Topical skin agent composition

Abstract

The present invention provides a topical skin agent composition, which contains the following components (A), (B) and (C), and the mass ratio (A) / (C) of component (A) to component (C) is 5 to 23, (A) 1 to 30% by mass of a polymer, the polymer being a polymer having a silicone structure, the deformation ratio measured by a specified method (1) being 0.3 or more and 1 or less, and in the bending resistance test based on the cylindrical mandrel method carried out by a specified method (2), the minimum diameter of the cylindrical mandrel on which no cracks are generated on the film of the polymer being 2 mm or more and 25 mm or less; (B) a volatile oil having a volatility of 14% or more after drying at 40 °C and 60% R.H. for 30 minutes under 1 standard atmosphere; (C) a cation-modified clay mineral.

Description

Technical Field

[0001] The present invention relates to a composition for external use on the skin. Background Art

[0002] As people age, the number of wrinkles on their skin increases. This is part of the aging phenomenon of the skin and is affected by various factors such as changes in skin tissue and exposure to ultraviolet rays.

[0003] Previously, skin care products and the like for making skin wrinkles less noticeable have been studied, but their improvement effects are extremely low, and the satisfaction of women troubled by wrinkles has not been obtained.

[0004] On the other hand, there are known cosmetics containing a film-forming polymer for the purpose of improving the uniformity of a makeup film or the durability of a cosmetic. For example, it is described in Patent Document 1 that a cosmetic containing a film-forming polymer in which a specific functional group is introduced into the skeleton of a polycycloolefin polymer has good makeup retention or touch.

[0005] (Patent Document 1) Japanese Patent Laid-Open No. 2012-17317 Summary of the Invention

[0006] The present invention relates to a composition for external use on the skin, which contains the following components (A), (B), and (C), and the mass ratio (A) / (C) of component (A) to component (C) is 5 to 23.

[0007] (A) 1 to 30% by mass of a polymer, which is a polymer having a silicone structure, the deformation ratio measured by the following method (1) is 0.3 or more and 1 or less, and in the bending resistance test based on the cylindrical mandrel method carried out by the following method (2), the minimum diameter of the cylindrical mandrel on which no cracks occur on the film of the polymer is 2 mm or more and 25 mm or less;

[0008] Method (1): Prepare a 10% by mass hexamethyldisiloxane solution of the above polymer; coat 0.005 g of this solution on one side of a polyethylene sheet having a width of 20 mm × a length of 100 mm × a thickness of 0.03 mm in a range of width 20 mm × length 50 mm from one end of the short side in the length direction, and dry it in a constant temperature bath set at 40°C for 10 minutes; let the length of the polyethylene sheet of the coated part be L1, let the length of the polyethylene sheet of the part deformed due to shrinkage after drying be L2, and take the value of L2 / L1 as the deformation ratio;

[0009] Method (2): Prepare a 30% by mass solution of hexamethyldisiloxane of the above polymer; coat this solution onto a polyethylene terephthalate film with a width of 50 mm × a length of 100 mm × a thickness of 0.1 mm using a coater with a thickness of 200 μm, and dry it in a constant temperature bath set at 40°C for 120 minutes to produce a test piece; according to the cylindrical mandrel method specified in JIS K5600-5-1:1999, use this test piece to conduct a flexural resistance test, and find the minimum diameter of the cylindrical mandrel on which no cracks occur on the polymer film of this test piece.

[0010] (B) A volatile oil having a volatility of 14% or more after drying at 40°C and 60% R.H. for 30 minutes under 1 standard atmosphere;

[0011] (C) A cation-modified clay mineral. Description of the Drawings

[0012] Figure 1 It is an explanatory diagram of the evaluation method of the deformation ratio (L2 / L1) of the polymer obtained by method (1).

[0013] Figure 2 It is a diagram showing the manner of coating each skin external preparation composition when evaluating the wrinkle improvement effect in the examples.

[0014] [Symbol Explanation]

[0015] 1 Polyethylene sheet

[0016] 1a One end of the short side of the polyethylene sheet 1

[0017] 2 Part coated with the polymer solution Detailed Description of the Invention

[0018] Existing cosmetics containing a film-forming polymer have the following problems: the wrinkle improvement effect is insufficient, the thickness is uneven just after coating, and a beautiful makeup cannot be obtained.

[0019] The present inventors found that by using a cation-modified clay mineral in a specific ratio in a specific film-forming polymer, a skin external preparation composition can be obtained, which maintains high shrinkage, improves wrinkles on the skin, and the thickness of the coating film just after coating is uniform, and is uniform and bright after coating and drying, and the makeup is beautiful, thus completing the present invention.

[0020] The skin external preparation composition of the present invention can improve wrinkles on the skin, and the thickness of the coating film just after coating is uniform, and is uniform and bright after coating and drying, and a beautiful makeup can be obtained.

[0021] In this specification, the so-called "wrinkles of the skin" refer to the shape changes caused by skin relaxation, meaning the unevenness and texture appearing on the skin surface. Wrinkles of the skin are likely to appear in areas such as around the mouth, eyes, forehead, neck, and body. Small textures are small wrinkles, and large textures are large wrinkles. Large wrinkles are caused by the pore distribution of nasolabial folds, cheeks, etc. The skin external preparation composition of the present invention exhibits the effect of making any wrinkles less noticeable. In particular, even large wrinkles such as nasolabial folds can be improved non-invasively.

[0022] <Component (A)>

[0023] The component (A) used in the present invention is a polymer having a silicone structure, the deformation ratio measured by the above method (1) is 0.3 or more and 1 or less, and in the bending resistance test based on the cylindrical mandrel method by the above method (2), the minimum diameter of the cylindrical mandrel without cracking on the film of the polymer is 2 mm or more and 25 mm or less.

[0024] By the component (A) satisfying the above deformation ratio measured by method (1), for example, when a composition containing the polymer as the component (A) is applied by coating it on the skin around the wrinkles and then drying the composition, the film containing the polymer shrinks, and at the same time, the skin surface attached to the film shrinks. Through this action, the skin of the wrinkled part is stretched, so that the wrinkles can be made less noticeable.

