkyl groups containing 12 to 24 carbon atoms, and mixtures thereof.

[0069] When the polymer results from polycondensation, the hydrocarbon-based and / or fluorinated crystalline chains defined above are carried by monomers which may be diacids, diols, diamines or diisocyanates.

[0070] When the polymers that are the subject of the present invention are copolymers, these polymers also contain from 0 to 50% of Y or Z groups deriving from the copolymerization of: α) copolymerization of Y, which is a polar or non-polar monomer or a mixture of the two: When Y is a polar monomer, Y is either a monomer carrying a polyoxyalkylenated group (in particular an oxyethylenated and / or oxypropylenated group), a hydroxyalkyl(meth)acrylate, such as hydroxyethyl acrylate, (meth)acrylamide, N-alkyl(meth)acrylamide, N,N-dialkyl(meth)acrylamide, such as N,N-diisopropylacrylamide or N-vinylpyrrolidone (NVP), N-vinylcaprolactam, a monomer carrying at least one carboxylic acid group, such as (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid or fumaric acid, or a monomer carrying a carboxylic acid anhydride group, such as maleic anhydride, and mixtures thereof.

[0071] When Y is a non-polar monomer, Y may be a linear, branched or cyclic alkyl (meth)acrylate type ester, a vinyl ester, an alkyl vinyl ether, an α-olefin, styrene, or a styrene substituted with a C1-C10 alkyl group, such as α-methylstyrene.

[0072] For the purposes of the present invention, the term "alkyl", unless otherwise stated, especially denotes a C8 to C30 saturated group, and even better a C10 to C30 saturated group.

[0073] β) Copolymerization of Z, a polar monomer or mixture of polar monomers, where Z has the same definition as "polar Y" defined above.

[0074] Preferably, the semi-crystalline polymer containing crystallizable side chains is a C8 to C30, preferably C10 to C30 alkyl (meth)acrylate or a C8 to C30, preferably C 10 ~C 30 Homopolymers of alkyl(meth)acrylamides, copolymers of these monomers with hydrophilic monomers, preferably of a different nature from (meth)acrylic acid, such as N-vinylpyrrolidone or hydroxyethyl(meth)acrylate, and mixtures thereof.

[0075] (ii) a polymer having at least one crystalline block in the main chain These polymers are in particular block copolymers, consisting of at least two blocks of different chemical nature, one of which is crystalline. Block polymers as defined in US Pat. No. 5,156,911 may be used. olefinic or cycloolefinic block copolymers containing crystalline chains, such as, for example: - derived from the block polymerization of cyclobutene, cyclohexene, cyclooctene, norbornene (i.e., bicyclo(2,2,1)-2-heptene), 5-methylnorbornene, 5-ethylnorbornene, 5,6-dimethylnorbornene, 5,5,6-trimethylnorbornene, 5-ethylidenenorbornene, 5-phenylnorbornene, 5-benzylnorbornene, 5-vinylnorbornene, 1,4,5,8-dimethano-1,2,3,4,4a,5,8a-tetrahydronaphthalene, dicyclopentadiene, or mixtures thereof; ethylene, propylene, 1-butene, 3-methyl-1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene or 1-eicosene, or mixtures thereof; those derived from block polymerization of In particular copoly(ethylene / norbornene) block and (ethylene / propylene / ethylidene-norbornene) block terpolymers, which result from the block copolymerization of at least two C2 to C16, even better C2 to C12, and even better C4 to C12 α-olefins such as those listed above, and in particular block bipolymers of ethylene and 1-octene, can also be used. The copolymers may also be copolymers containing at least one crystalline block, the copolymer residue of which is amorphous (at room temperature). These copolymers may also contain two crystalline blocks of different chemical nature. Preferred copolymers are those which simultaneously contain a crystalline block and an amorphous block, both hydrophobic and lipophilic at room temperature, in a continuous distribution, for example polymers containing one of the following crystalline blocks and one of the following amorphous blocks: - Blocks that are crystalline in nature: a) those of polyester type, for example poly(alkylene terephthalates), b) those of polyolefin type, for example polyethylene or polypropylene. Amorphous lipophilic blocks, such as amorphous polyolefins or copoly(olefins), for example poly(isobutylene), hydrogenated polybutadiene or hydrogenated poly(isoprene).

