W / O type composition containing polyion complex and powder

Abstract

To provide a stable W / O type composition that can provide keratinous substances such as skin with at least an acceptable level of sebum control, good spreadability, and a comfortable texture. [Solution] The present invention relates to a composition comprising (a) at least one cationic polymer, (b) at least one nonpolymeric acid or salt thereof having two or more pKa values, (c) at least one anionic polymer, and (d) a plurality of aqueous phases comprising water, and (e) a fatty phase comprising at least one oil, wherein the aqueous phase is dispersed in the fatty phase, and the composition further comprises (i) at least one inorganic oxide and (ii) at least one fatty acid or salt thereof, and (f) at least one first powder. The composition according to the present invention is stable and can provide keratinous substances such as skin with at least an acceptable level of sebum control, good spreadability, and a comfortable feel.

Description

Technical Field

[0001] The present invention relates to a W / O (water-in-oil) composition containing a cationic and an anionic polymer and a powder, and a beauty method using the composition.

Background Art

[0002] As is known in the art, certain cosmetic compositions use polyion complexes formed from cationic and anionic polymers.

[0003] For example, WO2023 / 120388 discloses a composition useful for cosmetic treatments, comprising at least one polyion complex particle containing at least one cationic polymer, at least one anionic polymer, and at least one non-polymeric acid having at least two pKa values. WO2023 / 120388 also discloses that the compositions disclosed herein may contain oil and may be in the form of an O / W (oil-in-water) emulsion.

[0004] In addition, the formulation of environmentally compatible cosmetics, designed and developed taking into account environmental issues, has become a major goal in meeting global challenges.

[0005] Therefore, it is essential to propose more sustainable compositions, preparation methods and ingredients to address these environmental issues.

[0006] In this context, it is important to develop new cosmetic compositions with a better carbon footprint, particularly by promoting the use of renewable raw materials and / or materials with a good index of naturalness and / or materials of natural origin.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent document 2

Patent document 3

Patent document 4

Patent document 5

Patent document 6

Patent document 7

Patent document 8

Patent document 9

Patent document 10

Non-licensed literature

[0008] [Non-licensed document 1] "Micelle formation of random copolymers of sodium 2-(acrylamido)-2-methylpropanesulfonate and nonionic surfactant macromonomer in water as studied by fluorescence and dynamic light scattering - Macromolecules, 2000, Volume 33, No. 10-3694~3704" [Non-licensed document 2] "Hyaluronan fragments: an information-rich system", R. Stern, European Journal of Cell Biology 58 (2006) pp. 699~715 [Non-licensed document 3] D. Campoccia et al., "Semisynthetic resorbable materials from hyaluronan esterification", Biomaterials 19 (1998) pp. 2101-2127 [Non-Patent Document 4] Walter Noll, Chemistry and Technology of Silicones (1968), Academic Press [Non-Patent Document 5] Cosmetics and Toiletries, Vol. 91, January 1976, pp. 27-32, Todd & Byers, Volatile Silicone Fluids for Cosmetics [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] Controlling sebum on keratinous substances such as skin is becoming important because, for example, it can help achieve a matte appearance for keratinous substances.

[0010] In addition, compositions for controlling sebum, applied to keratinous substances such as skin, should spread well on the keratinous surface and provide a comfortable user experience.

[0011] Naturally, such compositions should be stable so as not to cause phase separation when the composition contains an aqueous phase and a fatty phase.

[0012] Therefore, a stable W / O type composition is needed that can provide keratinous substances such as skin with at least an acceptable level of sebum control, good spreadability, and a comfortable texture.

[0013] Therefore, the object of the present invention is to provide a stable W / O type composition that can provide keratinous substances such as skin with at least an acceptable level of sebum control, good spreadability, and a comfortable texture. [Means for solving the problem]

[0014] The above objective of the present invention is, (a) at least one cationic polymer, (b) Nonpolymeric acids or salts thereof having at least one of two or more pKa values, (c) at least one anionic polymer, and (d) water Multiple aqueous phases including, (e) at least one type of oil Fat phase including A composition comprising, preferably a cosmetic composition, more preferably a cosmetic composition for keratinous substances such as skin, The aqueous phase is dispersed in the fatty phase. The composition is (i) at least one inorganic oxide, preferably a metal oxide, more preferably an alkaline earth metal oxide, and (ii) At least one fatty acid or a salt thereof, preferably a saturated fatty acid or a salt thereof, more preferably a metal salt of a saturated fatty acid This can be achieved by a composition further comprising (f) at least one first powder.

[0015] (a) The cationic polymer may be selected from polylysine, chitosan, and mixtures thereof.

[0016] The amount of (a) cationic polymer in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0017] (b) The nonpolymeric acid or salt thereof having two or more pKa values ​​may be an organic acid or salt thereof, preferably a hydrophilic or water-soluble organic acid or salt thereof, more preferably phytic acid or salt thereof.

[0018] The amount of (b) a nonpolymeric acid or salt thereof having two or more pKa values ​​in the composition according to the present invention may be 0.001% to 10% by mass, preferably 0.003% to 5% by mass, and more preferably 0.005% to 1% by mass, based on the total mass of the composition.

[0019] (c) The anionic polymer can be selected from the group consisting of polysaccharides, such as alginic acid, hyaluronic acid and cellulose polymers, anionic (co)polyamino acids, such as (co)polyglutamic acid, (co)poly(meth)acrylic acid, (co)polyamic acid, (co)polystyrene sulfonate, (co)poly(vinyl sulfate), dextran sulfate, chondroitin sulfate, (co)polymaleic acid, polyfumaric acid, maleic acid (co)polymer, and salts thereof.

[0020] The amount of (c) anionic polymer in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0021] The amount of (d) water in the composition according to the present invention may be 10% to 50% by mass, preferably 15% to 45% by mass, and more preferably 20% to 40% by mass, based on the total mass of the composition.

[0022] The amount of (e) oil in the composition according to the present invention may be 10% to 50% by mass, preferably 15% to 45% by mass, and more preferably 20% to 40% by mass, based on the total mass of the composition.

[0023] The amount of (f) the first powder in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, relative to the total mass of the composition.

[0024] The composition according to the present invention may further comprise (g) at least one second powder selected from particles comprising silica and hydroxyapatite, and / or (h) at least one third powder selected from particles comprising silica, titanium dioxide, and magnesium oxide or magnesium hydroxide.

[0025] The amount of (g) the second powder and / or (h) the third powder in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0026] The amount of aqueous phase in the composition according to the present invention may be 30% to 70% by mass, preferably 35% to 65% by mass, and more preferably 40% to 60% by mass, based on the total mass of the composition.

[0027] The amount of fatty phase in the composition according to the present invention may be 30% to 70% by mass, preferably 35% to 65% by mass, and more preferably 40% to 60% by mass, based on the total mass of the composition.

[0028] The present invention also relates to a cosmetic method for keratinous substances such as skin, Steps to apply the composition according to the present invention to a keratin substance. This also includes methods. [Modes for carrying out the invention]

[0029] As a result of diligent research, the inventors have discovered that it is possible to provide a W / O type composition that can provide keratinous substances such as skin with at least acceptable sebum control, good spreadability, and a comfortable texture.

[0030] Therefore, the composition according to the present invention, (a) at least one cationic polymer, (b) Nonpolymeric acids or salts thereof having at least one of two or more pKa values, (c) at least one anionic polymer, and (d) water Multiple aqueous phases including, (e) at least one type of oil Fat phase including Includes, The aqueous phase is dispersed in the fatty phase. composition, (i) at least one inorganic oxide, preferably a metal oxide, more preferably an alkaline earth metal oxide, and (ii) At least one fatty acid or a salt thereof, preferably a saturated fatty acid or a salt thereof, more preferably a metal salt of a saturated fatty acid (f) further comprises at least one first powder containing

[0031] (a) Cationic polymers and (c) Anionic polymers can form polyionic complexes.

[0032] (a) The cationic polymer may be (b) ionically crosslinked with two or more nonpolymeric acids or salts thereof having pKa values. Therefore, the polyion complex may also be crosslinked.

[0033] The composition according to the present invention is stable. For example, phase separation of the composition according to the present invention can be prevented even at high temperatures. Therefore, the composition according to the present invention can be stored for a long period of time.

[0034] The compositions according to the present invention can provide keratinous substances such as skin with at least an acceptable level of sebum control, preferably good sebum control. Therefore, the compositions according to the present invention can provide a matte effect. Accordingly, the compositions according to the present invention can give keratinous substances such as skin a matte appearance.

[0035] Furthermore, the composition according to the present invention can provide good spreadability. Therefore, the composition according to the present invention can spread well on keratinous substances such as skin.

[0036] Furthermore, the composition according to the present invention can provide a comfortable texture, such as being non-greasy and non-sticky.

[0037] (a) Cationic polymers and / or (c) Anionic polymers can be obtained from natural resources, and therefore (a) Cationic polymers and / or (c) Anionic polymers can be environmentally friendly. In addition, (f) First powder and / or (g) Second powder and / or (h) Third powder can be obtained from natural resources, and therefore they can also be environmentally friendly. Accordingly, compositions according to the present invention can contain environmentally friendly components.

[0038] The compositions according to the present invention can at least provide sebum control and therefore may be useful in makeup products, particularly foundations or primers.

[0039] The present invention will be described in more detail below.

[0040] [Composition] The composition according to the present invention is (a) at least one cationic polymer, (b) Nonpolymeric acids or salts thereof having at least one of two or more pKa values, (c) at least one anionic polymer, and (d) water Multiple aqueous phases including, (e) at least one type of oil Fat phase including Includes, The aqueous phase is dispersed in the fatty phase. composition, (i) at least one inorganic oxide, preferably a metal oxide, more preferably an alkaline earth metal oxide, and (ii) At least one fatty acid or a salt thereof, preferably a saturated fatty acid or a salt thereof, more preferably a metal salt of a saturated fatty acid (f) further comprises at least one first powder containing

[0041] The compositions according to the present invention will be described in more detail below.

[0042] (cationic polymer) The composition according to the present invention comprises (a) at least one cationic polymer.

[0043] (a) The type of cationic polymer is not limited. Two or more different types of cationic polymers may be used in combination. Therefore, a single type of cationic polymer or a combination of different types of cationic polymers can be used.

[0044] Cationic polymers have a positive charge density. (a) The charge density of the cationic polymer may be 0.01 meq / g to 20 meq / g, preferably 0.05 to 15 meq / g, and more preferably 0.1 to 10 meq / g.

[0045] (a) The cationic polymer may be contained in an aqueous phase containing (d) water.

[0046] (a) The molecular weight (Da) of the cationic polymer may be less than 20,000, preferably less than 15,000, and more preferably less than 10,000. In other words, (a) the cationic polymer may have a low molecular weight.

[0047] (a) The molecular weight (Da) of the cationic polymer may be greater than 1,000, preferably greater than 1,500, and more preferably greater than 2,000.

[0048] Therefore, (a) the molecular weight (Da) of the cationic polymer may be greater than 1,000 and less than 20,000, preferably greater than 1,500 and less than 15,000, and more preferably greater than 2,000 and less than 10,000.

[0049] Unless otherwise defined in the description, "molecular weight" refers to the mass-average molecular weight. Molecular weight can be measured or determined by gel permeation chromatography, for example, in accordance with ASTM D5296-19.

[0050] According to the present invention, (a) the cationic polymer may be selected from the group consisting of polylysine, chitosan, and mixtures thereof.

[0051] (a) The cationic polymer is preferably selected from polylysine.

[0052] Polylysine corresponds to the condensation of several amino acids in lysine. Polylysine can be a natural homopolymer of L-lysine that can be produced by bacterial fermentation. Polylysine is typically used as a natural preservative in food. Polylysine is a polyelectrolyte that is soluble in polar solvents such as water.

[0053] Polylysine may be, for example, epsilon-polylysine (or "ε-polylysine"), which is a condensation of the amino group at the ε position of lysine with a carboxyl group, or alpha-polylysine (or "α-polylysine"), which is a condensation of the amino group at the α position of lysine with a carboxyl group. Polylysine is commercially available in various forms such as poly-D-lysine and poly-L-lysine. Generally, polylysine is a condensate of L-lysine, i.e., poly-L-lysine.