[0025] Refer to Figure 1 A description will be given of the evaluation method for the deformation ratio (L2 / L1) of the component (A) obtained by the above method (1). First, a 10% by mass hexamethyldisiloxane solution of the component (A) for the composition is prepared. 0.005 g of this solution is placed on Figure 1 one side of a polyethylene sheet 1 with a width (W) of 20 mm × a length (L0) of 100 mm × a thickness of 0.03 mm as shown in (a), and from one end 1a of the short side of the polyethylene sheet 1, it is coated in a range of width 20 mm × length 50 mm in the length direction ( Figure 1 the part 2 shown in (a)), and dried in a constant temperature bath set at 40°C for 10 minutes. Figure 1 (b) is a schematic diagram of the polyethylene sheet after drying the above-coated polyethylene sheet 1, in which a part of it is deformed (curled) due to the shrinkage of the polymer as the component (A).

[0026] The dried polyethylene sheet ( Figure 1(b)) The length of the polyethylene sheet in the portion coated with the solution is designated as L1 (50 mm), the length of the polyethylene sheet in the portion deformed due to shrinkage after drying is designated as L2, and L2 / L1 is calculated. This value is taken as the deformation ratio. L2 is the average value of the values measured on the two long sides of the polyethylene sheet 1. The larger the value of L2 / L1, the greater the shrinkage amount of the polymer caused by drying. The upper limit of L2 / L1 is 1.

[0027] From the viewpoint of making the wrinkles of the skin less conspicuous by stretching them, the deformation ratio L2 / L1 of the component (A) evaluated by the above method (1) is 0.3 or more, preferably 0.5 or more, more preferably 0.6 or more, further preferably 0.7 or more, further more preferably 0.8 or more, further more preferably 0.85 or more, further more preferably 0.9 or more, further more preferably 0.95 or more, and the upper limit is 1.

[0028] This deformation ratio can be specifically evaluated by the method described in the examples.

[0029] Moreover, the component (A) has excellent flex resistance. In the flex resistance test based on the cylindrical mandrel method by the above method (2), the minimum diameter of the cylindrical mandrel on which no cracks occur on the film of the polymer as the component (A) is 2 mm or more and 25 mm or less. Thus, the film formed from the composition containing the component (A) is not likely to cause cracks and is easily shrunk in a state following the shape of the skin.

[0030] The smaller the minimum diameter of the above cylindrical mandrel, the better the flex resistance. From the viewpoint of obtaining sufficient adhesion between the film and the skin surface when the film containing the polymer shrinks, the minimum diameter is 25 mm or less, preferably 20 mm or less, more preferably 12 mm or less, further preferably 8 mm or less, further more preferably 6 mm or less, further more preferably 5 mm or less. On the other hand, from the viewpoint of imparting sufficient strength and shape control effect to make the wrinkles of the skin less conspicuous by stretching them, the minimum diameter of the cylindrical mandrel on which no cracks occur is 2 mm or more, preferably 3 mm or more. The specific range of the minimum diameter of the cylindrical mandrel is 2 to 25 mm, preferably 2 to 20 mm, more preferably 2 to 12 mm, further preferably 2 to 8 mm, further more preferably 3 to 6 mm, further more preferably 3 to 5 mm.

[0031] This flex resistance can be evaluated using a type 1 bending test apparatus specified in JIS K5600-5-1:1999. Specifically, it is evaluated according to the method described in the examples.

[0032] Further, regarding the ratio [(deformation ratio) / (minimum diameter of the mandrel)] of the deformation ratio of the component (A) obtained by the above method (1) to the minimum diameter (mm) of the mandrel obtained by the above method (2), from the viewpoint of the wrinkle improvement effect of the skin, it is preferably 0.01 or more, more preferably 0.02 or more, further preferably 0.10 or more, and still more preferably 0.15 or more. From the viewpoint of imparting sufficient strength and shape control effect so that the wrinkles of the skin are extended and not conspicuous, it is preferably 0.5 or less, more preferably 0.4 or less. The specific range of the above ratio is preferably 0.01 to 0.5, more preferably 0.02 to 0.5, further preferably 0.10 to 0.5, still more preferably 0.15 to 0.5, and still more preferably 0.15 to 0.4.

[0033] In the present invention, the "silicone structure" refers to the structure represented by the following general formula (I).

[0034]

[0035] In the general formula (I), R 1 are each independently a hydrocarbon group having 1 or more and 12 or less carbon atoms, and p is an integer of 1 or more. From the viewpoints of making the wrinkles of the skin extended and not conspicuous and obtaining a sufficient wrinkle improvement effect during application (hereinafter, also referred to as "the wrinkle improvement effect of the skin") and the viewpoint of versatility, R 1 is preferably an alkyl group having 1 or more and 12 or less carbon atoms or an aryl group having 6 or more and 12 or less carbon atoms, more preferably an alkyl group having 1 or more and 12 or less carbon atoms or a phenyl group, further preferably an alkyl group having 1 or more and 3 or less carbon atoms, and still more preferably a methyl group.

[0036] The polymer as the component (A) only needs to have a silicone structure, and it may also be a polymer composed only of a silicone structure. From the viewpoint of making a polymer having the above-mentioned specified properties, it is preferably a polymer having a silicone structure in part, and it may not only contain the D unit (R 1 2SiO 2 / 2 ), but also contain the M unit (R 1 3SiO 1 / 2 ), the T unit (R 1 SiO 3 / 2 ), and the Q unit (SiO 4 / 2 ).

[0037] In the case of a polymer having a silicone structure in part, the silicone structure may be present in the main chain or the side chain of the polymer. From the viewpoint of making a polymer having the above-mentioned specified properties, it is preferably present in the side chain.

[0038] When a silicone structure is present in the polymer main chain, there is no particular limitation on its bonding mode. For example, the silicone structure can be present at the end of the polymer main chain, or it can be a copolymer in which the silicone structure is bonded to the polymer main chain in a block or random manner. Also, a polymer graft-modified with a compound having a silicone structure can be used.

[0039] As the component (A) used in the present invention, a silicone-modified polymer is preferred. Specific examples thereof include: silicone-modified polymers containing a norbornane structure such as silicone-modified polynorbornene; silicone-modified amylose; silicate compounds containing a silicone structure such as trialkylsiloxy silicic acid, fluorine-modified alkylsiloxy silicic acid, and phenyl-modified alkylsiloxy silicic acid; silicone dendrimers, etc.

[0040] (Silicone-modified polymer containing a norbornane structure)

[0041] In the present invention, the norbornane structure means the structure represented by the following formula. The silicone-modified polymer containing a norbornane structure may be any silicone-modified polymer having the structure represented by this formula at any position in the polymer.