[0076] Examples of such copolymers containing a crystalline block and a distinct amorphous block include: α) poly(ε-caprolactone)-b-poly(butadiene) block copolymers, preferably used hydrogenated, such as those described in the article by S. Nojima, "Melting behavior of poly(ε-caprolactone)-block-polybutadiene copolymers", Macromolecules, Vol. 32, pp. 3727-3734 (1999); β) hydrogenated block or multiblock poly(butylene terephthalate)-b-poly(isoprene) block copolymers, as cited in the article by B. Boutevin et al., "Study of morphological and mechanical properties of PP / PBT," Polymer Bulletin, Vol. 34, pp. 117-123 (1995); γ) Poly(ethylene)-b-copoly(ethylene / propylene) block copolymers, as cited in the article by P. Rangarajan et al., "Morphology of semicrystalline block copolymers of ethylene-(ethylene-alt-propylene)," Macromolecules, Vol. 26, pp. 4640-4645 (1993), and the article by P. Richter et al., "Polymer aggregates with crystalline cores: the system poly(ethylene)poly(ethylene-propylene)," Macromolecules, Vol. 30, pp. 1053-1068 (1997); δ) Poly(ethylene)-b-poly(ethylethylene) block copolymers, as listed in the general article by IW Hamley, "Crystallization in block copolymers," Advances in Polymer Science, Vol. 148, pp. 113-137 (1999).

[0077] The semi-crystalline polymer in the composition of the present invention may be partially crosslinked or uncrosslinked, as long as the degree of crosslinking does not prevent the polymer from dissolving or dispersing in the liquid fatty phase optionally present in the composition by heating above the melting point of the polymer.Therefore, crosslinking may be chemical crosslinking by reacting with polyfunctional monomers during polymerization.Crosslinking may also be physical crosslinking, which may be due to the establishment of hydrogen bonds or dipole-type bonds between groups held by the polymer, for example, dipole interactions between carboxylate ionomers (these interactions are small and are held by the polymer backbone), or due to phase separation between crystalline and amorphous blocks held by the polymer.

[0078] Preferably, the semi-crystalline polymer of the composition according to the invention is not crosslinked.

[0079] According to one particular embodiment of the invention, the polymer is chosen from copolymers resulting from the polymerization of at least one monomer containing a crystallizable chain chosen from saturated C14 to C24 alkyl (meth)acrylates, C11 to C15 perfluoroalkyl (meth)acrylates, C14 to C24 N-alkyl (meth)acrylamides, vinyl esters containing C14 to C24 alkyl or perfluoroalkyl chains, vinyl ethers containing C14 to C24 alkyl or perfluoroalkyl chains, C14 to C24 alpha-olefins, para-alkylstyrenes with an alkyl group containing 12 to 24 carbon atoms, with at least one optionally fluorinated C1 to C10 monocarboxylic acid ester or amide, with or without fluorine atoms, which have the following formula (II):

[0080] [ka]

[0081] wherein R1 is H or CH3, R represents an optionally fluorinated C1-C10 alkyl group, and X represents O, NH, or NR2 (wherein R2 represents an optionally fluorinated C1-C10 alkyl group). It can be expressed as:

[0082] According to one or more particular embodiments of the present invention, the polymer is derived from a monomer containing a crystallizable chain selected from saturated C14 to C22 alkyl (meth)acrylates, and even more particularly poly(stearyl acrylate) or poly(behenyl acrylate).

[0083] Specific examples of structured semi-crystalline polymers that may be used in the compositions according to the invention include those with the INCI name "Poly C 10 ~C 30 Alkyl acrylate" [Poly(C 10 ~C 30Mention may be made of polymers having a hydroxypropyl acrylate (alkyl acrylate), such as the Intelimer® products manufactured by Air Products, such as the product Intelimer® IPA 13-1, which is a polystearyl acrylate and has a melting point of 48°C, or the product Intelimer® IPA 13-6, which is a behenyl polymer.

[0084] The semi-crystalline polymers are in particular More specifically, derived from the copolymerization of acrylic acid and C5 to C16 alkyl (meth)acrylate, Copolymerization of acrylic acid with hexadecyl acrylate and isodecyl acrylate in a mass ratio of 1 / 16 / 3, Copolymerization of acrylic acid with pentadecyl acrylate in a mass ratio of 1 / 19, Copolymerization of acrylic acid, hexadecyl acrylate and ethyl acrylate in a mass ratio of 2.5 / 76.5 / 20, Copolymerization of acrylic acid, hexadecyl acrylate and methyl acrylate in a mass ratio of 5 / 85 / 10, Copolymerization of acrylic acid and octadecyl methacrylate in a mass ratio of 2.5 / 97.5, Copolymerization of hexadecyl acrylate, monomethyl ether of polyethylene glycol methacrylate containing 8 ethylene glycol units, and acrylic acid in a mass ratio of 8.5 / 1 / 0.5 those described in Examples 3, 4, 5, 7, 9 and 13 of US Pat. No. 5,156,911, containing a -COOH group, derived from It may be.