[0054] Examples of polylysine include the following: - Epsilon-poly-L-lysine, a 25% solution of epsilon-poly-L-lysine having a molecular weight of approximately 4,700 in aqueous solution, manufactured by JNC CORPORATION; and - Polylysine from Shandong Freda Biotechnology, in the form of a white to creamy yellow powder with a molecular weight between 4,130 and 5,776.

[0055] According to one particular embodiment, the polylysine may be a modified polylysine, for example, a polylysine having a fatty acid chain as described in patent application FR2889448, a polylysine having a guanidine or biguanidine functional group as described in patent application FR2851465, or a thiolated polylysine as described in patent application FR2853533.

[0056] Polylysine may be in the form of an organic or inorganic salt. Acid addition salts include, for example, hydrochloric acid or hydrobromic acid, sulfuric acid, citric acid, succinic acid, tartaric acid, lactic acid, para-toluenesulfonic acid, phosphoric acid, or acetate salts, or fatty acid salts such as linoleic acid, oleic acid, palmitic acid, stearic acid, behenic acid, and 18-methylicosanoic acid. Base addition salts include, for example, sodium salts, calcium salts, or hydroxyalkylamine salts, such as N-methylglucamine, aminopropanediol, or triethanolamine.

[0057] In some preferred embodiments of the present invention, the polylysine of the present invention exists in the form of 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 a dye compound. In one embodiment of the present invention, the polylysine is not covalently bonded to a polyorganosiloxane compound. The term "polyorganosiloxane" is well known in the art and means a compound having a Si-O backbone and an organic functional group bonded to the backbone.

[0058] In another embodiment of the present invention, polylysine is in a free form. The term “free form” as used herein means that polylysine is not covalently bonded to any other compound.

[0059] (a) The cationic polymer may be selected from chitosan.

[0060] Chitosan is extremely rare in nature. It has only been reported in the exoskeleton of certain insects, such as termite queens, and in the cell walls of certain types of fungi, specifically the Zygomycetes.

[0061] Chitosan can be obtained by the deacetylation of chitin. Chitin is a polysaccharide composed of several N-acetyl-D-glucosamine units linked together by β-linkages (1,4).

[0062] The ideal chemical structure of chitosan is a sequence of β-D-glucosamine monomers linked by glycosidic bonds (1→4).

[0063] The "chitosan" according to the present invention refers to any copolymer formed from the constituent units N-acetyl-D-glucosamine and D-glucosamine, wherein the degree of acetylation is less than 90%, preferably less than 80%, preferably less than 70%, preferably less than 60%, and preferably less than 50%. Chitosan consists of glucosamine sugar units (deacetylated units) and N-acetyl-D-glucosamine units (acetylated units) linked together by β-type bonds (1,4), and is a poly(N-acetyl-D-glucosamine)-poly(D-glucosamine) type polymer.

[0064] More preferably, the degree of acetylation of chitosan is 40% or less, preferably 35% or less, preferably 25% or less, preferably 15% or less, and preferably 10% or less.

[0065] The degree of acetylation is the percentage of acetylated units relative to the total number of units, and can be determined by Fourier transform infrared spectroscopy (FT-IR) or titration with a strong base.

[0066] The chitosan according to the present invention is preferably a polysaccharide prepared from fungal sources. In particular, it is extracted and purified from safe and abundant food or biotechnologically derived fungi, such as mushrooms (Agaricus bisporus) or black mold (Aspergillus niger).

[0067] The chitosan according to the present invention is preferably derived from fungi of the Ascomycete class, particularly Aspergillus oryzae and / or Basidiomycete fungus, specifically the mycelium of Lentinula edodes and / or button mushrooms. Preferably, the fungus is Aspergillus oryzae.

[0068] Chitosan may be of genetically modified organism (GMO) origin, but is preferably of non-GMO origin.

[0069] The chitosan according to the present invention is natural, that is, unmodified. In particular, it contains no chemical modifications whatsoever.

[0070] One method for preparing chitosan is described in WO03 / 068824.

[0071] Preferably, the chitosan used in this invention is in powder form. It is commercially available from Glentham Life Science under the name GU3511.

[0072] The amount of (a) cationic polymer in the composition according to the present invention may be 0.01% by mass or more, preferably 0.05% by mass or more, and more preferably 0.1% by mass or more, based on the total mass of the composition.

[0073] The amount of (a) cationic polymer in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total mass of the composition.

[0074] The amount of (a) cationic polymer in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0075] (Non-polymeric acids with two or more acid dissociation constants) The composition according to the present invention comprises (b) a nonpolymeric acid or salt thereof having at least one pair of pKa values, i.e., a nonpolymeric acid or salt thereof having at least one pair of acid dissociation constants. The pKa value (acid dissociation constant) is well known to those skilled in the art and should be determined at a certain temperature, for example, 25°C.

[0076] (b) Nonpolymeric acids or salts thereof having two or more pKa values ​​may be included in (d) an aqueous phase containing water. Nonpolymeric acids having two or more pKa values ​​may (a) function as crosslinking agents for cationic polymers.

[0077] In this specification, the term "non-polymer" means that the acid is not obtained by polymerizing two or more monomers. Therefore, non-polymer acids do not correspond to acids obtained by polymerizing two or more monomers, such as polyacrylic acid.

[0078] (b) The molecular weight of the nonpolymeric acid or salt thereof having two or more pKa values ​​is preferably 1000 or less, preferably 800 or less, and more preferably 700 or less.

[0079] (b) The type of nonpolymer acid or salt thereof having two or more pKa values ​​is not limited. Two or more different types of (b) nonpolymer acids or salts thereof having two or more pKa values ​​may be used in combination. Therefore, a single type of (b) nonpolymer acid or salt thereof having two or more pKa values, or a combination of different types of (b) nonpolymer acids or salts thereof having two or more pKa values ​​may be used.

[0080] In this specification, the term "salt" means a salt formed by adding a suitable base to a nonpolymeric acid having two or more pKa values, which can be obtained by the reaction of a nonpolymeric acid having two or more pKa values ​​with a base according to methods known to those skilled in the art. Examples of salts include metal salts, such as salts with alkali metals like Na and K, and salts with alkaline earth metals like Mg and Ca, as well as ammonium salts.

[0081] The nonpolymeric acid or salt thereof having two or more pKa values ​​may be an organic acid or salt thereof, preferably a hydrophilic or water-soluble organic acid or salt thereof.

[0082] Nonpolymeric acids having two or more pKa values ​​may have at least two acid groups selected from the group consisting of carboxylic acid groups, sulfate groups, sulfonic acid groups, phosphoric acid groups, phosphonic acid groups, phenolic hydroxyl groups, and mixtures thereof.

[0083] The nonpolymeric acid having two or more pKa values ​​may be a nonpolymeric polyhydric acid such as phosphoric acid.

[0084] Nonpolymeric acids having two or more pKa values ​​can be selected from the group consisting of dicarboxylic acids, disulfonic acids, and diphosphates, as well as mixtures thereof.

[0085] (b) Nonpolymeric acids or salts thereof having two or more pKa values ​​include oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, fumaric acid, maleic acid, malic acid, citric acid, aconitic acid, oxaloacetate, tartaric acid, and salts thereof; aspartic acid, glutamic acid, and salts thereof; terephthalylidene dicamfersulfonic acid or salts thereof (Mexoryl SX), Benzophenone-9; Phytic acid and its salts; Red 2 (Amaranth), Red 102 (New Coccine), Yellow 5 (Tartrazine), Yellow 6 (Sunset Yellow FCF), Green 3 (Fast Green FCF), Blue 1 (Brilliant Blue FCF), Blue 2 (Indigo Carmine), Red 201 (Lysol Rubin B), Red 202 (Lysol Rubin BCA), Red 204 (Lake Red CBA), Red 206 (Lysol Red CA), Red 207 (Lysol Red BA), Red 208 (Lysol Red SR), Red 219 (Brilliant Lake Red R), Red 220 (Deep Maroon), Red 227 (Fast Acid Magenta), Yellow 203 (Quinoline Yellow W) S), Green 201 (Alizarin Cyanine Green F), Green 204 (Pyranine Concentrate), Green 205 (Light Green SF Yellow), Blue 203 (Patent Blue CA), Blue 205 (Alphazrin FG), Red 401 (Violamin R), Red 405 (Permanent Red F5 R), Red 502 (Ponceau 3 R), Red 503 (Ponceau R), Red 504 (Ponceau SX), Green 401 (Naphthol Green B), Green 402 (Guinea Green B), and Black 401 (Naphthol Blue Black); folic acid, ascorbic acid, erythorbic acid, and salts thereof; cystine and its salts; EDTA and its salts; glycyrlysine and its salts; and mixtures thereof may be selected from the group.

[0086] (b) It may be preferable that the nonpolymeric acid or salt thereof having two or more pKa values ​​is selected from the group consisting of terephthalylidene dicamphor sulfonic acid and its salts (Mexoryl SX), Yellow No. 6 (Sunset Yellow FCF), ascorbic acid, phytic acid and their salts, and mixtures thereof.

[0087] (b) The nonpolymeric acid or salt thereof having two or more pKa values ​​may be an organic acid or salt thereof, preferably a hydrophilic or water-soluble organic acid or salt thereof, more preferably phytic acid or salt thereof.

[0088] The amount of (b) a nonpolymeric acid or salt thereof having two or more pKa values ​​in the composition according to the present invention may be 0.001% by mass or more, preferably 0.003% by mass or more, and more preferably 0.005% by mass or more, based on the total mass of the composition.

[0089] The amount of (b) a nonpolymeric acid or salt thereof having two or more pKa values ​​in the composition according to the present invention may be 10% by mass or less, preferably 5% by mass or less, and more preferably 1% by mass or less, based on the total mass of the composition.

[0090] The amount of (b) a nonpolymeric acid or salt thereof having two or more pKa values ​​in the composition according to the present invention may be 0.001% to 10% by mass, preferably 0.003% to 5% by mass, and more preferably 0.005% to 1% by mass, based on the total mass of the composition.

[0091] (Anionic polymer) The composition according to the present invention comprises (c) at least one anionic polymer. A single type of anionic polymer may be used, or two or more different types of anionic polymers may be used in combination.

[0092] The anionic polymer has a negative charge density. (c) If the anionic polymer is a synthetic anionic polymer, the charge density of the anionic polymer may be 0.1 meq / g to 20 meq / g, preferably 1 meq / g to 15 meq / g, more preferably 4 meq / g to 10 meq / g, and (c) if the anionic polymer is a natural anionic polymer, the average degree of substitution of the anionic polymer may be 0.1 to 3.0, preferably 0.2 to 2.7, more preferably 0.3 to 2.5.

[0093] (c) The molecular weight of the anionic polymer is preferably 1,000 or more, more preferably 2,000 or more, more preferably 5,000 or more, more preferably 10,000 or more, more preferably 50,000 or more, more preferably 100,000 or more, and more preferably 1,000,000 or more.

[0094] Unless otherwise defined in the explanation, "molecular weight" can refer to the mass-average molecular weight.

[0095] (c) The anionic polymer may have at least one negatively charged group selected from the group consisting of sulfate groups, sulfate groups, sulfonic acid groups, sulfonate groups, phosphoric acid groups, phosphate groups, phosphonic acid groups, phosphonate groups, carboxylic acid groups, and carboxylate groups, and / or may have a negatively charged moiety.

[0096] (c) The anionic polymer may be a homopolymer or a copolymer. The term "copolymer" is understood to mean both copolymers obtained from two monomers and terpolymers obtained from more than two monomers, for example, three monomers.

[0097] (c) The anionic polymer can be selected from natural and synthetic anionic polymers, preferably natural anionic polymers.

[0098] (c) The anionic polymer may contain at least one hydrophobic chain.