[0042]

[0043] As the silicone-modified polymer containing a norbornane structure, polymers having repeating units represented by the following general formula (1) or (2) can be cited.

[0044]

[0045] In the formula, R 2 are each independently an alkyl group having 1 or more and 12 or less carbon atoms, X is a group represented by the following formula (i). a is an integer of 1 or more and 3 or less, and b is an integer of 0 or more and 2 or less.

[0046]

[0047] In the formula, R 1 is the same as above, and c is an integer of 1 or more and 5 or less.

[0048]

[0049] In the formula, R 1 、R 2 and b are the same as above, and d is an integer of 2 or more and 5 or less.

[0050] In the above general formula (1), R 2Each is independently an alkyl group having 1 to 12 carbon atoms. From the viewpoints of the effect of improving skin wrinkles and versatility, it is preferably methyl, ethyl, n-propyl, butyl, or pentyl, and more preferably methyl.

[0051] X is a group represented by the above formula (i). In formula (i), R 1 Each is independently a hydrocarbon group having 1 to 12 carbon atoms. From the viewpoints of the effect of improving skin wrinkles and versatility, R 1 is preferably an alkyl group having 1 to 12 carbon atoms or an aryl group having 6 to 12 carbon atoms, more preferably an alkyl group having 1 to 12 carbon atoms or phenyl, further preferably an alkyl group having 1 to 3 carbon atoms, and even more preferably methyl. c is an integer of 1 to 5. From the viewpoint of versatility, it is preferably c = 1. That is, X is preferably trimethylsiloxy.

[0052] a is an integer of 1 to 3. For example, it can be a polymer in which a repeating unit with a = 2 and a repeating unit with a = 3 coexist. From the viewpoint of versatility, a is preferably 3. b is an integer of 0 to 2. From the same viewpoint, it is preferably 0, 1, or a combination thereof, and more preferably 0.

[0053] In the above general formula (2), R 1 and R 2 are the same as above. d is an integer of 2 to 5. From the viewpoint of versatility, it is preferably d = 2. Regarding the cyclic silicone structure in general formula (2), from the same viewpoint, it is preferably that R 1 and R 2 are methyl, and d is 2 or 3. That is, the cyclic silicone structure in general formula (2) is preferably a structure represented by the following formula (4) or (5).

[0054]

[0055] From the viewpoint of the effect of improving skin wrinkles, regarding the proportion of the repeating unit represented by the above general formula (1) or (2) in the silicone-modified polymer containing a norbornane structure, in the total number of repeating units in the polymer, it is preferably 10% or more, more preferably 30% or more, and further preferably 50% or more. Also, the upper limit is 100%, preferably 95% or less, more preferably 90% or less, and further preferably 70% or less. Regarding the specific range of the number of repeating units represented by the above general formula (1) or (2) in the silicone-modified polymer containing a norbornane structure, in the total number of repeating units in the polymer, it is preferably 10 to 100%, more preferably 10 to 95%, further preferably 30 to 90%, and even more preferably 50 to 70%.

[0056] In addition to having the repeating units represented by the above general formula (1) or (2), the silicone-modified polymer containing a norbornane structure may also have a repeating unit represented by the following general formula (3).

[0057]

[0058] In the formula, R 3 ~R 6 are each independently a hydrogen atom, a halogen atom, a substituent selected from alkyl groups, alkenyl groups, cycloalkyl groups, aryl groups, alkoxy groups, aryloxy groups, and halogenated hydrocarbon groups having 1 or more and 10 or less carbon atoms, or an oxetanyl group, an alkoxycarbonyl group, a polyoxyalkylene group, a polyglycerol group, or an alkoxysilyl group. Two groups selected from R 3 ~R 6 may be bonded to each other to form an alicyclic structure, an aromatic ring structure, a carbonimide group, or an acid anhydride group. b is the same as above.

[0059] Regarding the proportion of the repeating unit represented by the above general formula (3) in the silicone-modified polymer containing a norbornane structure, from the viewpoint of the effect of improving skin wrinkles, in the total number of repeating units in the polymer, it is preferably 90% or less, more preferably 70% or less, and still more preferably 50% or less. Further, when the repeating unit represented by the above general formula (3) is included, the proportion is preferably 5% or more, more preferably 10% or more, and still more preferably 30% or more in the total number of repeating units in the polymer. The specific range of the number of repeating units represented by the above general formula (3) in the silicone-modified polymer containing a norbornane structure is preferably 5 to 90% in the total number of repeating units in the polymer, more preferably 10 to 70%, and still more preferably 30 to 50%.

[0060] The proportion of the repeating units represented by the above general formulas (1) to (3) in the silicone-modified polymer containing a norbornane structure can be determined by 1 1H-NMR measurement.

[0061] As the silicone-modified polymer containing a norbornane structure, silicone-modified polynorbornene is preferred, and silicone-modified polynorbornene represented by the following formula (6) is more preferred.

[0062]

[0063] In the formula, e and f are the number of repeating units and are each independently an integer of 1 or more.

[0064] From the viewpoint of the effect of improving skin wrinkles, the ratio of e to f in the general formula (6) is preferably e / f = 20 / 80 to 90 / 10 (mol / mol), more preferably 30 / 70 to 80 / 20 (mol / mol), and still more preferably 50 / 50 to 70 / 30 (mol / mol).

[0065] Regarding the number average molecular weight Mn of the silicone-modified polymer containing a norbornane structure, from the viewpoints of balancing shrinkage and bending resistance and the effect of improving skin wrinkles, it is preferably 50,000 or more, more preferably 100,000 or more, still more preferably 200,000 or more, preferably 2,000,000 or less, more preferably 1,500,000 or less, still more preferably 800,000 or less, and even more preferably 600,000 or less. The specific range of the number average molecular weight Mn of the silicone-modified polymer containing a norbornane structure is preferably 50,000 to 2,000,000, more preferably 100,000 to 1,500,000, still more preferably 200,000 to 800,000, and even more preferably 200,000 to 600,000.

[0066] The number average molecular weight Mn of this polymer can be measured by gel permeation chromatography (GPC) using polystyrene as a standard substance. Specifically, it can be measured by the method described in the examples.