[0085] It is also possible to use the structure "O" from National Starch, which has a melting point of 44°C and is described in patent document US-A-5736125, as well as semi-crystalline polymers with crystalline pendant chains containing fluoro groups, as described in examples 1, 4, 6, 7 and 8 of patent document WO-A-01 / 19333.

[0086] It is also possible to use semi-crystalline polymers obtained from the copolymerization of stearyl acrylate with acrylic acid or NVP, which have melting points of 40°C and 38°C respectively, as described in patent documents US-A-5519063 or EP-A-550745.

[0087] It is also possible to use semicrystalline polymers obtained from the copolymerization of behenyl acrylate with acrylic acid or NVP, which have melting points of 60°C and 58°C, respectively, and which are described in patent documents US-A-5519063 and EP-A-550745.

[0088] Preferably, the semi-crystalline polymer does not contain any carboxylic acid groups.

[0089] Finally, the semi-crystalline polymer according to the invention can also be chosen from waxy polymers obtained by metallocene catalysis, such as those described in US Patent Application No. 2007 / 0031361.

[0090] These polymers are homopolymers or copolymers of ethylene and / or propylene prepared via metallocene catalysis, ie, by polymerization in the presence of a metallocene catalyst at low pressure.

[0091] The weight average molecular weight (Mw) of the waxes obtained via metallocene catalysis described therein is less than or equal to 25,000 g / mol, for example in the range of 2,000 to 22,000 g / mol, and even better in the range of 4,000 to 20,000 g / mol.

[0092] The number average molecular weight (Mn) of the waxes obtained via metallocene catalysis described therein is preferably less than or equal to 15,000 g / mol, for example in the range of 1,000 to 12,000 g / mol, and even better still in the range of 2,000 to 10,000 g / mol.

[0093] The polydispersity index I of a polymer is equal to the ratio of the weight average molecular weight Mw to the number average molecular weight Mn. Preferably, the polydispersity index of the waxy polymer is between 1.5 and 10, more preferably between 1.5 and 5, even more preferably between 1.5 and 3, and even better still between 2 and 2.5.

[0094] Waxy homopolymers and copolymers can be obtained from ethylene and / or propylene monomers in known manner, for example via metallocene catalysis according to the method described in patent document EP 571882.

[0095] The ethylene and / or propylene homopolymers and copolymers prepared via metallocene catalysis may be unmodified or "polar" modified (polar-modified waxes, i.e., waxes modified so that they have the properties of polar waxes). Polar-modified waxy homopolymers and copolymers can be prepared in known manner from unmodified waxy homopolymers and copolymers such as those described above by oxidation with an oxygen-containing gas, such as air, or by grafting with polar monomers, such as maleic acid or alkyl acids, or derivatives of these acids. These two routes, which allow the polar modification of polyolefins obtained via metallocene catalysis, are described, for example, in patent documents EP 890583 and U.S. Pat. No. 5,998,547, respectively, the contents of which are incorporated herein by reference.

[0096] According to the present invention, particularly preferred polar modified homopolymers and copolymers of ethylene and / or propylene prepared via metallocene catalysis are polymers modified so that they have hydrophilic properties. Examples that may be mentioned include homopolymers or copolymers of ethylene and / or propylene modified by the presence of hydrophilic groups such as maleic anhydride, acrylates, methacrylates, polyvinylpyrrolidone (PVP), etc.

[0097] Waxy ethylene and / or propylene homopolymers or copolymers modified by the presence of hydrophilic groups such as maleic anhydride or acrylates are particularly preferred.

[0098] Examples that can be mentioned include: - maleic anhydride modified polypropylene wax (PPMA) sold by Clariant or polypropylene-ethylene-maleic anhydride copolymers such as those sold under the name LicoCare by Clariant, such as LicoCare PP207 LP3349, LicoCare CM401 LP3345, LicoCare CA301 LP3346 and LicoCare CA302 LP3347, - unmodified polyethylene waxes sold by the company Clariant, for example the product LicoCare PE 102 LP3329.