[0099] (c) Anionic polymers, which may contain at least one hydrophobic chain, can be obtained by copolymerizing a monomer (i) selected from a carboxylic acid (monomer i') containing α,β-ethylenically unsaturated compounds and 2-acrylamido-2-methylpropanesulfonic acid (monomer i") with a non-surface-active monomer (ii) containing ethylenically unsaturated compounds other than (i), and / or an acrylic monomer containing α,β-monoethylenically unsaturated compounds or an isocyanate monomer containing monoethylenically unsaturated compounds, with a monovalent nonionic amphiphilic component or a primary or secondary fatty amine to obtain a monomer (iii) containing ethylenically unsaturated compounds.

[0100] Therefore, (c) anionic polymers having at least one hydrophobic chain can be synthesized via two routes: - Copolymerization of monomers (i') and (iii), or (i'), (ii) and (iii), or (i") and (iii), or (i"), (ii) and (iii), - Modifying (especially esterification or amidation) a monomer (i'), or a copolymer formed from monomers (i') and (ii), or (i") and (ii), with a monovalent nonionic amphiphilic compound or a primary or secondary fatty amine. It can be obtained by one of the following methods.

[0101] Examples of 2-acrylamido-2-methylpropanesulfonic acid copolymers include those disclosed in the paper "Micelle formation of random copolymers of sodium 2-(acrylamido)-2-methylpropanesulfonate and nonionic surfactant macromonomer in water as studied by fluorescence and dynamic light scattering - Macromolecules, 2000, Vol. 33, No. 10, pp. 3694-3704" and applications EP-A-0750899 and EP-A-1069172.

[0102] The carboxylic acid containing α,β-monoethylenically unsaturated compounds that constitute monomer (i') can be selected from a number of acids, particularly acrylic acid, methacrylic acid, crotonic acid, itaconic acid, and maleic acid. Preferably, this is acrylic acid or methacrylic acid.

[0103] The copolymer may contain monomers (ii) that have monoethylenically unsaturated properties but do not possess surfactant properties. Preferred monomers are those that yield a water-insoluble polymer when homopolymerized. These can be selected from, for example, acrylic acids and alkyl (C1-C4) methacrylates, such as methyl acrylate, ethyl acrylate, butyl acrylate, or the corresponding methacrylate. More specifically preferred monomers are methyl acrylate and ethyl acrylate. Other monomers that can be used are, for example, styrene, vinyltoluene, vinyl acetate, acrylonitrile, and vinylidene chloride. Non-reactive monomers are preferred, in which a single ethylenic group is the only group that is reactive under polymerization conditions. However, monomers containing a group that reacts under the action of heat, such as hydroxyethyl acrylate, can be optionally used.

[0104] Monomer (iii) is obtained by reacting an acrylic monomer containing α,β-monoethylene unsaturated compounds, such as (i), or an isocyanate monomer containing monoethylene unsaturated compounds, with a monovalent nonionic amphiphilic compound or a primary or secondary fatty amine.

[0105] Monovalent nonionic amphiphilic compounds or primary or secondary fatty amines used to produce nonionic monomers (iii) are well known. Monovalent nonionic amphiphilic compounds are generally alkoxylated hydrophobic compounds containing alkylene oxides that form the hydrophilic portion of the molecule. Hydrophobic compounds are generally composed of aliphatic alcohols or alkylphenols, and a carbon chain containing at least six carbon atoms in the compound constitutes the hydrophobic portion of the amphiphilic compound.

[0106] A preferred monovalent nonionic amphiphilic compound is a compound having the following formula (V): R-(OCH2CHR') m -(OCH2CH2) n -OH (V) (In the formula, R is selected from alkyl or alkylene groups containing 6 to 30 carbon atoms, and alkylaryl groups having alkyl groups containing 8 to 30 carbon atoms; R' is selected from alkyl groups containing 1 to 4 carbon atoms; n is an average number in the range of approximately 1 to 150; and m is an average number in the range of approximately 0 to 50, provided that n is at least the same magnitude as m).

[0107] Preferably, in the compound of formula (V), the R group is an alkyl group containing 12 to 26 carbon atoms and the alkyl group is C8-C 13 The alkylphenyl group is selected from the R' group, the R' group is a methyl group, m=0, and n=1 to 25.

[0108] Preferred primary and secondary fatty amines consist of one or two alkyl chains containing 6 to 30 carbon atoms.

[0109] The monomer used to form the nonionic urethane monomer (iii) can be selected from a wide variety of compounds. Any compound containing copolymerizable unsaturated compounds, such as acrylic, methacrylic, or allyl unsaturated compounds, can be used. Monomer (iii) can be obtained, in particular, from isocyanates containing monoethylene unsaturated compounds, such as α,α-dimethyl-m-isopropenylbenzyl isocyanate.

[0110] Monomer (iii) is particularly involved in oxyethylene (1 to 50 EO) C6~C 30 Acrylates, methacrylates, or itaconates of aliphatic alcohols, such as steareth-20 methacrylate, oxyethylene-(25EO)behenyl methacrylate, oxyethylene-(20EO)monocetyl itaconate, oxyethylene-(20EO)monostealyl itaconate, or polyoxyethylene-(25EO)C 12 ~C 24 From alcohol-modified acrylates, and oxyethylene (1 to 50 EO) C6~C 30 Dimethyl-m-isopropenylbenzyl isocyanates of aliphatic alcohols can be selected, for example, particularly dimethyl-m-isopropenylbenzyl isocyanates of oxyethylene-behenyl alcohols.

[0111] According to a particular embodiment of the present invention, (c) the anionic polymer is selected from (i) carboxylic acids containing α,β-ethylenically unsaturated compounds, (ii) non-surface-active monomers containing ethylenically unsaturated compounds other than those in (i), and (iii) acrylic polymers obtained from nonionic urethane monomers which are reaction products of a monovalent nonionic amphiphilic compound and an isocyanate containing monoethylenically unsaturated compounds.

[0112] Examples of the (c) anionic polymer containing at least one hydrophobic chain include, in particular, acrylic acid / ethyl acrylate / alkyl acrylate terpolymers, such as the product sold under the name Acusol 823 (a 30% aqueous dispersion) by Rohm & Haas; acrylate / stearyl methacrylate-20 copolymer, such as the product sold under the name Aculyn 22 by Rohm & Haas; (meth)acrylic acid / ethyl acrylate / oxyethylenated (25 EO) behenyl methacrylate terpolymer, such as the product sold as an aqueous emulsion under the name Aculyn 28 by Rohm & Haas; acrylic acid / oxyethylenated (20 EO) monocethyl itaconate copolymer, such as the product sold as a 30% aqueous dispersion under the name Structure 3001 by National Starch; acrylic acid / oxyethylenated (20 EO) monostearyl itaconate copolymer, such as the product sold as a 30% aqueous dispersion under the name Structure 2001 by National Starch; acrylate / polyoxyethylenated (25 EO)C 12 ~C 24 copolymer of acrylate modified with alcohol, such as a 30 - 32% copolymer latex sold under the name Synthalen W2000 by 3V SA; or a terpolymer of methacrylic acid / methyl acrylate / ethoxylated behenyl alcohol dimethyl - meth - isopropenylbenzyl isocyanate, such as the product sold as a 24% aqueous dispersion containing 40 ethylene oxide groups disclosed in document EP - A - 0173109.

[0113] (c) The anionic polymer may also be a polyester - 5, for example, a product sold under the name Eastman AQ™ 55S Polymer by EASTMAN CHEMICAL, which has the following chemical formula.

[0114] [Chemical formula]

[0115] A: Dicarboxylic acid portion G: Glycol portion SO3 - Na + : Sodium sulfo group OH: Hydroxyl group

[0116] (c) It may be preferable that the anionic polymer is selected from the group consisting of polysaccharides, such as alginic acid, hyaluronic acid, xanthan gum, and cellulose polymers (e.g., carboxymethylcellulose), anionic (co)polyamino acids, such as (co)polyglutamic acid, (co)poly(meth)acrylic acid, (co)polyamic acid, (co)polystyrene sulfonate, (co)poly(vinyl sulfate), dextran sulfate, chondroitin sulfate, (co)polymaleic acid, (co)polyfumaric acid, maleic acid (co)polymer, and salts thereof (e.g., sodium carboxymethylcellulose or cellulose gum).

[0117] The maleic acid copolymer may comprise one or more maleic acid comonomers, as well as one or more comonomers selected from vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins containing 2 to 20 carbon atoms, and styrene.

[0118] Therefore, "maleic acid copolymer" is understood to mean any polymer obtained by copolymerizing one or more maleic acid comonomers with one or more comonomers selected from vinyl acetate, vinyl alcohol, vinylpyrrolidone, olefins containing 2 to 20 carbon atoms, such as octadecene, ethylene, isobutylene, diisobutylene or isooctylene, and styrene, wherein the maleic acid comonomers are optionally partially or completely hydrolyzed. Preferably, hydrophilic polymers, i.e., polymers having a water solubility of 2 g / l or more, are used.

[0119] In an advantageous embodiment of the present invention, the maleic acid copolymer may have a mole fraction of maleic acid units between 0.1 and 1, more preferably between 0.4 and 0.9.

[0120] The mass-average molar mass of the maleic acid copolymer may be between 1,000 and 500,000, preferably between 1,000 and 50,000.

[0121] The maleic acid copolymer is preferably a styrene / maleic acid copolymer, and more preferably a sodium styrene / maleic acid copolymer.

[0122] Preferably, a copolymer of styrene and maleic acid in a 50 / 50 ratio is used.

[0123] For example, styrene / maleic acid (50 / 50) copolymer in the form of an ammonium salt at 30% in water, sold by Cray Valley under the reference name SMA1000H®, or styrene / maleic acid (50 / 50) copolymer in the form of a sodium salt at 40% in water, sold by Cray Valley under the reference name SMA1000HNa®, may be used.

[0124] The use of styrene / maleic acid copolymers, such as sodium styrene / maleic acid copolymer, can improve the wettability of films prepared by the compositions according to the present invention.

[0125] In a preferred embodiment, (c) the anionic polymer can be selected from hyaluronic acid, its salts (e.g., sodium hyaluronate), and its derivatives.

[0126] Hyaluronic acid can be represented by the following chemical formula:

[0127] [ka]

[0128] In the context of this invention, the term "hyaluronic acid" specifically includes the basic unit of hyaluronic acid as shown in the following formula.

[0129] [ka]

[0130] This is the smallest fraction of hyaluronic acid containing disaccharide dimers, namely D-glucuronic acid and N-acetylglucosamine.

[0131] The term "hyaluronic acid and its derivatives" also, in the context of the present invention, includes linear polymers comprising the above polymer units linked together in the chain via alternating β(1,4) and β(1,3) glucosidic bonds, having a molecular weight (MW) that can range between 380 and 13,000,000 daltons. This molecular weight depends primarily on the source from which the hyaluronic acid is obtained and / or the method of preparation.

[0132] The term "hyaluronic acid and its derivatives" also includes hyaluronic acid salts in the context of this invention. Examples of salts include alkali metal salts such as sodium salts and potassium salts, alkaline earth metal salts such as magnesium salts, ammonium salts, and mixtures thereof.

[0133] In its natural state, hyaluronic acid is present in the pericellular gel within the connective tissue substrate of vertebrate organs, such as the dermis and epithelial tissue. Specifically, it is found in the epidermis, synovial fluid of joints, vitreous fluid, human umbilical cord, and cockscomb process.

[0134] Therefore, the term "hyaluronic acid and its derivatives" includes all fractions or subunits of hyaluronic acid having molecular weights within the molecular weight range recalled above.

[0135] In the context of the present invention, a hyaluronic acid fraction that does not have inflammatory activity is preferably used.

[0136] For examples of various hyaluronic acid fractions, refer to the document "Hyaluronan fragments: an information-rich system" by R. Stern et al., European Journal of Cell Biology 58 (2006), pp. 699-715, which outlines the listed biological activities of hyaluronic acid according to its molecular weight.