[0067] The silicone-modified polymer containing a norbornane structure is obtained, for example, by subjecting a silicone-modified cyclic olefin monomer containing a norbornane structure or capable of forming a norbornane structure to addition polymerization using a known method.

[0068] For example, if it is a silicone-modified polymer containing a norbornane structure having a repeating unit represented by the above general formula (1) or (2), it can be obtained by subjecting a cyclic olefin monomer represented by the following general formula (1a) or (2a) to addition polymerization. It can also be further subjected to copolymerization with a cyclic olefin monomer represented by the following general formula (3a).

[0069]

[0070] In the formula, R 1 are each independently an alkyl group having 1 or more and 12 or less carbon atoms, and X is a group represented by the following formula (i). a is an integer of 1 or more and 3 or less, and b is an integer of 0 or more and 2 or less.

[0071]

[0072] In the formula, R 2 are each independently a hydrocarbon group having 1 or more and 12 or less carbon atoms, and c is an integer of 1 or more and 5 or less.

[0073]

[0074] In the formula, R1 , R 2 and b are the same as above, and d is an integer of 2 or more and 5 or less.

[0075]

[0076] In the formula, R 3 ~R 6 are each independently a hydrogen atom, a halogen atom, a substituent selected from an alkyl group having 1 to 10 carbon atoms, an alkenyl group, a cycloalkyl group, an aryl group, an alkoxy group, an aryloxy group, and a halogenated hydrocarbon group, or an oxetanyl group, an alkoxycarbonyl group, a polyoxyalkylene group, a polyglyceryl group, or an alkoxysilyl group. Two groups selected from R 3 ~R 6 may be bonded to each other to form an alicyclic structure, an aromatic ring structure, a carbonimide group, or an acid anhydride group. b is the same as above.

[0077] When the cyclic olefin monomer represented by the above general formula (3a) is copolymerized, from the viewpoint of the effect of improving skin wrinkles, based on 100 mol% of the total monomers used for polymerization, it is preferably 90 mol% or less, more preferably 70 mol% or less, still more preferably 50 mol% or less, and further preferably 5 mol% or more, more preferably 10 mol% or more, and still more preferably 30 mol% or more.

[0078] The silicone-modified polynorbornene represented by the above formula (6) can be obtained by addition polymerization of tris(trimethylsiloxy)silyl norbornene represented by the following formula (6a) and norbornene.

[0079]

[0080] From the viewpoint of the effect of improving skin wrinkles, the copolymerization ratio of tris(trimethylsiloxy)silyl norbornene and norbornene is preferably 20 / 80 to 90 / 10 (mol / mol), more preferably 30 / 70 to 80 / 20 (mol / mol), and still more preferably 50 / 50 to 70 / 30 (mol / mol).

[0081] Furthermore, the repeating units shown in the above general formulas (1) to (3) and the above formula (6) all represent the 2,3-addition structural units of the cyclic olefin monomer as the raw material monomer, and may also include the structural units that become the 2,7-addition structural units obtained by addition polymerization of the cyclic olefin monomer.

[0082] As a silicone-modified polymer containing a norbornane structure, preferably a norbornene / tris(trimethylsiloxy)silylnorbornene copolymer, it is a compound labeled with the INCI name (International Cosmetic Ingredient Dictionary and Handbook, 16th Edition, Volume 2, 2016, p. 2274): NORBORNENE / TRIS(TRIMETHYLSILOXY)SILYLNORBORNENE COPOLYMER.

[0083] Examples of commercially available silicone-modified polymers containing a norbornane structure include "NBN-30-ID" manufactured by Shin-Etsu Chemical Co., Ltd. (a solution of norbornene / tris(trimethylsiloxy)silylnorbornene copolymer in isododecane), etc.

[0084] (Silicone-modified amylopectin)

[0085] Examples of silicone-modified amylopectin include amylopectin having a silicone structure in the side chain. Specifically, from the viewpoints of the effect of improving skin wrinkles and versatility, a silicone-modified amylopectin in which at least a part of the hydrogen atoms of the OH groups in amylopectin are substituted with a group represented by the following general formula (7) is preferred.

[0086] -Z 1 -SiX a R 2 3-a (7)

[0087] In the formula, Z 1 is a single bond or a divalent organic group. R 2 , X, and a are the same as above. From the same viewpoints, X is preferably trimethylsiloxy, and a is preferably 3.

[0088] In the general formula (7), from the same viewpoints, Z 1 is preferably a divalent organic group, more preferably a divalent group represented by the following general formula (8) or (9), and even more preferably a divalent group represented by the following general formula (9).

[0089]

[0090]

[0091] In the formula, R 11is an alkylene group having 1 or more and 10 or less carbon atoms, and examples thereof include methylene, ethylene, trimethylene, propylene, butylene and the like. From the same viewpoint, among these, ethylene, trimethylene and propylene are preferred, and trimethylene or propylene is more preferred.

[0092] Examples of commercially available silicone-modified amylopectin include "TSPL-30-ID" (isododecane solution of tris(trimethylsiloxy)silylpropylcarbamate amylopectin) and "TSPL-30-D5" (cyclopentasiloxane solution of tris(trimethylsiloxy)silylpropylcarbamate amylopectin) manufactured by Shin-Etsu Chemical Co., Ltd.

[0093] (Silicate compound containing a silicone structure)

[0094] Examples of the silicate compound containing a silicone structure for use in the present invention include silicate compounds having a silicone structure at the terminal, and examples thereof include trialkylsiloxy silicic acid, fluorine-modified alkylsiloxy silicic acid, phenyl-modified alkylsiloxy silicic acid and the like.

[0095] Regarding the alkyl group in trialkylsiloxy silicic acid, from the viewpoints of the effect of improving skin wrinkles and versatility, it is preferably an alkyl group having 1 or more and 10 or less carbon atoms, more preferably an alkyl group having 1 or more and 4 or less carbon atoms, and still more preferably a methyl group. As a specific example of trialkylsiloxy silicic acid, trimethylsiloxy silicic acid can be cited.

[0096] Examples of fluorine-modified alkylsiloxy silicic acid include compounds in which at least a part of the hydrogen atoms of the alkyl group in trialkylsiloxy silicic acid are replaced by fluorine atoms. Specific examples thereof include trifluoropropyl dimethylsiloxy silicic acid, trifluoropropyl dimethyl / trimethylsiloxy silicic acid and the like.