[0099] Advantageously, the lipophilic thickener is present in an amount ranging from 0.1 wt.% to 10 wt.%, preferably from 0.2 wt.% to 8 wt.%, and even more preferably from 0.5 wt.% to 5 wt.%, relative to the total weight of the composition.

[0100] additional oil The composition according to the present invention may further comprise one or more additional oils in addition to the oils described above.

[0101] The additional oil may be a non-volatile oil and / or a volatile oil.

[0102] The oil may be a silicone oil, a fluoro oil, a hydrocarbon-based oil, or a mixture thereof.

[0103] The term "fluoro oil" means an oil containing at least one fluorine atom.

[0104] The oil may optionally contain oxygen, nitrogen, sulfur and / or phosphorus atoms, for example in the form of hydroxyl or acid groups.

[0105] The silicone oils and fluoro oils may be selected from polar oils, non-polar oils, or mixtures thereof.

[0106] The "hydrocarbon-based oil" used as the additional oil can be a polar oil.

[0107] For the purposes of the present invention, the term "polar oil" refers to an oil whose oil solubility parameter δa at 25°C is greater than 0 (J / cm 3 ) 1 / 2 It means oil other than

[0108] According to one preferred embodiment, the composition according to the invention comprises at least one additional oil, for example squalane.

[0109] Advantageously, the total amount of all oils is present in the composition of the invention in a range from 60 wt.% to 99.5 wt.% relative to the total weight of the composition.

[0110] Additional adjuvants or additives The compositions of the present invention may include conventional cosmetic adjuvants or additives, such as fragrances, chelating agents (e.g., disodium EDTA), preservatives (e.g., chlorophenesin and phenoxyethanol) and bactericides, fillers, pH adjusters (e.g., citric acid, sodium hydroxide, potassium hydroxide), and mixtures thereof.

[0111] Those skilled in the art will be able to select the amount of additional adjuvants or additives so as not to adversely affect the end use of the composition according to the invention.

[0112] According to one particularly preferred embodiment, the invention relates to an anhydrous composition for caring for the skin, in particular the scalp, comprising, relative to the total weight of the composition: (i) 0.5 wt.% to 3 wt.% of at least one linear C15 to C19 alkane; (ii) 0.5 wt.% to 3 wt.% of at least one C4 to C10 alkyl palmitate; (iii) 8 wt.% to 15 wt.% of at least one triglyceride-type vegetable oil selected from sunflower seed oil, jojoba seed oil, argania spinosa kernel oil, coconut oil, corn oil, soybean oil, mallow oil, grape seed oil, sesame seed oil, hazelnut oil, apricot oil, macadamia oil, castor oil, and avocado oil; (iv) 0.5 wt.% to 5 wt.% of at least one poly(C10-C30 alkyl acrylate); The present invention provides a composition comprising:

[0113] Forms and uses of galenical preparations The compositions of the invention may be in the form of an oil gel or an oil balm.

[0114] The viscosity of the compositions according to the invention can be measured at 25° C. using a ProRheo R180 viscometer equipped with spindle M2 or M3 rotating at 200 rpm.

[0115] According to a preferred embodiment, the composition of the invention has a viscosity of 10 UD (Deviation Units) to 80 UD, preferably 10 UD to 50 UD, measured at 25°C using a Rheomat R180 viscometer equipped with spindle M2 rotating at 200 rpm.

[0116] According to a second aspect, the present invention relates to a non-therapeutic method for caring for the skin, in particular the scalp, comprising applying to the skin, in particular the scalp, a composition according to the first aspect of the invention.

[0117] The composition according to the present invention is capable of preventing water-soluble dyes and strongly alkaline ingredients from passing across the stratum corneum towards the viable epidermis.

[0118] On the other hand, the composition according to the invention does not have a negative effect on the dyeing effect of the dyeing composition on the hair.

[0119] Furthermore, the compositions according to the invention do not have a negative effect on the bleaching effect of bleaching products on the hair.

[0120] The following examples serve to illustrate the invention but are not, however, limiting in nature. [Example]

[0121] The main raw materials used, their trade names and their suppliers are listed in Table 1.