[0137] According to a preferred embodiment of the present invention, the hyaluronic acid fraction suitable for use, as encompassed by the present invention, has a molecular weight between 50,000 Da and 5,000,000 Da, particularly between 100,000 Da and 5,000,000 Da, and especially between 400,000 Da and 5,000,000 Da. In this case, the term used is high molecular weight hyaluronic acid.

[0138] Alternatively, a hyaluronic acid fraction that may be suitable for use as encompassed by the present invention has a molecular weight between 50,000 Da and 400,000 Da. In this case, the term used is intermediate molecular weight hyaluronic acid.

[0139] Furthermore, a hyaluronic acid fraction that may be suitable for use as encompassed in the present invention has a molecular weight of less than 50,000 Da. In this case, the term used is low molecular weight hyaluronic acid.

[0140] Finally, the term “hyaluronic acid and its derivatives” also includes hyaluronic acid esters, specifically those containing 1 to 20 carbon atoms, in particular those with a degree of substitution at the D-glucuronic acid level of hyaluronic acid ranging from 0.5 to 50%, in which all or part of the carboxylic acid groups of the acidic functional group are esterified with an oxyethylene alkyl or alcohol.

[0141] In particular, methyl, ethyl, n-propyl, n-pentyl, benzyl, and dodecyl esters of hyaluronic acid can be mentioned. Such esters are described in detail in D. Campoccia et al., "Semisynthetic resorbable materials from hyaluronan esterification," Biomaterials 19 (1998), pp. 2101-2127.

[0142] The hyaluronic acid derivative may be, for example, acetylated hyaluronic acid or a salt thereof.

[0143] The molecular weights shown above are also effective for hyaluronic acid esters.

[0144] Specifically, hyaluronic acid is sold by Hyactive under the brand name CPN (MW: 10-150kDa) and by Soliance under the brand name Cristalhyal (MW: 1.1×10 6 This could be hyaluronic acid supplied by Bioland under the name Nutra HA (MW: 820,000 Da), by Bioland under the name Nutra AF (MW: 69,000 Da), by Bioland under the name Oligo HA (MW: 6100 Da), or by Vam Farmacos Metica under the name D Factor (MW: 380 Da).

[0145] The amount of (c) anionic polymer in the composition according to the present invention may be 0.01% by mass or more, preferably 0.05% by mass or more, and more preferably 0.1% by mass or more, based on the total mass of the composition.

[0146] The amount of (b) anionic polymer in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total mass of the composition.

[0147] The amount of (c) anionic polymer in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

[0148] (water) The composition according to the present invention comprises (d) water.

[0149] (d) Water can constitute an aqueous phase in the composition according to the present invention, which may be a dispersed phase or a discontinuous phase.

[0150] (d) The amount of water may be 10% by mass or more, preferably 15% by mass or more, and more preferably 20% by mass or more, based on the total mass of the composition.

[0151] (d) The amount of water may be 50% by mass or less, preferably 45% by mass or less, and more preferably 40% by mass or less, based on the total mass of the composition.

[0152] (d) The amount of water may be 10% to 50% by mass, preferably 15% to 45% by mass, and more preferably 20% to 40% by mass, based on the total mass of the composition.

[0153] (oil) The composition according to the present invention comprises (e) at least one oil. If two or more (e) oils are used, they may be the same or different.

[0154] (e) The oil can constitute a fatty phase in the composition according to the present invention, which may be a continuous phase.

[0155] Here, "oil" refers to fatty compounds or fatty substances that are in liquid or paste (non-solid) form at atmospheric pressure (760 mmHg) and room temperature (25°C). Oils commonly used in cosmetics can be used alone or in combination. These oils may be volatile or non-volatile.

[0156] (e) The oil may be a non-polar oil such as hydrocarbon oil or silicone oil; a vegetable oil or animal oil, or a polar oil such as ester oil or ether oil; or a mixture thereof.

[0157] (e) The oil may be selected from the group consisting of plant or animal oils, synthetic oils, silicone oils, hydrocarbon oils and aliphatic alcohols.

[0158] Examples of vegetable oils include, for instance, apricot oil, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, camellia oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0159] Examples of animal oils include, for instance, squalene and squalane.

[0160] Examples of synthetic oils include alkane oils, such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.

[0161] Ester oils are preferably saturated or unsaturated, linear or branched C1-C123. 26 Aliphatic monoacid or polyacid and saturated or unsaturated linear or branched C1-C12 chains. 26 It is a liquid ester of an aliphatic monoalcohol or polyalcohol, and the total number of carbon atoms in these esters is 10 or more.

[0162] Preferably, in the case of a monoalcohol ester, at least one of the alcohols and acids from which the ester of the present invention is derived is branched.

[0163] Among monoesters of monoacids and monoalcohols, examples include ethyl palmitate, ethylhexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristate, for example isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, and isostearyl neopentanoate.

[0164] C4~C 22 Dicarboxylic acid or tricarboxylic acid and C1-C 22 Esters with alcohols, and non-sugars C4-C with monocarboxylic acids, dicarboxylic acids, or tricarboxylic acids. 26 Esters with dihydroxy, trihydroxy, tetrahydroxy, or pentahydroxy alcohols can also be used.

[0165] In particular, diethyl sebacate, isopropyl lauroyl sarcosinate, diisopropyl sebacate, bis(2-ethylhexyl) sebacate, diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, bis(2-ethylhexyl) adipate, diisostearyl adipate, bis(2-ethylhexyl) maleate, triisopropyl citrate, triisocetyl citrate, triisostearyl citrate, glyceryl trilactic acid, glyceryl trioctanoate, trioctyldodecyl citrate, trioleyl citrate, neopentyl glycol diheptanoate, and diethylene glycol diisononanoate can be mentioned.

[0166] As ester oils, C6~C 30 Preferably C 12 ~C 22 Fatty acid sugar esters and diesters can be used. The term "sugar" is meant to refer to an oxygen-containing hydrocarbon compound containing several alcoholic functional groups, having or not having aldehyde or ketone functional groups, and containing at least four carbon atoms. These sugars may be monosaccharides, oligosaccharides, or polysaccharides.

[0167] Suitable examples of sugars that can be listed include sucrose (or sucrose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, and lactose, as well as their derivatives, in particular alkyl derivatives, such as methyl derivatives, for example, methyl glucose.

[0168] Fatty acid sugar esters, in particular, consist of the sugars described above and linear or branched saturated or unsaturated C6-C6 fatty acids. 30 Preferably C 12 ~C 22 The group can be selected from those comprising esters or mixtures of esters with fatty acids. If they are unsaturated, these compounds may have 1 to 3 conjugated or unconjugated carbon-carbon double bonds.

[0169] Esters in this modified form can also be selected from monoesters, diesters, triesters, tetraesters, and polyesters, as well as mixtures thereof.

[0170] These esters may be, for example, oleic acid esters, lauric acid esters, palmitic acid esters, myristic acid esters, behenic acid esters, coconut fatty acid esters, stearic acid esters, linoleic acid esters, linolenic acid esters, capric acid esters and arachidonic acid esters, or mixtures thereof, for example, particularly mixed esters of oleopalmitic acid, oleostearic acid and palmitostearic acid, and pentaerythrityl tetraethylhexanoate.

[0171] More specifically, monoesters and diesters, particularly monooleates or dioleates of sucrose, glucose or methyl glucose, stearates, behenates, oleopalmitates, linoleates, linolenicates and oleostearates are used.

[0172] One example that can be cited is the product sold by Amerchol under the name Glucate(registered trademark)DO, which is methyl glucose dioleate.

[0173] Examples of preferred ester oils include, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyl propionate, 2-ethylhexyl 2-ethylhexanoate, 2-ethylhexyl octanoate, 2-ethylhexyl caprylic / capric acid, methyl palmitate, ethyl palmitate, isopropyl palmitate, and dicaprate. Examples include lylyl, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythrityl tetra(2-ethylhexanoate), ethylhexyl succinate, diethyl sebacate, and mixtures thereof.

[0174] Examples of artificial triglycerides include, for example, caprylcaprylyl glyceride, glyceryl trimyristicate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, glyceryl tri(caprate / caprylic acid) glyceryl, and glyceryl tri(caprate / caprylic acid / linolenic acid) glyceryl.

[0175] Examples of silicone oils include, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; and mixtures thereof.

[0176] Preferably, the silicone oil is selected from liquid polydialkylsiloxanes, particularly liquid polydimethylsiloxane (PDMS), and liquid polyorganosiloxanes containing at least one aryl group.

[0177] These silicone oils may also be organically modified. Organically modified silicones that can be used according to the present invention are silicone oils as defined above, which contain one or more organic functional groups linked via hydrocarbon groups in their structure.

[0178] Organopolysiloxanes are defined in more detail in Walter Noll's *Chemistry and Technology of Silicones* (1968), Academic Press. They may be volatile or non-volatile.

[0179] If they are volatile, silicones are selected from those having boiling points between 60°C and 260°C, and more specifically, from the following: (i) Cyclic polydialkylsiloxanes containing 3 to 7, preferably 4 to 5, silicon atoms. These include, for example, octamethylcyclotetrasiloxane, sold by Union Carbide under the name Volatile Silicone® 7207, or by Rhodia under the name Silbione® 70045 V2; decamethylcyclopentasiloxane, sold by Union Carbide under the name Volatile Silicone® 7158, by Rhodia under the name Silbione® 70045 V5; and dodecamethylcyclopentasiloxane, sold by Momentive Performance Materials under the name Silsoft 1217, as well as mixtures thereof. Cyclocopolymers of the type such as dimethylsiloxane / methylalkylsiloxane, for example, Silicone Volatile® FZ 3109, sold by Union Carbide.

[0180] [ka]

[0181] Other examples include mixtures of cyclic polydialkylsiloxanes and organosilicon compounds, such as a mixture of octamethylcyclotetrasiloxane and tetratrimethylsilylpentaerythritol (50 / 50), and a mixture of octamethylcyclotetrasiloxane and oxy-1,1'-bis(2,2,2',2',3,3'-hexatrimethylsilyloxy)neopentane. (ii) Contains 2 to 9 silicon atoms and is 5 × 10 at 25°C -6 m 2Linear volatile polydialkylsiloxanes with a viscosity of less than 1 / s. An example is decamethyltetrasiloxane, sold by Toray Silicone under the name SH 200. Silicones belonging to this category are also described in the paper published in Cosmetics and Toiletries, Vol. 91, January 1976, pp. 27-32, by Todd & Byers, in Volatile Silicone Fluids for Cosmetics. The viscosity of silicones is measured at 25°C according to ASTM Standard 445 Appendix C.

[0182] Non-volatile polydialkylsiloxanes may also be used. More specifically, these non-volatile silicones are selected from polydialkylsiloxanes, among which polydimethylsiloxanes containing trimethylsilyl terminal groups are the most common.

[0183] Among these polydialkylsiloxanes, the following commercially available products can be listed without limitation: - Silbione® oils 47 and 70 047 series or Mirasil® oils sold by Rhodia, for example, 70 047 V 500 000 oil. - Mirasil® series oils sold by Rhodia, - Dow Corning's 200 series oil, for example, with a viscosity of 60,000 mmHg 2 DC200 is / s, and - Viscasil® oil manufactured by General Electric, and certain oils in the SF series manufactured by General Electric (SF 96, SF 18).

[0184] Polydimethylsiloxanes containing dimethylsilanol terminal groups, known by the name dimethiconol (CTFA), such as the 48 series oils from Rhodia, can also be mentioned.

[0185] Among silicones containing aryl groups, examples include polydiarylsiloxanes, particularly polydiphenylsiloxanes and polyalkylarylsiloxanes, such as phenylsilicone oil.

[0186] The phenylsilicone oil may be selected from the following phenylsilicones:

[0187] [ka]

[0188] (In the formula, R1 to R 10 These are, independently of each other, saturated or unsaturated, linear, cyclic or branched C1-C12 30 Hydrocarbon groups, preferably C1-C 12 A hydrocarbon group, more preferably a C1-C6 hydrocarbon group, particularly a methyl, ethyl, propyl, or butyl group. m, n, p, and q are independent integers between 0 and 900, preferably between 0 and 500, and more preferably between 0 and 100, including the endpoints. However, the sum n+m+q is not 0.