[0097] Examples of phenyl-modified alkylsiloxy silicic acid include phenylpropyl dimethylsiloxy silicic acid, phenylpropyl dimethyl / trimethylsiloxy silicic acid and the like.

[0098] Among the silicate compounds containing a silicone structure, from the viewpoint of the effect of improving skin wrinkles, 1 or more selected from trialkylsiloxy silicic acid and fluorine-modified alkylsiloxy silicic acid are preferred.

[0099] As commercially available silicate compounds containing a silicone structure, trimethylsiloxysilicic acids (solutions) such as "KF-7312J", "KF-7312K", "KF-7312T", "KF-7312L", "X-21-5249", "X-21-5250", "KF-9021", "X-21-5595", "X-21-5616", "KF-9021L", "X-21-5249L", "X-21-5250L" manufactured by Shin-Etsu Chemical Co., Ltd., "XS66-B8226" (a cyclopentasiloxane solution of trifluoropropyl dimethyl / trimethylsiloxysilicic acid), "XS66-B8636" (a polydimethylsiloxane solution of trifluoropropyl dimethyl / trimethylsiloxysilicic acid), "SilShine151" (phenylpropyl dimethylsiloxysilicic acid), etc. manufactured by Momentive Performance Materials Japan LLC can be used.

[0100] (Silicone dendrimer)

[0101] As the silicone dendrimer, for example, an ethylenic polymer having a siloxane dendrimer structure in the side chain can be mentioned. Regarding the siloxane dendrimer structure, from the viewpoints of the wrinkle-improving effect on the skin and versatility, specifically, a group represented by the following general formula (10) is preferred.

[0102]

[0103] In the formula, R 1 is the same as above. Z 2 is a single bond or a divalent organic group. X 1 is a group represented by the following general formula (11) when i = 1, and i is an integer of 1 or more and 10 or less representing the hierarchy of the group.

[0104]

[0105] In the formula, R 1 is the same as above, R 12 is an alkyl group having 1 or more and 10 or less carbon atoms. Z 3 is an alkylene group having 2 or more and 10 or less carbon atoms. X i+1 is a hydrogen atom, an alkyl group having 1 or more and 10 or less carbon atoms, an aryl group, or a group represented by the general formula (11), and a i is an integer of 0 or more and 3 or less.

[0106] In the general formula (10), Z 2is a single bond or a divalent organic group, and from the viewpoint of generality, it is preferably a divalent organic group, more preferably a divalent group represented by the following general formula (12), (13) or (14).

[0107]

[0108]

[0109]

[0110] In the formula, R 13 is an alkylene group having 1 or more and 10 or less carbon atoms, and examples thereof include methylene, ethylene, trimethylene, propylene, butylene, etc. From the viewpoint of generality, it is preferably ethylene, trimethylene, or propylene. R 14 is an alkyl group having 1 or more and 10 or less carbon atoms, and examples thereof include methyl, ethyl, propyl, butyl. From the same viewpoint, it is preferably methyl. R 15 is an alkylene group having 1 or more and 10 or less carbon atoms, and examples thereof include methylene, ethylene, trimethylene, propylene, butylene, etc. From the same viewpoint, it is preferably ethylene. q is an integer of 0 or more and 4 or less, and r is 0 or 1.

[0111] As the above-mentioned vinyl polymer having a siloxane dendrimer structure in the side chain (hereinafter, also simply referred to as "vinyl polymer"), a polymer having a repeating unit derived from a monomer represented by the following general formula (15) can be cited.

[0112]

[0113] In the formula, R 1 and X 1 are the same as above. Y is a group containing a vinyl bond, and examples thereof include vinyl, 2-acryloyloxyethyl, 3-acryloyloxypropyl, 2-methacryloyloxyethyl, 3-methacryloyloxypropyl, 4-vinylphenyl, 3-vinylphenyl, 4-(2-propenyl)phenyl, 3-(2-propenyl)phenyl, 2-(4-vinylphenyl)ethyl, 2-(3-vinylphenyl)ethyl, allyl, 5-hexenyl. Among these, from the viewpoint of generality, (meth)acryloyl or vinyl is preferred, and (meth)acryloyl is more preferred.

[0114] The vinyl polymer may further contain repeating units derived from vinyl monomers other than the monomers represented by the above general formula (15). Examples of the vinyl monomer include monomers having a group containing a vinyl bond and other than the monomers represented by the above general formula (15), such as (meth)acrylic acid, (meth)acrylic acid alkyl ester, (meth)acrylic acid hydroxyalkyl ester, aromatic ring-containing (meth)acrylate, fatty acid vinyl ester, (meth)acrylamide, styrene or its derivatives, etc. One or more of these can be used. Among these, from the viewpoint of versatility, (meth)acrylic acid-based monomers such as (meth)acrylic acid, (meth)acrylic acid alkyl ester, (meth)acrylic acid hydroxyalkyl ester, and aromatic ring-containing (meth)acrylate are preferred.

[0115] Regarding the content of the repeating units derived from the monomers represented by the above general formula (15) in the vinyl polymer, from the viewpoint of the wrinkle-improving effect on the skin, it is preferably 0.1% by mass or more, more preferably 10% by mass or more, and further preferably 20% by mass or more, relative to the total repeating units in the vinyl polymer. Also, the upper limit is 100% by mass.

[0116] The above vinyl polymer is more preferably an acrylic polymer. That is, as a preferred silicone dendrimer, it is an acrylic polymer having a siloxane dendrimer structure in the side chain (hereinafter, also referred to as "acrylic silicone dendrimer"). The acrylic silicone dendrimer is a polymer having repeating units derived from the monomer in which Y is (meth)acryloyl in the above general formula (15), and may further contain repeating units derived from (meth)acrylic acid-based monomers other than the monomers represented by the general formula (15).

[0117] Examples of commercially available silicone dendrimers include acrylic silicone dendrimers such as "FA4001CM Silicone Acrylate" (cyclopentasiloxane solution of acrylate-polymethyltrimethoxysilyl methacrylate copolymer) and "FA 4002ID Silicone Acrylate" (isododecane solution of acrylate-polymethyltrimethoxysilyl methacrylate copolymer) manufactured by Dow Corning Toray Co., Ltd.