[0122] [Table 1]

[0123] Example 1 Preparation of the Composition Compositions according to comparative formulation (Comp.) 1 and invention formulations (Inv.) 1 to 3 were prepared according to the contents given in Table 2 (the contents are expressed as a percentage by weight of the active material relative to the total weight of each composition, unless otherwise specified).

[0124] [Table 2]

[0125] Preparation method: The compositions listed above are prepared as follows, taking the composition of Inventive Formulation 1 as an example: 1) Mix ethylhexyl palmitate, Helianthus annuus (sunflower) seed oil, Simmondsia chinensis (jojoba) seed oil, Argania spinosa kernel oil, Prunus armeniaca (apricot) kernel oil, Cocos nucifera (coconut) oil and poly C10-C30 alkyl acrylate to obtain a mixture, heat the mixture to 50°C, and homogenize the mixture by stirring; 2) adding a C15-C19 alkane and squalane to the mixture, and cooling the mixture to room temperature by stirring; and 3) Tocopherol is added to the mixture to obtain a composition.

[0126] Example 2 Evaluation of the composition The appearance of each of the compositions prepared in Example 1 was observed.

[0127] Each of the compositions prepared in Example 1 was characterized for viscosity, protection capacity, and effect on staining and bleaching.

[0128] viscosity The viscosity is measured at 25°C using a Rheomat R180 viscometer equipped with an M3 or M2 spindle, the measurement being carried out at a shear rate of 200 rpm after 10 minutes of rotation of the spindle in the composition (after which the time stabilization of the viscosity and of the spindle speed is observed).

[0129] The appearance and viscosity are summarized in Table 3.

[0130] [Table 3]

[0131] defensive ability i) Evaluation by confocal microscope The in vitro protective function of the compositions of Inventive Formulations 2 and 3 and Comparative Formulation 1 was evaluated using confocal laser scanning microscopy as follows: 1) Clean and dry the pig skin purchased from the market; 2) Apply the composition to be tested to the skin at 30 μl / cm 2 Apply with, 3)Table 4:

[0132] [Table 4]

[0133] Prepare the dyeing compositions as irritating compositions according to the contents given in (the contents are expressed as percentages by weight of the active material relative to the total weight of the respective composition, unless otherwise specified), 4) Apply the stimulus sample to the skin at 75 μl / cm 2 Apply for 40 minutes at 5) Wipe off with tissue. 6) Select a central region and freeze the resulting section; 7) Image processing using a microscope.

[0134] FIG. 1 shows the fluorescence intensity in the stratum corneum upon direct application of the staining composition onto pig skin.

[0135] From Figure 1 it can be seen that the dye in the dyeing composition passes across the stratum corneum towards the viable epidermis, which can cause discomfort and irritation.

[0136] FIG. 2 shows the fluorescence intensity in the stratum corneum upon application of the Comparative Formulation 1 composition and the dyeing composition.

[0137] FIG. 3 shows the fluorescence intensity in the stratum corneum upon application of the composition of the present invention Formulation 2 and the dyeing composition.

[0138] FIG. 4 shows the fluorescence intensity in the stratum corneum upon application of the composition of Inventive Formulation 3 and the dyeing composition.

[0139] 2-4, it can be seen that the compositions of Inventive Formulations 2 and 3 can effectively block the penetration of dyes into the skin compared to the composition of Comparative Formulation 1. Meanwhile, the composition of Inventive Formulation 2 is more effective in blocking the penetration of dyes into the skin.

[0140] ii) Evaluation with Episkin™ The in vitro protection function of the compositions of Formulations 1 to 3 of the present invention and the pre-staining protection oil from Schwarzkopf was evaluated using EpiSkin™ as follows. Model: The EpiSkin™ reconstructed epidermis model was used. EpiSkin™ tissue and medium were purchased from Shanghai EPISKIN Biotechnology Co., Ltd. The size of the EpiSkin™ tissue was 1.07 cm 2 is.

[0141] Decolorizing products The test composition (30 μl) was applied topically to the epidermis model (two epidermis units were used per test group). Then, 75 μl of a mixture of hair bleaching powder (L'oreal Professional Blond Studio 8, manufactured by L'oreal) and developer (L'oreal Professional Oxidant Cream, manufactured by L'oreal) in a volume ratio of 1:1.5 was applied topically to the epidermis model (application using a nylon mesh at room temperature for 45 minutes). Exposure was terminated by rinsing with phosphate-buffered saline (PBS).