[0189] Examples that can be given include products sold under the following names: - Silbione® oil 70 641 series manufactured by Rhodia, - Rhodorsil® 70 633 series and 763 series oils manufactured by Rhodia. - Dow Corning 556 Cosmetic Grade Fluid oil manufactured by Dow Corning, - Bayer's PK series silicones, for example, product PK20, - Specific oils from General Electric's SF series, such as SF 1023, SF 1154, SF 1250, and SF 1265.

[0190] As phenyl silicone oil, phenyl trimethicone (in the above formula, R1 to R 10 (where is methyl, and p, q, and n = 0, and m = 1) is preferred.

[0191] Organically modified liquid silicones may, in particular, contain polyethylene oxy groups and / or polypropylene oxy groups. Examples include silicone KF-6017 proposed by Shin-Etsu Chemical Co., Ltd., and Silwet® L722 and L77 oils manufactured by Union Carbide.

[0192] Hydrocarbon oils can be selected from the following: - Linear or branched, optionally cyclic C6-C 16 Or C9~C 12 Lower alkanes. Examples that can be given include hexane, undecane, dodecane, tridecane, and isoparaffins, examples of which include isohexadecane, isododecane, and isodecane; and - Linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffin, liquid petroleum jelly, polydecene and hydrogenated polyisobutene, such as Parleam®, and squalane.

[0193] Preferred examples of hydrocarbon oils include, for example, linear or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oil (e.g., liquid paraffin), paraffin, petrolatum or petrolatum, naphthalene, etc.; hydrogenated polyisobutene, isoeicosane, and decene / butene copolymers; and mixtures thereof.

[0194] The term "fatty" in aliphatic alcohols refers to the inclusion of a relatively large number of carbon atoms. Therefore, alcohols having four or more, preferably six or more, and more preferably twelve or more carbon atoms are included in the range of aliphatic alcohols. Aliphatic alcohols may be saturated or unsaturated. Aliphatic alcohols may be linear or branched.

[0195] Aliphatic alcohols may have the structure R-OH (wherein R is selected from saturated and unsaturated linear and branched groups containing 4 to 40 carbon atoms, preferably 6 to 30 carbon atoms, more preferably 12 to 20 carbon atoms). In at least one embodiment, R is C 12 ~C 20 Alkyl and C 12 ~C 20 It can be selected from alkenyl groups. R may or may not be substituted with at least one hydroxyl group.

[0196] Examples of aliphatic alcohols include lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, oleyl alcohol, linoleyl alcohol, palmitrail alcohol, arachidonyl alcohol, erucyl alcohol, and mixtures thereof.

[0197] The aliphatic alcohol is preferably a saturated aliphatic alcohol.

[0198] Therefore, aliphatic alcohols are linear or branched, saturated or unsaturated C6-C6. 30 Alcohols, preferably linear or branched, saturated C6-C6 compounds. 30 Alcohol, more preferably linear or branched saturated C 12 ~C 20 Alcohol can be selected.

[0199] The term "saturated aliphatic alcohol" as used herein means an alcohol having a long aliphatic saturated carbon chain. A saturated aliphatic alcohol is any linear or branched, saturated C6-C6 alcohol. 30 Preferably selected from aliphatic alcohols. Linear or branched, saturated C6-C6 30 Among aliphatic alcohols, linear or branched saturated C12 ~C 20 Aliphatic alcohols may preferably be used. Any linear or branched saturated C 16 ~C 20 Aliphatic alcohols may be used more preferably. Branched C 16 ~C 20 Aliphatic alcohols may be used more more preferably.

[0200] Examples of saturated aliphatic alcohols include lauryl alcohol, cetyl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, and mixtures thereof. In one embodiment, cetyl alcohol, stearyl alcohol, octyldodecanol, hexyldecanol, or mixtures thereof (e.g., cetearyl alcohol) and behenyl alcohol can be used as saturated aliphatic alcohols.

[0201] According to at least one embodiment, the aliphatic alcohol used in the composition according to the present invention is preferably selected from octyldodecanol, hexyldecanol, and mixtures thereof.

[0202] (e) The oil may preferably be selected from hydrocarbon oils, ester oils, and mixtures thereof.

[0203] The amount of (e) oil in the composition according to the present invention may be 10% by mass or more, preferably 15% by mass or more, and more preferably 20% by mass or more, based on the total mass of the composition.

[0204] The amount of (e) oil in the composition according to the present invention may be 50% by mass or less, preferably 45% by mass or less, and more preferably 40% by mass or less, based on the total mass of the composition.

[0205] The amount of (e) oil in the composition according to the present invention may be 10% to 50% by mass, preferably 15% to 45% by mass, and more preferably 20% to 40% by mass, based on the total mass of the composition.

[0206] (First powder) The composition according to the present invention comprises (i) at least one inorganic oxide and (ii) at least one fatty acid or a salt thereof, and (f) at least one first powder. If two or more first powders are used, they may be the same or different.

[0207] (f) The first powder is preferably a solid at room temperature (25°C) and atmospheric pressure (101325 Pa). The term "solid" as used herein means a substance that does not have fluidity under its own mass, as opposed to a fluid.

[0208] (f) The first powder may consist of particles having a diameter in the range of 1 μm to 40 μm, preferably 2 μm to 30 μm, and more preferably 3 μm to 20 μm. In this specification, particle size means average (primary) particle size or average (primary) particle diameter.

[0209] The (primary) particle size can be measured, for example, by extracting it from a photographic image obtained by SEM or the like using a particle size analyzer, such as a laser diffraction particle size analyzer. It is preferable to use a particle size analyzer such as a laser diffraction particle size analyzer. In this case, the (primary) particle size is the volume-average (primary) particle size.

[0210] (f) The first powder contains (i) at least one inorganic oxide.

[0211] Examples of inorganic oxides include nonmetallic oxides such as silica and metal oxides. Preferably, the inorganic oxide is a metal oxide. Preferably, the metal oxide is an alkaline earth metal oxide, a transition metal oxide, or a mixture thereof. Examples of metal oxides include magnesium oxide, titanium dioxide, iron oxide, and mixtures thereof. It is more preferable that the metal oxide is magnesium oxide.

[0212] Therefore, (i) the inorganic oxide is preferably a metal oxide, more preferably an alkaline earth metal oxide, and even more preferably magnesium oxide.

[0213] (f) The first powder contains (ii) at least one fatty acid or a salt thereof.

[0214] In this specification, the term "fatty acid" refers to a carboxylic acid having a long chain of aliphatic carbons.

[0215] Fatty acids have at least 4 carbon atoms, preferably at least 6 carbon atoms, more preferably at least 8 carbon atoms. Fatty acids may contain up to 26 carbon atoms, preferably up to 24 carbon atoms, more preferably up to 22 carbon atoms. Fatty acids are C4~C 26 Fatty acids, more like C6~C 24 Fatty acids, more preferably C8-C 22 It is preferable to select from fatty acids.

[0216] Fatty acids can be selected from saturated or unsaturated, linear or branched fatty acids. Therefore, fatty acids are C4-C 26 Preferably C6~C 24 , more preferably C8~C 22 They may be selected from saturated and unsaturated linear or branched fatty acids.

[0217] As unsaturated linear or branched fatty acids, monounsaturated linear or branched fatty acids or polyunsaturated linear or branched fatty acids may be used. Examples of the unsaturated portion of unsaturated linear or branched fatty acids include carbon-carbon double bonds or carbon-carbon triple bonds.

[0218] Examples of saturated fatty acids include caprylic acid (C8), pelargonic acid (C9), and capric acid (C8). 10 ), lauric acid (C 12 ), myristic acid (C 14 ), pentadecanoic acid (C 15 ), palmitic acid (C 16 ), heptadecanoic acid (C 17 ), stearic acid (C 18 ), isostearic acid (C 18 ), nonadecanoic acid (C 19 ), arachidic acid (C 20 ), behenic acid (C 22 ), and lignoceric acid (C 24 ) can be cited.

[0219] Examples of unsaturated fatty acids include myristoleic acid (C 14 ), palmitoleic acid (C 16 ), oleic acid (C 18 ), linoleic acid (C 18 ), linolenic acid (C 18 ), elaidic acid (C 18 ), arachidonic acid (C 20 ), eicosenoic acid (C 20 ), erucic acid (C 22 ), and nervonic acid (C 24 ) can be cited.

[0220] Fatty acids are C8~C 20 Saturated or unsaturated linear or branched fatty acids, more preferably C8-C8. 16 Saturated linear or branched fatty acids, more preferably C 10 ~C 14 A saturated, linear fatty acid, preferably selected from lauric acid, is preferred.

[0221] The fatty acid may be in the form of its free acid or its salt. Examples of the salt of the fatty acid include inorganic salts, preferably metal salts such as alkali metal salts (e.g., lithium salt, sodium salt, potassium salt, etc.), alkaline earth metal salts (e.g., magnesium salt, calcium salt, etc.), and other metal salts (e.g., aluminum salt, zinc salt, and barium salt); and organic salts such as ammonium salts (e.g., quaternary ammonium salts, etc.) and amine salts (e.g., triethanolamine salt, triethylamine salt, etc.). A single type of fatty acid salt or a combination of different types of fatty acid salts may be used. Further, a combination of one or more fatty acids in the form of the free acid and one or more fatty acids in the form of the salt can be used, and one or more types of salts can also be used.

[0222] The salt of the fatty acid is preferably selected from inorganic salts of the fatty acid, more preferably a metal salt of the fatty acid, and even more preferably a zinc salt of the fatty acid.

[0223] Therefore, (f) the first powder comprises: (i) at least one inorganic oxide, preferably a metal oxide, more preferably an alkaline earth metal oxide, and (ii) at least one fatty acid or its salt, preferably a saturated fatty acid or its salt, more preferably a metal salt of a saturated fatty acid.

[0224] The amount of (i) the inorganic oxide in (f) the first powder is not limited and may be 5% to 75% by mass based on the total mass of (f) the first powder.

[0225] The amount of (ii) the fatty acid or its salt in (f) the first powder is not limited and may be 95% to 25% by mass based on the total mass of (f) the first powder.

[0226] (f) In the first powder, (i) an inorganic oxide and (ii) a fatty acid or its salt may be complexed. For example, (f) the first powder may be made of a simple mixture of (i) an inorganic oxide and (ii) a fatty acid or its salt, or (i) core particles containing an inorganic oxide may be in the form of core-shell particles coated with (or vice versa) at least one coating layer containing (ii) a fatty acid or its salt.

[0227] In one embodiment, (f) the first powder contains at least one metal oxide and at least one saturated fatty acid or its salt, preferably at least one alkaline earth metal oxide and a metal salt of at least one saturated fatty acid, more preferably magnesium oxide and zinc laurate.

[0228] As (f) the first powder, for example, it is preferable to use zinc laurate (and) magnesium oxide commercially available from Kagawa Corporation.

[0229] The amount of (f) the first powder in the composition according to the present invention may be 0.01% by mass or more, preferably 0.05% by mass or more, more preferably 0.1% by mass or more, based on the total mass of the composition.

[0230] The amount of (f) the first powder in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, more preferably 5% by mass or less, based on the total mass of the composition.

[0231] The amount of (f) the first powder in the composition according to the present invention may be 0.01% by mass to 15% by mass, preferably 0.05% by mass to 10% by mass, more preferably 0.1% by mass to 5% by mass, based on the total mass of the composition.

[0232] (The second powder) The composition according to the present invention may contain (g) at least one second powder selected from the following: (i) particles containing silica and hydroxyapatite. When two or more second powders are used, they may be the same or different.

[0233] (g) The second powder is preferably a solid at room temperature (25°C) and atmospheric pressure (101325 Pa). The term "solid" as used herein means a substance that does not have fluidity under its own mass, as opposed to a fluid.

[0234] (g) The second powder may consist of particles having a diameter in the range of 1 μm to 30 μm, preferably 2 μm to 20 μm, and more preferably 3 μm to 10 μm. In this specification, particle size means average (primary) particle size or average (primary) particle diameter.