[0118] As the component (A), among the above polymers, from the viewpoint of the effect of improving skin wrinkles, it is preferably at least one selected from silicone-modified polynorbornene, silicone-modified amylopectin, trimethylsiloxysilicic acid, trifluoropropyl dimethyl / trimethylsiloxysilicic acid, and acrylic silicone dendrimer, more preferably at least one selected from silicone-modified polynorbornene, silicone-modified amylopectin, trimethylsiloxysilicic acid, and trifluoropropyl dimethyl / trimethylsiloxysilicic acid. From the viewpoints of the effect of improving skin wrinkles and flex resistance, it is further preferably at least one selected from silicone-modified polynorbornene and silicone-modified amylopectin, and even more preferably silicone-modified polynorbornene.

[0119] Component (A) can be used singly or in combination of two or more. Regarding the content of the solid component, from the viewpoint of the effect of improving skin wrinkles, it is 1% by mass or more, preferably 2% by mass or more, more preferably 3% by mass or more, further preferably 4% by mass or more in the total composition, and is 30% by mass or less, preferably 25% by mass or less, more preferably 20% by mass or less, further preferably 18% by mass or less. Also, the content of the solid component of component (A) is 1 to 30% by mass, preferably 2 to 25% by mass, more preferably 3 to 20% by mass, further preferably 4 to 18% by mass in the total composition.

[0120] <Component (B)>

[0121] The component (B) used in the present invention is a volatile oil having a volatility of 14% or more after drying at 40°C and 60% R.H. for 30 minutes under 1 standard atmosphere. By containing component (B), the drying speed of the composition containing component (A) is increased, and thus the shrinkage of component (A) during the drying process is accelerated, and the effect of stretching skin wrinkles to make them less conspicuous is further enhanced.

[0122] From the viewpoint of obtaining the above effects, the volatility of component (B) after drying at 40°C and 60% R.H. for 30 minutes under 1 standard atmosphere is preferably 18% or more, more preferably 25% or more, further preferably 30% or more, even more preferably 45% or more, even more preferably 65% or more, even more preferably 80% or more, even more preferably 95% or more. Also, the upper limit is 100%.

[0123] The volatility of component (B) is obtained in the form of the value of {(W0 - W1) / W0}×100, where 0.5 g of the sample is placed in a glass dish with a diameter of 40 mm, dried at 40°C for 30 minutes in an environment of 60% R.H. under 1 standard atmosphere, the mass of the sample before drying is set as W0 (g), and the mass of the sample after drying is set as W1 (g). The larger this value is, the faster the evaporation rate and the easier it is to dry.

[0124] Furthermore, two or more kinds of volatile oils can also be used as component (B).

[0125] Specifically, the above-mentioned evaporation rate can be measured by the method described in the examples.

[0126] As component (B), from the viewpoint of improving the wrinkle improvement effect of the skin, one or more oil agents selected from hydrocarbon oils and silicone oils and having an evaporation rate within the above range can be mentioned. Among these, one or more selected from isododecane (evaporation rate 33%), hexamethyldisiloxane (evaporation rate 100%), methylpolymethyltrisiloxane, and dimethylpolysiloxane having a kinematic viscosity of 2 cSt or less at 25°C are preferred, and one or two or more selected from isododecane, hexamethyldisiloxane, methylpolymethyltrisiloxane, and octamethyldimethylpolysiloxane are more preferred. Furthermore, the kinematic viscosity can be measured using an Ubbelohde viscometer, for example.

[0127] From the viewpoint of improving the wrinkle improvement effect of the skin, component (B) is more preferably one or more selected from isododecane, hexamethyldisiloxane, and dimethylpolysiloxane having a kinematic viscosity of 1.5 cSt or less at 25°C, and further preferably one or more selected from hexamethyldisiloxane and dimethylpolysiloxane having a kinematic viscosity of 1 cSt or less at 25°C, and even more preferably hexamethyldisiloxane.

[0128] As commercially available products of hexamethyldisiloxane and dimethylpolysiloxane having a kinematic viscosity of 2 cSt or less at 25°C, examples include: "KF-96L-0.65cs" (hexamethyldisiloxane), "TMF1.5", "KF-96L-1cs" (octamethyltrisiloxane), "KF-96L-1.5cs", "KF-96L-2cs" manufactured by Shin-Etsu Chemical Co., Ltd.; "SH200C Fluid 1cs", "SH200C Fluid 1.5cs" manufactured by Dow Corning Toray Co., Ltd.; "TSF451-0.65" manufactured by Momentive Performance Materials Japan LLC; "BELSIL DM0.65" manufactured by Wacker Asahikasei Silicone Co., Ltd., etc.

[0129] Component (B) can be used alone or in combination of two or more. Regarding the content, from the viewpoint of improving the wrinkle improvement effect of the skin, it is preferably 1% by mass or more, more preferably 15% by mass or more, further preferably 30% by mass or more, further more preferably 50% by mass or more, further more preferably 70% by mass or more, preferably 98% by mass or less, more preferably 97% by mass or less, further preferably 96% by mass or less, further more preferably 95% by mass or less. Also, the content of component (B) in the total composition is preferably 1 to 98% by mass, more preferably 15 to 97% by mass, further preferably 30 to 96% by mass, further more preferably 50 to 95% by mass, further more preferably 70 to 95% by mass.

[0130] In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.02 or more, more preferably 0.03 or more, further preferably 0.04 or more, further more preferably 0.05 or more, further more preferably 0.1 or more, preferably 1 or less, more preferably 0.7 or less, further preferably 0.4 or less, further more preferably 0.25 or less from the viewpoint of improving the wrinkle improvement effect of the skin. Also, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.02 to 1, more preferably 0.03 to 0.7, further preferably 0.04 to 0.4, further more preferably 0.05 to 0.25, further more preferably 0.1 to 0.25.

[0131] <Component (C)>

[0132] The cation-modified clay mineral of component (C) used in the present invention can be used without limitation as long as it is a clay mineral commonly used in cosmetics. For example, it is preferably a cation-modified clay mineral obtained by treating layered clay minerals such as bentonite, synthetic hectorite, lithium bentonite, montmorillonite, and magnesium aluminum silicate with a quaternary ammonium salt type cationic surfactant.

[0133] Here, the quaternary ammonium salt type cationic surfactant is a surfactant represented by the following formula:

[0134] [R 1 R 2 R 3 R 4 N] + X -

[0135] (In the formula, R 1 represents an alkyl group or benzyl group having 10 to 22 carbon atoms, R 2 represents a methyl group or an alkyl group having 10 to 22 carbon atoms, R 3 and R 4represents an alkyl or hydroxyalkyl group having 1 to 3 carbon atoms, and X represents a halogen atom or a methyl sulfate residue).