[0142] Coloring products The test composition (30 μl) was topically applied to the epidermal model (two epidermal units were used per test group). Then, 75 μl of a mixture of a colorant (L'oreal Professional Maji Fashion Colorant 12.11 dye-free, manufactured by L'oreal) and a developer (L'oreal Professional Oxidant Cream, manufactured by L'oreal) in a volume ratio of 1:1.5 was topically applied to the epidermal model (application using a nylon mesh at room temperature for 45 minutes). Exposure was terminated by rinsing with phosphate-buffered saline (PBS).

[0143] Post-incubation: The epidermis was then incubated at 37°C for 18 hours.

[0144] Viability was assessed by incubating tissues in MTT solution for 3 hours, and precipitated formazan was then extracted with acidified isopropanol at 4°C for 2 days and quantified spectrophotometrically at 570 nm in a 96-well plate.

[0145] Epidermis without the tested composition was applied (bleaching + coloring alone) and untreated epidermis served as positive and negative controls, respectively.

[0146] FIG. 5 shows the amount of formazan for different treatments, where "Ngc" represents the original cell viability, "alone" represents the cell viability without protection, "shawarzkopf" represents the cell viability under the protection of the Schwarzkopf product, N5 represents the cell viability under the protection of the composition of the present invention formulation 3, N8 represents the cell viability under the protection of the composition of the present invention formulation 2, and N9 represents the cell viability under the protection of the composition of the present invention formulation 1.

[0147] From Figure 5, it can be seen that the compositions of the present invention Formulations 1 to 3 can effectively block chemicals such as ammonium hydroxide and ethanolamine from penetrating into the skin and irritating the scalp.

[0148] iii) Evaluation by staining on pig skin The in vitro protective function of the compositions of Inventive Formulation 1 and Comparative Formulation 1 was evaluated by staining on pig skin.

[0149] FIG. 6 shows photographs taken during the evaluation by staining on pig skin.

[0150] As illustrated in Figure 6, the evaluation process includes: 1) 4cm 2 The pig skin is first washed using a standard shampoo DOP (L'oreal) and then dried. 2) The composition to be tested was applied to the skin of a pig at a rate of 30 μ / cm 2 Apply with, 3) A dyeing composition (a mixture of Maji Fashion Color No. 1 manufactured by L'oreal and Developer 30 manufactured by L'oreal in a volume ratio of 1:2) was applied to a cloth at a density of 75 μ / cm 2 Apply for 30 minutes at 4) Rinse with DOP (standard shampoo).

[0151] FIG. 6 shows photographs taken during the staining evaluation on pig skin, where "w / o protect" indicates that the tested composition was not applied, "w / scalp shield" indicates that the composition of Inventive Formulation 1 was applied, and "w / LP still cap" indicates that the composition of Comparative Formulation 1 was applied.

[0152] From FIG. 6, it can be seen that the composition of Inventive Formulation 1 can effectively block the penetration of dye into the skin compared to the composition of Comparative Formulation 1.

[0153] Influence of dye products on the dyeing performance of hair The effect of the composition of Inventive Formulation 1 on the dyeing effect of dye products on hair was evaluated on hair swatches (hair type: Chinese natural hair) and model heads.

[0154] FIG. 7 shows photographs taken during evaluation on hair swatches and model heads.

[0155] As illustrated in Figure 7, the evaluation process includes: 1) Wash the head twice with DOP (standard shampoo, 12 g of shampoo per whole head per test); 2) Apply 7.5 g of the composition to be tested to half of the head and massage the right half of the head for 1 minute; 3) Applying a dyeing product (150 g of a mixture of L'oreal Maji 12.11 and L'oreal Developer 30 in a volume ratio of 1:2) to the entire head; 4) Wash the entire head with DOP and observe the color difference between the left and right sides.

[0156] From Figure 7 it can be seen that there is no obvious color difference between the left side of the head and the right side of the head, which indicates that the composition according to the invention does not have a negative effect on the dyeing effect of dye products on the hair.

[0157] Influence of bleaching products on hair bleaching efficacy The effect of the composition of Inventive Formulation 1 on the bleaching effect of a bleaching product on hair was evaluated on hair swatches (hair type: Chinese natural hair).

[0158] Figure 8 shows photographs taken during the evaluation of the hair swatches.