[0235] The (primary) particle size can be measured, for example, by extracting it from a photographic image obtained by SEM or the like using a particle size analyzer, such as a laser diffraction particle size analyzer. It is preferable to use a particle size analyzer such as a laser diffraction particle size analyzer. In this case, the (primary) particle size is the volume-average (primary) particle size.

[0236] (g) The second powder is selected from particles containing silica and hydroxyapatite.

[0237] (g) The second powder may be selected from hydroxyapatite-supported porous silica particles, in which hydroxyapatite is supported on the surface of spherical porous silica particles and on the inner surface of the pores of the spherical porous silica particles.

[0238] The term "surface" of spherical porous silica particles refers to the external shape of the spherical porous silica particles, i.e., the part that defines its outer surface. The term "inner surface of pores" of spherical porous silica particles refers to the part that defines the pores of the spherical porous silica particles. The term "supported" refers to the state in which hydroxyapatite is attached to or combined with the surface and inner surface of the pores of the spherical porous silica particles.

[0239] For example, from the viewpoint of improving tactile sensation, the roundness of the hydroxyapatite-supported porous silica particles may be 0.760 or higher, preferably 0.800 or higher, more preferably 0.820 or higher, even more preferably 0.850 or higher, and particularly preferably 0.900 or higher. There is no particular upper limit, but a roundness equal to 1 is most preferred.

[0240] The term "roundness" describes the degree of surface irregularity of hydroxyapatite-supported porous silica particles. As the roundness approaches 1, the degree of surface irregularity of the particles decreases, meaning the particles are closer to being true spheres.

[0241] The roundness of a particle can be calculated by examining the area and perimeter of the particle in an image captured by a particle image analysis instrument (for example, the "FPIA-3000S" manufactured by Sysmex Corporation), and then substituting these values ​​into the following formula using the image analysis software included with the instrument: Roundness = (Perimeter of circles with the same projected area) / (Perimeter of a particle) (In the formula, The perimeter of a circle with the same projected area: The length of the circle's outline, calculated as having the same area as the shadow cast by a particular particle on a plane under conditions determined when the particle is observed from directly above; Particle perimeter: The length of the outline of the shadow formed by the particle on a plane when the particle is observed from directly above.

[0242] The shape of the hydroxyapatite-supported porous silica particles is spherical or nearly spherical, and since the hydroxyapatite is supported on the particle surface, smoothness or the smooth feeling when applied to keratin substances such as skin can be improved. Further, the hydroxyapatite-supported porous silica particles may have a refractive index higher than that of silica itself. Further, since the hydroxyapatite is also supported on the inner surface of the pores, the adsorption of free fatty acids such as oleic acid can increase. Therefore, when the hydroxyapatite-supported porous silica particles are included in the composition according to the present invention, the particles can contribute to the control of sebum by the composition. In addition, by having silica as a base material, the hydroxyapatite-supported porous silica particles are environmentally compatible.

[0243] The amount of hydroxyapatite supported in the hydroxyapatite-supported porous silica particles may be 0.1% by mass or more, preferably 0.5% by mass or more, more preferably 1% by mass or more, based on the total mass of the particles.

[0244] The amount of hydroxyapatite supported in the hydroxyapatite-supported porous silica particles may be 50% by mass or less, preferably 40% by mass or less, more preferably 30% by mass or less, based on the total mass of the particles.

[0245] The amount of hydroxyapatite supported in the hydroxyapatite-supported porous silica particles may be 0.1% by mass to 50% by mass, preferably 0.5% by mass to 40% by mass, more preferably 1% by mass to 30% by mass, based on the total mass of the particles.

[0246] The amount of supported hydroxyapatite can be measured by high-frequency inductively coupled plasma atomic spectrometry (ICP-AES) using an ICP emission analyzer (for example, "ICPE-9000" (product name) manufactured by Shimadzu Corporation).

[0247] In hydroxyapatite-supported porous silica particles, the hydroxyapatite is supported on the surface of the spherical porous silica particles and on the inner surface of the pores of the spherical porous silica particles. That is, the hydroxyapatite is distributed on the surface and inside the spherical porous silica particles. Preferably, the hydroxyapatite is distributed almost uniformly on the surface of the particles and on the inner surface of the pores of the particles. Note that the expression "almost uniformly distributed" means that the hydroxyapatite is distributed almost uniformly on the surface of the spherical silica particles and on the inner surface of the pores of the spherical porous silica particles, without partial localization.

[0248] The fact that hydroxyapatite is supported on the surface of spherical porous silica particles can be confirmed from surface SEM images acquired by a scanning electron microscope (SEM).

[0249] In addition, the fact that hydroxyapatite is supported on the inner surface of the pores of spherical porous silica particles can be confirmed from cross-sectional SEM images acquired using SEM and cross-sectional EDX images acquired using EDX (energy-dispersive X-ray spectroscopy) (SEM-EDX).

[0250] The oil absorption capacity of the hydroxyapatite-supported porous silica particles may be 20 mL / 100 g or more, preferably 50 mL / 100 g or more, more preferably 100 mL / 100 g or more, and even more preferably 150 mL / 100 g or more.

[0251] On the other hand, the oil absorption value of the hydroxyapatite-supported porous silica particles may be 500 mL / 100 g or less, preferably 450 mL / 100 g or less, more preferably 400 mL / 100 g or less, and even more preferably 350 mL / 100 g or less.

[0252] Therefore, the oil absorption value of the hydroxyapatite-supported porous silica particles may be 20 mL / 100 g to 500 mL / 100 g, preferably 50 mL / 100 g to 450 mL / 100 g, more preferably 100 mL / 100 g to 400 mL / 100 g, and even more preferably 150 mL / 100 g to 350 mL / 100 g.

[0253] The oil absorption amount can be measured according to JIS K 5101-13-1 (2004).

[0254] Hydroxyapatite-supported porous silica particles can be prepared by generating hydroxyapatite by contacting a calcium source and a phosphorus source with spherical porous silica particles having a roundness of 0.560 or higher.

[0255] As spherical porous silica particles, commercially available ones on the market can be used, for example. Examples include "Sunsphere H-52" (product name, roundness: 0.958, average particle diameter: 5.0 μm, specific surface area: 652 m²) manufactured by AGC SI-TEC Inc. 2 Examples include: pore volume: 1.59 mL / g, average pore diameter: 9.8 nm, and oil absorption capacity: 324 mL / 100 g.

[0256] The above method makes it possible to support hydroxyapatite on the surface of spherical porous silica particles and on the inner surface of the pores of spherical porous silica particles in a manner that hardly alters the shape of the spherical porous silica particles that serve as the substrate.

[0257] Specific processes for preparing hydroxyapatite-supported porous silica particles are known, for example, as described in WO2021 / 210472, which is incorporated herein by reference.

[0258] (g) As the second powder, it is preferable to use silica (and) hydroxyapatite, which is commercially available from AGC SI-TEC Inc.

[0259] The amount of (g) second powder in the composition according to the present invention may be 0.01% by mass or more, preferably 0.05% by mass or more, and more preferably 0.1% by mass or more, based on the total mass of the composition.

[0260] The amount of (g) second powder in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total mass of the composition.

[0261] The amount of (g) second powder in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, relative to the total mass of the composition.

[0262] (Third powder) The composition according to the present invention may contain (h) silica, titanium dioxide, and at least one third powder selected from particles containing magnesium oxide or magnesium hydroxide. If two or more third powders are used, they may be the same or different.

[0263] (h) The third powder is preferably a solid at room temperature (25°C) and atmospheric pressure (101325 Pa). The term "solid" as used herein means a substance that does not have fluidity under its own mass, as opposed to a fluid.

[0264] (h) The third powder may consist of particles having a diameter in the range of 1 μm to 30 μm, preferably 2 μm to 20 μm, and more preferably 3 μm to 10 μm. In this specification, particle size means average (primary) particle size or average (primary) particle diameter.

[0265] The (primary) particle size can be measured, for example, by extracting it from a photographic image obtained by SEM or the like using a particle size analyzer, such as a laser diffraction particle size analyzer. It is preferable to use a particle size analyzer such as a laser diffraction particle size analyzer. In this case, the (primary) particle size is the volume-average (primary) particle size.

[0266] (h) The third powder is selected from particles containing silica, titanium dioxide, and magnesium oxide or magnesium hydroxide.

[0267] (h) The third powder may be compounded with silica, titanium dioxide, and magnesium oxide or magnesium hydroxide. For example, (h) the third powder may be made of a simple mixture of silica, titanium dioxide, and magnesium oxide or magnesium hydroxide, or it may be in the form of core-shell particles in which core particles containing any of these components are covered with at least one coating layer containing any of the other components.

[0268] (h) The third powder is preferably selected from composite particles in which the core particles are covered with at least one coating layer.

[0269] The core particles may contain silica. For example, the core particles may contain only silica, silica-alumina, silica-zirconia, silica-titania, etc.

[0270] The core particles are preferably made of silica. Amorphous silica is particularly preferred as the silica.

[0271] The core particles are preferably spherical, having a sphericity of 0.85 to 1.00. In this specification, sphericity refers to the average value determined by selecting 50 particles from a photographic projection obtained by taking images with a transmission electron microscope, measuring the maximum diameter (DL) and the minor axis (DS) perpendicular to the maximum diameter (DL), calculating the DS / DL ratio, and averaging the ratios.

[0272] The refractive index of the core particles may be between 1.3 and 1.8.

[0273] The coating layer preferably contains titanium dioxide, magnesium oxide, or magnesium hydroxide, or a mixture thereof.

[0274] Titanium dioxide may be amorphous or rutile and / or anatase crystalline. The titanium dioxide is preferably in the form of particles. The titanium dioxide particles may or may not have a coating.

[0275] Titanium dioxide particles may have an average (primary) particle diameter in the range of 1 nm to 80 nm, preferably 5 nm to 60 nm, and more preferably 15 nm to 50 nm. In this specification, the average (primary) particle size or average (primary) particle diameter is the volume average diameter.

[0276] Titanium dioxide particles can function as a UV shielding agent. Therefore, composite particles can have a UV shielding effect.

[0277] Magnesium oxide or magnesium hydroxide can function as an absorbent. Therefore, when included in the composition according to the present invention, the composite particles can contribute to the control of sebum by the composition. Furthermore, by having magnesium oxide or magnesium hydroxide as a base material, the composite particles are environmentally friendly.

[0278] The oil absorption capacity of the composite particles may be 15 mL / 100g or more, preferably 20 mL / 100g or more, more preferably 25 mL / 100g or more, and even more preferably 30 mL / 100g or more.

[0279] On the other hand, the oil absorption value of the composite particles may be 250 mL / 100 g or less, preferably 200 mL / 100 g or less, more preferably 150 mL / 100 g or less, and even more preferably 100 mL / 100 g or less.

[0280] Therefore, the oil absorption value of the composite particles may be 15 mL / 100 g to 250 mL / 100 g, preferably 20 mL / 100 g to 200 mL / 100 g, more preferably 25 mL / 100 g to 150 mL / 100 g, and even more preferably 30 mL / 100 g to 100 mL / 100 g.

[0281] The oil absorption amount can be measured according to JIS K 5101-13-1 (2004).

[0282] The composite particles preferably have at least two coating layers, the first coating layer comprising titanium dioxide, magnesium oxide, or magnesium hydroxide, or a mixture thereof, and the second coating layer comprising silica. It is more preferable that the first and second coating layers are alternately arranged on the core particles. It is even more preferable that the second coating layer forms the outermost surface of the composite particles.

[0283] It is preferable that the composite particles have at least three coating layers, the first coating layer comprising titanium dioxide, the second coating layer comprising magnesium oxide or magnesium hydroxide, and the third coating layer comprising silica. It is more preferable that the first, second, and third coating layers are alternately arranged on the core particles. For example, in one embodiment, the first, second, and third coating layers may be arranged on the core particles in this order. In another embodiment, the second, first, and third coating layers may be arranged on the core particles in this order. It is even more preferable that the third coating layer forms the outermost surface of the composite particles.