[0136] Specifically, examples include: dodecyltrimethylammonium chloride, myristyltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, myristyldimethylethylammonium chloride, cetylldimethylethylammonium chloride, stearyldimethylethylammonium chloride, behenyldimethylethylammonium chloride, myristyldiethymethylammonium chloride, cetylldiethymethylammonium chloride, stearyldiethymethylammonium chloride, behenyldiethymethylammonium chloride, benzyl dimethyl myristylammonium chloride, benzyl dimethyl cetylammonium chloride, benzyl dimethyl stearylammonium chloride, benzyl dimethyl behenylammonium chloride, benzyl methylethyl cetylammonium chloride, benzyl methylethyl stearylammonium chloride, distearyldimethylammonium chloride, didodecyldihydroxyethylammonium chloride, and bromine compounds prepared by replacing the chlorides of the above compounds, etc. Further, examples include dipalmityl propyl ethyl ammonium methyl sulfate, etc.

[0137] Among these, from the viewpoints of excellent thickening property of component (B) and suppression of unevenness in the thickness of the coating film immediately after coating, benzyl dimethyl stearylammonium chloride and distearyldimethylammonium chloride are preferred, and it is preferred to contain at least distearyldimethylammonium chloride.

[0138] As the cation-modified clay mineral obtained by treating the layered clay mineral with a quaternary ammonium salt-type cationic surfactant, dimethyldistearylammonium lithium hectorite, dimethyldistearylammonium bentonite, benzyl dimethyl stearylammonium lithium hectorite, etc. are preferred, and dimethyldistearylammonium lithium hectorite is more preferred. Further, as commercially available products, examples include: BENTONE38, BENTONE 38VCG, BENTONE 27 (manufactured by Elementis Japan Co., Ltd.), etc.

[0139] Regarding the cation-modified clay mineral, from the aspects of improving workability and excellent thickening effect of oil, it can also be used in the form of a dispersion liquid diluted with a solvent.

[0140] Specifically, it is preferred to use a pre-coagulant gel in which the cation-modified clay mineral is previously dispersed in a solvent. As the solvent, there is no limitation as long as the cation-modified clay mineral can thicken. From the aspect of the thickening effect of oil, it is preferred to prepare a pre-coagulant gel that previously contains the following component (E) non-volatile oil as the solvent. Further, from the aspect of efficiently dispersing the cation-modified clay mineral to exhibit a thickening effect, as the premixed solvent, it is preferred to contain propylene carbonate, propylene glycol dicaprylate, and phenylpolymethylsiloxane as component (E), and propylene carbonate is more preferred. Further, ethanol or water can also be contained as the solvent.

[0141] Regarding the content of the cation-modified clay mineral in the pre-coagulating gel, from the aspects of improved workability, oil thickening effect, and suppression of oil separation of the thickened oily gel itself, it is preferably 5 to 25% by mass, more preferably 8 to 20% by mass, and still more preferably 10 to 18% by mass.

[0142] As the pre-coagulating gel, the following can be used: BENTONE GEL EUGV containing 10% by mass of the cation-modified clay mineral, BENTONE GEL MIOV, BENTONE GEL VS-5PCV containing 18% by mass, BENTONE GEL PTM containing 15% by mass (the above are manufactured by Elementis Japan Co., Ltd.); and commercially available products such as BENTONE GEL ISD V, BENTONE GEL OLV V, BENTONE GEL PTIS V, BENTONE GEL TMF V, BENTONE GEL VS-5PC V HV (the above are manufactured by Elementis Japan Co., Ltd.).

[0143] Component (C) can be used singly or in combination of two or more. Regarding the content, from the viewpoints of excellent thickening property of component (B), suppression of unevenness in the thickness of the coating film immediately after coating, and obtaining a bright and uniform makeup after drying, it is preferably 0.1% by mass or more in the total composition, more preferably 0.2% by mass or more, still more preferably 0.3% by mass or more, and still more preferably 0.4% by mass or more, preferably 10% by mass or less, more preferably 5% by mass or less, still more preferably 4% by mass or less, and still more preferably 3% by mass or less. Also, the content of component (C) in the total composition is preferably 0.1 to 10% by mass, more preferably 0.2 to 5% by mass, still more preferably 0.3 to 4% by mass, and still more preferably 0.4 to 3% by mass.

[0144] In the present invention, regarding the mass ratio (A) / (C) of component (A) to component (C), from the viewpoints of improving wrinkles and having no unevenness in the thickness of the coating film immediately after coating, and obtaining a bright and uniform makeup, it is 5 or more, preferably 7 or more, and 23 or less, preferably 21 or less, more preferably 18 or less. Also, the mass ratio (A) / (C) of component (A) to component (C) is 5 to 23, preferably 5 to 21, more preferably 7 to 18.

[0145] <Component (D)>

[0146] The skin external preparation composition of the present invention may further contain (D) a surfactant, preferably an anionic surfactant, a cationic surfactant, a nonionic surfactant, or an amphoteric surfactant.

[0147] As the surfactant of component (D), there is no limitation as long as it is a surfactant commonly used in external skin preparations. From the viewpoints of dissolving in volatile oils, suppressing greasiness, suppressing peeling of the coating film over time, or suppressing whitening, a nonionic surfactant is preferred.

[0148] Examples of the nonionic surfactant include sorbitan fatty acid esters, glycerol fatty acid esters, polyglycerol fatty acid esters, propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, sucrose fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerol fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, polyoxyethylene phytostanol ethers, polyoxyethylene phytosterol ethers, polyoxyethylene cholestanol ethers, polyoxyethylene cholesterol ethers, alkyl glycerol ether-modified silicones, polyoxyalkylene-modified silicones, polyoxyalkylene-alkyl co-modified silicones, polyoxyalkylene-fluoroalkyl co-modified silicones, and the like.

[0149] Among these, from the viewpoint of improving the dispersion and solubility of water and water-soluble components in oil, a silicone surfactant is preferred, and more preferably, it contains one or more alkyl glycerol ether-modified silicones and polyoxyalkylene-modified silicones, and still more preferably, it contains a polyoxyalkylene-modified silicone.