[0159] As illustrated in Figure 8, the evaluation process includes: 1) Select three identical hair samples (No. 1, No. 2 and No. 3) and keep hair sample No. 1 untreated; 2) First, the composition to be tested is applied to hair swatch No. 2 (0.15 g of the composition to be tested per gram of hair swatch No. 2), and then a mixture of hair bleaching powder (L'oreal professional blond studio 8, manufactured by L'oreal) and a developer (L'oreal professional oxidant cream, manufactured by L'oreal) in a volume ratio of 1:1.5 is applied to hair swatch No. 2 for 45 minutes (10 g of the mixture per gram of hair swatch No. 2); 3) The same mixture of bleaching powder and developer is applied to hair swatch No. 3 for 45 minutes (10 g of mixture per gram of hair swatch No. 3); 4) Compare the color of hair sample No. 2 with that of hair sample No. 3.

[0160] From Figure 8, it can be seen that there is no obvious color difference between hair swatch No. 2 and hair swatch No. 3, which indicates that the composition according to the present invention does not have a negative impact on the bleaching effect of the bleaching product on the hair. [Explanation of symbols]

[0161] 1. Water-soluble fluorescent dyes 2. Keratinocytes and keratin 3. Collagen

Claims

1. 1. An anhydrous composition for caring for the skin, comprising: (i) at least one linear alkane containing from 12 to 22 carbon atoms; (ii) 0.1 wt.% to 10 wt.% of an ester of a C12 to C20 monocarboxylic acid with a C4 to C10 alcohol, wherein at least one of the acid and alcohol is branched, and 1 COOR 2 and at least one oil selected from the group consisting of (iii) 1 wt.% to 30 wt.% of at least one vegetable oil in triglyceride form; (iv) 0.1 wt.% to 10 wt.% of at least one poly(C10-C30 alkyl acrylate); wherein the total amount of all oils is present in the composition in a range of 60 wt.% to 99.5 wt.%, based on the total weight of the composition.

2. 2. The composition of claim 1, wherein the linear alkane is selected from linear C14 to C22 alkanes.

3. 3. The composition of claim 1, wherein the linear alkane contains from 15 to 19 carbon atoms.

4. formula R 1 COOR 2 4. The composition according to claim 1, wherein the oil is selected from C4 to C10 alkyl myristate, C4 to C10 alkyl palmitate, C4 to C10 alkyl isostearate, and mixtures thereof.

5. formula R 1 COOR 2 The oil isobutyl myristate, isohexyl myristate, 2-ethylhexyl myristate or isodecanyl myristate, isobutyl palmitate, isohexyl palmitate, 2-ethylhexyl palmitate or isodecanyl palmitate, isobutyl isostearate, isohexyl isostearate, 2-ethylhexyl isostearate or isodecanyl isostearate, and - A mixture of these 4. The composition according to claim 1, wherein the composition is selected from the group consisting of:

6. formula R 1 COOR 2 6. The composition according to claim 1, wherein the oil is present in an amount ranging from 0.5 wt.% to 3 wt.% relative to the total weight of the composition.

7. 7. The composition according to claim 1, wherein the vegetable oil of triglyceride type is chosen from sunflower seed oil, jojoba seed oil, argania spinosa kernel oil, coconut oil, corn oil, soybean oil, mallow oil, grape seed oil, sesame seed oil, hazelnut oil, apricot oil, macadamia oil, castor oil and avocado oil.

8. 8. The composition according to claim 1, wherein the vegetable oil in triglyceride form is present in an amount ranging from 8 wt.% to 15 wt.% relative to the total mass of the composition.

9. The composition of claim 1, wherein the poly(C10-C30 alkyl acrylate) is present in an amount ranging from 0.5 wt.% to 10 wt.%, based on the total weight of the composition.

10. relative to the total mass of the composition, (i) at least one linear C15-C19 alkane; (ii) 0.1 wt.% to 10 wt.% of at least one C4 to C10 alkyl palmitate; (iii) 8 wt.% to 15 wt.% of at least one triglyceride type vegetable oil selected from sunflower seed oil, jojoba seed oil, argania spinosa kernel oil, coconut oil, corn oil, soybean oil, mallow oil, grape seed oil, sesame seed oil, hazelnut oil, apricot oil, macadamia oil, castor oil, and avocado oil; (iv) 0.5 wt.% to 5 wt.% of at least one poly(C10-C30 alkyl acrylate); 10. The composition of claim 1, which is a cosmetic composition comprising:

11. A non-therapeutic method of caring for the skin, comprising applying to the skin a composition according to any one of claims 1 to 10.

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