[0284] The mass ratio of silica to titanium dioxide and magnesium oxide or magnesium hydroxide that constitutes the composite particles may be 50-90:10-50, preferably 55-75:25-45, and more preferably 60-80:20-40.

[0285] Composite particles can be prepared, for example, by contacting core particles with a solution or dispersion of the components of the coating layer to form at least one coating layer on the core particles. For example, if the coating layer is to contain titanium dioxide, the core particles can be contacted with a solution or dispersion of at least one water-soluble or water-dispersible titanium compound (titanium dioxide precursor), such as a titanium alkoxide represented by the chemical formula: Ti(OR)4 (wherein R represents a hydrocarbon group). Examples of titanium compounds include tetraisopropyl titanate, tetrabutyl titanate, and tetra(2-ethylhexyl) titanate. By contacting the core particles with the solution or dispersion, titanium dioxide is formed on the core particles, and the coating layer is formed.

[0286] Specific processes for preparing hydroxyapatite-supported porous silica particles are known, for example, as described in JP-A-2018-172232, which is incorporated herein by reference.

[0287] (h) It is preferable to use, for example, particles containing silica, titanium dioxide, and magnesium oxide as the third powder, such as silica (and) titanium dioxide (and) magnesium oxide commercially available from JGC C&C.

[0288] The amount of (h) the third powder in the composition according to the present invention may be 0.01% by mass or more, preferably 0.05% by mass or more, and more preferably 0.1% by mass or more, based on the total mass of the composition.

[0289] The amount of (h) the third powder in the composition according to the present invention may be 15% by mass or less, preferably 10% by mass or less, and more preferably 5% by mass or less, based on the total mass of the composition.

[0290] The amount of (h) the third powder in the composition according to the present invention may be 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, relative to the total mass of the composition.

[0291] (pH) The pH of the aqueous phase of the composition according to the present invention may be 3 to 9, preferably 4 to 8.5, and more preferably 5 to 8.

[0292] At pH 3 to 9, (a) a cationic polymer or a complex of (a) a cationic polymer with (b) a nonpolymeric acid or salt thereof having two or more pKa values ​​can be very stable.

[0293] The pH of the composition according to the present invention can be adjusted by (b) adding at least one alkaline agent and / or at least one acid other than a nonpolymeric acid or a salt thereof having two or more pKa values. The pH of the composition according to the present invention can also be adjusted by adding at least one buffering agent.

[0294] (Alkaline agent) The composition according to the present invention may contain at least one alkaline agent. Two or more alkaline agents can be used in combination. Therefore, a single type of alkaline agent or a combination of different types of alkaline agents can be used.

[0295] The alkaline agent may be an inorganic alkaline agent. The inorganic alkaline agent is preferably selected from the group consisting of ammonia, alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal phosphates, and monohydrogen phosphates, such as sodium phosphate or monohydrogen phosphate.

[0296] Examples of inorganic alkali metal hydroxides include sodium hydroxide and potassium hydroxide. Examples of alkaline earth metal hydroxides include calcium hydroxide and magnesium hydroxide. Sodium hydroxide is preferred as the inorganic alkali agent.

[0297] The alkaline agent may be an organic alkaline agent. The organic alkaline agent is preferably selected from the group consisting of monoamines and their derivatives; diamines and their derivatives; polyamines and their derivatives; basic amino acids and their derivatives; oligomers and their derivatives of basic amino acids; polymers and their derivatives of basic amino acids; urea and its derivatives; and guanidine and its derivatives.

[0298] Examples of organic alkaline agents include alkanolamines, such as mono-, di-, and triethanolamines, as well as isopropanolamines, urea, guanidine and their derivatives, basic amino acids, such as ornithine, and diamines, for example, the following structure:

[0299] [ka]

[0300] Examples of such compounds include those described as (wherein R represents an alkylene such as propylene that is optionally substituted with a hydroxyl group or a C1-C4 alkyl group, and R1, R2, R3, and R4 independently represent a hydrogen atom, an alkyl group, or a C1-C4 hydroxyalkyl group), and can be exemplified by 1,3-propanediamine and its derivatives.

[0301] Depending on their solubility, the alkaline agent can be used in a total amount of 0.01% to 15% by mass, preferably 0.02% to 10% by mass, and more preferably 0.03% to 5% by mass, relative to the total mass of the composition.

[0302] (acid) The composition according to the present invention may contain at least one acid. Two or more acids can be used in combination. Therefore, a single type of acid or a combination of different types of acids can be used.

[0303] As the acid, any inorganic or organic acid commonly used in cosmetics can be used, preferably an inorganic acid. Monohydric acids and / or polyhydric acids may be used. Monohydric acids such as citric acid, lactic acid, sulfuric acid, phosphoric acid, and hydrochloric acid (HCl) can be used. Lactic acid may be preferred in some cases.

[0304] Depending on their solubility, acids may be used in a total amount of 0.01% to 15% by mass, preferably 0.02% to 10% by mass, and more preferably 0.03% to 5% by mass, relative to the total mass of the composition.

[0305] (Optional components) In addition to the components described above, the compositions according to the present invention may also contain, to the extent that they do not impair the effects of the present invention, any optional components typically used in cosmetics, specifically, organic or inorganic UV shielding agents, fatty acids, surfactants / emulsifiers, such as polyglyceryl fatty acid esters, fillers such as cellulose acetate, for example, (a) hydrophilic or lipophilic thickeners derived from synthetic polymers other than cationic polymers, volatile or non-volatile organic solvents such as ethanol, amphoteric polymers, nonionic polymers, (e) silicones other than oils, natural extracts derived from animals or plants other than cationic polymers or (e) oils, waxes, etc.

[0306] The composition according to the present invention may contain the above-mentioned optional additives in an amount of 0.01% to 30% by mass, preferably 0.05% to 20% by mass, and more preferably 0.1% to 10% by mass, based on the total mass of the composition.

[0307] The composition according to the present invention may contain a very limited amount of silicone, taking into consideration environmental compatibility.

[0308] The amount of silicone in the composition according to the present invention may be 1% by mass or less, preferably 0.1% by mass or less, and more preferably 0.01% by mass or less, based on the total mass of the composition. It is particularly preferable that the composition according to the present invention does not contain silicone.

[0309] (Embodiment) According to a preferred embodiment, the composition according to the present invention is With respect to the total mass of the composition, (a) at least one cationic polymer in an amount of 0.01% to 15% by mass, (b) a nonpolymer acid or salt thereof having at least one of two or more pKa values, in an amount of 0.001% to 10% by mass. (c) at least one anionic polymer in an amount of 0.01% to 15% by mass, and 10% to 50% by mass of (d) water Multiple aqueous phases including, With respect to the total mass of the composition, (e) at least one type of oil in an amount of 10% to 50% by mass. Fat phase including Includes, The aqueous phase is dispersed in the fatty phase. The composition further comprises (i) at least one inorganic oxide and (ii) at least one fatty acid or a salt thereof, and (f) at least one first powder.

[0310] According to a more preferred embodiment, the composition according to the present invention is With respect to the total mass of the composition, 0.05% to 10% by mass of (a') polylysine, chitosan, and at least one cationic polymer selected from mixtures thereof, (b') A nonpolymeric acid or salt thereof having at least one of two or more pKa values, selected from 0.003% to 5% by mass of organic acids and salts thereof, At least one anionic polymer selected from 0.05% to 10% by mass of (c') polysaccharides, and 15% to 45% by mass of (d) water Multiple aqueous phases including, With respect to the total mass of the composition, 15% to 45% by mass of (e') hydrocarbon oils, ester oils, and at least one oil selected from mixtures thereof. Fat phase including Includes, The aqueous phase is dispersed in the fatty phase. The composition further comprises (i') at least one metal oxide and (ii') at least one saturated fatty acid or a salt thereof, and (f) at least one first powder.

[0311] According to a more preferred embodiment, the composition according to the present invention With respect to the total mass of the composition, At least one cationic polymer selected from (a'') polylysine in an amount of 0.1% to 5% by mass, A nonpolymer acid or salt thereof having at least one of two or more pKa values, selected from (b'')phytic acid and its salts in an amount of 0.005% to 1% by mass, 0.1% to 5% by mass of (c'') hyaluronic acid, cellulose polymers, and at least one anionic polymer selected from salts thereof, and 20% to 40% by mass of (d) water Multiple aqueous phases including, With respect to the total mass of the composition, 20% to 40% by mass of (e'')C9-12 alkanes, tetrahydroxystearic acid / dipentaerythrityl tetraisostearate, dicaprylyl carbonate, diisopropyl sebacate, isopropyl lauroyl sarcosinate, and at least one oil selected from the group consisting of these. Fat phase including Includes, The aqueous phase is dispersed in the fatty phase. The composition further comprises (i'') at least one alkaline earth metal oxide and (ii'') at least one metal salt of a saturated fatty acid, and (f) at least one first powder.

[0312] (preparation) The composition according to the present invention can be prepared by mixing the essential components described above with the optional components (if necessary) described above.

[0313] The methods and means for mixing the above-mentioned essential components and optional components are not limited. Any conventional methods and means may be used to mix the above-mentioned essential components and optional components to prepare the compositions according to the present invention.

[0314] The compositions according to the present invention can be prepared by simply or easily mixing using conventional mixing means such as a stirrer and a homogenizer. Heating may not be necessary. Therefore, the method for preparing the compositions according to the present invention may be environmentally friendly.

[0315] (Beauty use) The compositions according to the present invention may be intended for use as cosmetic compositions. Therefore, the cosmetic compositions according to the present invention may be intended for application to keratinous substances. In this specification, keratinous substances mean substances that contain keratin as a main component, and examples include skin, scalp, nails, lips, hair, etc. Therefore, the cosmetic compositions according to the present invention are preferably used for cosmetic methods for keratinous substances, particularly skin.

[0316] Therefore, the cosmetic composition according to the present invention may be a care or makeup composition, preferably a makeup composition, and more preferably a skin makeup composition.

[0317] (form) The composition according to the present invention may be a W / O type, such as a W / O type emulsion.

[0318] The composition according to the present invention comprises multiple aqueous phases and fatty phases, the aqueous phases being dispersed in the fatty phases. Therefore, the aqueous phases can function as a dispersed phase or a discontinuous phase, and the fatty phases can function as a continuous phase.

[0319] The aqueous phase comprises (a) a cationic polymer, (b) a nonpolymeric acid or salt thereof having two or more pKa values, (c) an anionic polymer, and (d) water.

[0320] The fat phase includes (e) oil. If the composition according to the present invention includes fatty acids as independent components, the fat phase may include fatty acids.

[0321] The amount of aqueous phase in the composition according to the present invention may be 30% to 70% by mass, preferably 35% to 65% by mass, and more preferably 40% to 60% by mass, based on the total mass of the composition.

[0322] The amount of fatty phase in the composition according to the present invention may be 30% to 70% by mass, preferably 35% to 65% by mass, and more preferably 40% to 60% by mass, based on the total mass of the composition.

[0323] [Beauty methods and usage] The present invention also, A cosmetic method for keratinous substances such as skin, comprising the step of applying a composition according to the present invention to the keratinous substance, or Use of the composition according to the present invention for preparing a cosmetic film on keratinous substances such as skin. This also relates to that.

[0324] In this specification, "cosmetic method" means a non-therapeutic cosmetic method for caring for and / or applying makeup to the surface of keratinous substances such as skin.

[0325] In the above use, the cosmetic film can be resistant to water having a pH of 7 or less, and can be removed with water having a pH greater than 7, preferably 8 or higher, and more preferably 9 or higher.

[0326] In other words, the above cosmetic film may be water-resistant under neutral or acidic conditions such as pH 7 or lower, preferably in the range of 6 or higher and 7 or lower, more preferably in the range of 5 or higher and 7 or lower, but the above cosmetic film can be removed under alkaline conditions such as pH greater than 7, preferably 8 or higher, more preferably 9 or higher. The upper limit of pH is preferably 13, more preferably 12, and even more preferably 11.

[0327] Accordingly, the above-mentioned cosmetic film may be water-resistant, and therefore, the cosmetic film can remain on keratinous substances such as skin even when the surface of the keratinous substance is wet, for example, by sweat and rain. On the other hand, the above-mentioned cosmetic film can be easily removed from keratinous substances such as skin under alkaline conditions. Therefore, although the film according to the present invention is difficult to remove with water, the film can be easily removed with soap that can create alkaline conditions.

[0328] If the above cosmetic film contains at least one UV-blocking agent that may be present in the composition according to the present invention, the above cosmetic film can protect keratinous substances such as skin from UV rays, thereby suppressing skin darkening, improving skin color and uniformity, and / or treating skin aging.

[0329] Furthermore, even if the cosmetic film does not contain any active cosmetic ingredients, it may have cosmetic effects such as capturing sebum, giving a matte finish to the appearance of keratin matrix such as skin, absorbing or adsorbing unpleasant odors, and / or protecting keratin from, for example, dirt or pollutants.

[0330] In addition, even if the cosmetic film does not contain any cosmetic active ingredients, it can instantly change or correct the appearance of the skin by altering the light reflection on the skin. Therefore, the cosmetic film can conceal skin defects such as pores or wrinkles. Furthermore, the cosmetic film can instantly change or correct the tactile feel of the skin by altering the surface roughness on the skin. Moreover, the cosmetic film can instantly protect the skin by covering the skin surface as a barrier and shielding it from environmental stresses such as pollutants and impurities.

[0331] The above-mentioned cosmetic effects can be adjusted or controlled by changing the chemical composition, thickness, and / or surface roughness of the above-mentioned cosmetic film.

[0332] If the above cosmetic film contains (e) at least one additional cosmetic active ingredient other than oil, the cosmetic film may have cosmetic effects brought about by the additional cosmetic active ingredient. For example, if the cosmetic film contains at least one cosmetic active ingredient selected from anti-aging agents, deodorants, antiperspirants, whitening agents and mixtures thereof, the cosmetic film may treat skin aging, control odor on the skin, control sweating on the skin, and / or whiten the skin.

[0333] Furthermore, after a cosmetic film has been formed on a keratinous substance such as skin by the cosmetic method or use according to the present invention, a makeup composition can be applied to the cosmetic film.

[0334] The present invention also, (a) at least one cationic polymer, (b) Nonpolymeric acids or salts thereof having at least one of two or more pKa values, (c) at least one anionic polymer, (f)(i) at least one inorganic oxide, preferably a metal oxide, more preferably an alkaline earth metal oxide, and (ii) at least one first powder comprising at least one fatty acid or a salt thereof, preferably a saturated fatty acid or a salt thereof, more preferably a metal salt of a saturated fatty acid. Use in a composition, wherein the composition is (d) water Multiple aqueous phases including, (e) at least one type of oil Fat phase including Includes, The aqueous phase is dispersed in the fatty phase. The composition may also be used to stabilize it and to provide keratinous substances such as skin with at least an acceptable level of sebum control, good spreadability, and a comfortable feel.

[0335] The composition may also include (g) at least one second powder and / or (h) at least one third powder, as described above.

[0336] The above descriptions relating to optional components such as (a) cationic polymers, (b) nonpolymeric acids or salts thereof having two or more pKa values, (c) anionic polymers, (d) water, (e) oil, and (f) the first powder, as well as (g) the second powder and (h) the third powder, may apply to the above-described uses. [Examples]

[0337] The present invention will be described in more detail by reference to examples. However, these should not be construed as limiting the scope of the present invention.

[0338] (Examples 1-3 and Comparative Examples 1-4) [Preparation] Each of the compositions from Examples 1-3 and Comparative Examples 1-4 was prepared by mixing the components shown in Table 1. All numerical values ​​for the amounts of components in Table 1 are based on the "mass%" of the active ingredient.

[0339] [Table 1A]

[0340] [Table 1B]

[0341] [evaluation] (Sebum control) First, a collagen sheet (collagen foil 570mm, BizScience Co., Ltd.) was cut to prepare a 7cm x 7cm square collagen sheet, and then a microneedle was used to create holes within a 5cm x 5cm area.

[0342] Secondly, 14 μL of each composition from Examples 1-3 and Comparative Examples 1-4 was applied to a 5 cm × 5 cm area of ​​the collagen sheet having pores, and then 60 mg of artificial sebum containing the components shown in Table 2 below was applied to the back side of the 5 cm × 5 cm area to prepare a test sample.

[0343] [Table 2]

[0344] On the other hand, blank samples were also prepared by applying only 14 μL of each composition from Examples 1-3 and Comparative Examples 1-4 to a 5 cm x 5 cm area of ​​the porous collagen sheet.

[0345] Thirdly, the above test samples and blank samples were incubated at 25°C for 3 hours.

[0346] Next, the shine value of the surface of the test samples to which each composition from Examples 1-3 and Comparative Examples 1-4 was applied was measured using a gloss meter (Konica Minolta, Inc., Multi Gloss 268A).

[0347] The difference in gloss between a blank sample (composition only) and a test sample (composition and artificial sebum) was determined. This difference was recorded in Delta Gloss Units (ΔGU), and this difference was evaluated according to the following criteria. Good: 0≦ΔGU<10 Normal: 10 ≤ ΔGU < 20 Defective: 20≦ΔGU

[0348] The results are shown in Table 1.

[0349] (Centrifugal separation) Firstly, 1 g of each composition from Examples 1-3 and Comparative Examples 1-4 was used to fill cubic cells (LUMiSizer® cell type 3, LUM GmbH) having a rectangular base with a width of 2 mm.

[0350] Secondly, the cells were centrifuged using a centrifuge (LUMiSizer® analytical centrifuge, LUM GmbH) under the following conditions: 25℃, 60 minutes, 4000rpm, and 45℃, 60 minutes, 3000rpm.

[0351] Next, the appearance of each composition was analyzed and evaluated according to the following criteria. Good: No separation Normal: Slight separation (thickness of the separated phase is less than 2 mm) Defect: Separation (The thickness of the separated phase is 2 mm or more)

[0352] The results are shown in Table 1. The results shown in Table 1 reflect the stability of each composition in Examples 1-3 and Comparative Examples 1-4.

[0353] (Microscopic evaluation) Firstly, 1 μL of each composition from Examples 1-3 and Comparative Examples 1-4 was subjected to microscopic evaluation at a magnification of 100x.

[0354] Next, microscopic images of each composition were analyzed and evaluated according to the following criteria. Good: Adhering emulsion (uniform appearance) Normal: Loose emulsion (slightly uneven appearance) Defective: Defective emulsion (uneven appearance)

[0355] The results are shown in Table 1. The results shown in Table 1 reflect the stability of each composition in Examples 1-3 and Comparative Examples 1-4.

[0356] (spreadability) 20 μL of each composition from Examples 1-3 and Comparative Examples 1-4 was applied to a 4 cm × 4 cm area of ​​the forearm of a sensory tester. The composition was then spread over the area using a finger in a circular motion for 10 seconds, and left for 15 seconds. This spreading protocol was repeated four times, and the spreadability was evaluated according to the following criteria. Good: After stretching it out for the third or fourth time, it could not be stretched out further. Normal: After stretching it out the second time, it could not be stretched out any further. Defect: After stretching it out the first time, it could not be stretched out further.

[0357] The results are shown in Table 1.

[0358] (texture) 20 μL of each composition from Examples 1-3 and Comparative Examples 1-4 was applied to a 4 cm x 4 cm area of ​​the forearm of a sensory tester, and then spread using a finger. The time required for spreading and the oiliness were evaluated according to the following criteria. Good: Not greasy or sticky. Normal: Acceptable level of greasiness and stickiness. Defect: Excessive greasiness or stickiness

[0359] The results are shown in Table 1.

[0360] (summary) The compositions according to Examples 1-3, which correspond to the present invention, were stable and provided at least an acceptable level of sebum control, good spreadability, and a comfortable texture.

[0361] (f) The composition according to Comparative Example 1, which did not contain the first powder, was unstable under centrifugation, resulting in poor sebum control and poor spreadability.

[0362] (c) The composition according to Comparative Example 2, which did not contain an anionic polymer, was unstable from a microscopic perspective.

[0363] (a) The composition of Comparative Example 3, which did not contain a cationic polymer, resulted in poor spreadability and poor texture.

[0364] (b) The composition according to Comparative Example 4, which did not contain a nonpolymeric acid or salt thereof having two or more pKa values, resulted in poor sebum control.

Claims

1. (a) at least one cationic polymer, (b) Nonpolymeric acids or salts thereof having at least one of two or more pKa values, (c) at least one anionic polymer, and (d) water Multiple aqueous phases including, (e) at least one type of oil Fat phase including A composition comprising, preferably a cosmetic composition, more preferably a cosmetic composition for keratinous substances such as skin, The aqueous phase is dispersed in the fatty phase. The composition is (i) at least one inorganic oxide, preferably a metal oxide, more preferably an alkaline earth metal oxide, and (ii) At least one fatty acid or a salt thereof, preferably a saturated fatty acid or a salt thereof, more preferably a metal salt of a saturated fatty acid (f) a composition comprising at least one first powder.

2. The composition according to claim 1, wherein the cationic polymer (a) is selected from polylysine, chitosan, and mixtures thereof.

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

4. The composition according to any one of claims 1 to 3, wherein (b) a nonpolymeric acid or salt thereof having two or more pKa values ​​is an organic acid or salt thereof, preferably a hydrophilic or water-soluble organic acid or salt thereof, more preferably phytic acid or salt thereof.

5. The composition according to any one of claims 1 to 4, wherein the amount of (b) a nonpolymeric acid or salt thereof having two or more pKa values ​​in the composition is 0.001% to 10% by mass, preferably 0.003% to 5% by mass, and more preferably 0.005% to 1% by mass, based on the total mass of the composition.

6. The composition according to any one of claims 1 to 5, wherein the (c) anionic polymer is selected from the group consisting of polysaccharides, such as alginic acid, hyaluronic acid, and cellulose polymers, anionic (co)polyamino acids, such as (co)polyglutamic acid, (co)poly(meth)acrylic acid, (co)polyamic acid, (co)polystyrene sulfonate, (co)poly(vinyl sulfate), dextran sulfate, chondroitin sulfate, (co)polymaleic acid, polyfumaric acid, maleic acid (co)polymer, and salts thereof.

7. The composition according to any one of claims 1 to 6, wherein the amount of the (c) anionic polymer in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

8. The composition according to any one of claims 1 to 7, wherein the amount of (d) water in the composition is 10% to 50% by mass, preferably 15% to 45% by mass, and more preferably 20% to 40% by mass, based on the total mass of the composition.

9. The composition according to any one of claims 1 to 8, wherein the amount of the (e) oil in the composition is 10% to 50% by mass, preferably 15% to 45% by mass, and more preferably 20% to 40% by mass, based on the total mass of the composition.

10. The composition according to any one of claims 1 to 9, wherein the amount of the (f) first powder in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

11. (g) at least one second powder selected from particles containing silica and hydroxyapatite, and / or (h) at least one third powder selected from particles containing silica, titanium dioxide, and magnesium oxide or magnesium hydroxide, according to any one of claims 1 to 10.

12. The composition according to claim 11, wherein the amount of the (g) second powder and / or the (h) third powder in the composition is 0.01% to 15% by mass, preferably 0.05% to 10% by mass, and more preferably 0.1% to 5% by mass, based on the total mass of the composition.

13. The composition according to any one of claims 1 to 12, wherein the amount of the aqueous phase in the composition is 30% to 70% by mass, preferably 35% to 65% by mass, and more preferably 40% to 60% by mass, based on the total mass of the composition.

14. The composition according to any one of claims 1 to 13, wherein the amount of the fatty phase in the composition is 30% to 70% by mass, preferably 35% to 65% by mass, and more preferably 40% to 60% by mass, based on the total mass of the composition.

15. A cosmetic method for keratinous substances in the skin, etc. A step of applying the composition according to any one of claims 1 to 14 to the keratin substance. Methods that include...

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