[0150] As the polyoxyalkylene-modified silicone, for example, commercially available products such as SH3771M, SH3772M, SH3773M, SH3775M, SH3749, DC5200 manufactured by Dow Corning Toray Co., Ltd., or KF-6011, KF-6012, KF-6013, KF-6015, KF-6016, KF6017, KF-6004 manufactured by Shin-Etsu Chemical Co., Ltd. can be used.

[0151] Regarding the nonionic surfactant, from the viewpoint of improving the dispersion and solubility of water and water-soluble components in oil, the HLB value is preferably 1 or more and 7 or less, and more preferably 2 or more and 6 or less.

[0152] Here, HLB (Hydrophilic-Lypophilic Balance) represents the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant, and for nonionic surfactants, it is calculated by the Griffin's formula.

[0153] The HLB of a mixed surfactant composed of two or more nonionic surfactants is determined as follows. The HLB of the mixed surfactant is obtained by adding and averaging the HLB values of the respective nonionic surfactants based on their mixing ratios.

[0154] Mixed HLB = Σ(HLBx × Wx) / ΣWx

[0155] HLBx represents the HLB value of nonionic surfactant X.

[0156] Wx is the weight (g) of nonionic surfactant X having the value of HLBx

[0157] One type or two or more types of nonionic surfactants can be used in combination. Regarding the content, from the viewpoints of solubility in volatile oils and suppression of greasiness, it is preferably 30% by mass or less, more preferably 10% by mass or less, still more preferably 5% by mass or less, still more preferably 3% by mass or less, and still more preferably 1% by mass or less in the total composition.

[0158] <Component (E)>

[0159] The topical skin agent composition of the present invention may further contain (E) a non-volatile oil. Non-volatile means that the mass reduction rate after spreading 1 g of the oil agent in a glass dish with a diameter of 48 mm and leaving it at 25°C and normal pressure for 24 hours is 1% or less.

[0160] As the non-volatile oil of component (E), any non-volatile oil commonly used in cosmetics can be used, and it can be in any of a liquid form, a paste form, or a solid form. Examples include ester oils, hydrocarbon oils, ether oils, higher alcohols, silicone oils, solid waxes, etc.

[0161] Examples of ester oils include: isononyl isononanoate, isodecyl isononanoate, tridecyl isononanoate, methyl tricyclodecane isononanoate, hexyl laurate, octyldodecyl malate, cetyl 2-ethylhexanoate, 2-hexyldecyl 2-ethylhexanoate, isopropyl myristate, 2-hexyldecyl myristate, octyldodecyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, ethyl isostearate, isopropyl isostearate, isobutyl isostearate, 2-hexyldecyl isostearate, 2-ethylhexyl hydroxystearate, octyldodecyl oleate, oleic oil, octyldodecyl ricinoleate, octyl methoxycinnamate, propylene carbonate and other monoester oils; di-2-ethylhexyl succinate, bis(ethoxydiglycol) succinate, dipropylene glycol di(caprylate / caprate), neopentyl glycol diisononanoate, dipropylene glycol didecanoate, neopentyl glycol didecanoate, diglycerol diisostearate, polyglycerol diisostearate, dipropylene glycol diisostearate, diisostearyl malate, di(phytosteryl / octyldodecyl) lauroyl glutamate, di(cholesteryl / behenyl / octyldodecyl) lauroyl glutamate, di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, neopentyl glycol di-2-ethylhexanoate, neopentyl glycol dioctanoate and other diester oils; trimethylolpropane triisostearate, triglycerol triisostearate, diglycerol triisostearate, jojoba oil, trimethylolpropane tri-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, glyceryl tri(octyl / decanoate), glyceryl tricaprylate, tridecyl trimellitate, macadamia nut oil, olive oil, castor oil, jojoba oil, avocado oil, sunflower seed oil and other triester oils; pentaerythritol tetraoctanoate, diglycerol tetraisostearate, dipentaerythritol tetraisostearate, pentaerythritol tetraisostearate, etc.

[0162] Examples of hydrocarbon oils include: squalane, liquid paraffin, liquid isoparaffin, polybutene, hydrogenated polyisobutene, hydrogenated polydecene, petrolatum, etc.

[0163] Examples of ether oils include: cetyl dimethyl butyl ether, dioctanoyl ether, etc.

[0164] Examples of higher alcohols include straight-chain or branched-chain alkyl or alkenyl higher alcohols having 10 to 24 carbon atoms, such as: lauryl alcohol, myristyl alcohol, isocetyl alcohol, isostearyl alcohol, 2-octyldodecanol, oleyl alcohol, etc.

[0165] Examples of silicone oils include: dimethylpolysiloxane, phenyltrimethylsiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, acrylic-modified silicone, fluorine-modified silicone, etc.

[0166] As the solid wax, examples of the oily component that is solid at 25°C include: vegetable waxes such as candelilla wax, rice bran wax, sunflower wax, carnauba wax, and wood wax; animal waxes such as beeswax and spermaceti wax; mineral waxes such as montan wax and ozokerite; petroleum waxes such as microcrystalline wax, paraffin wax, and ceresin; synthetic waxes such as hydrogenated castor oil, hydrogenated jojoba oil, 12-hydroxy stearic acid, stearamide, phthalimide, silicone wax, fluorine wax, polyethylene wax, and synthetic beeswax; fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, and lanolin fatty acid; higher alcohols such as cetyl alcohol, stearyl alcohol, behenyl alcohol, and hydrogenated dimerized linoleyl alcohol, etc.

[0167] Regarding the component (E), from the viewpoint of obtaining a uniform and beautiful makeup, it is preferably an ester oil, a hydrocarbon oil, or a silicone oil, and among them, a non-volatile oil that is liquid at 25°C is preferred.

[0168] As the component (E), from the viewpoint of obtaining a uniform and beautiful makeup, it is preferably at least one or two or more (E-1) ester oils, more preferably a monoester oil, a diester oil, or a triester oil, and further preferably at least a diester oil, and still more preferably a diester oil that is liquid at 25°C.

[0169] One kind or a combination of two or more kinds of the component (E) can be used. Regarding the content, from the viewpoint of obtaining a uniform and beautiful makeup, in the total composition, it is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.4% by mass or more, preferably 10% by mass or less, more preferably 8% by mass or less, further preferably 6% by mass or less, and still more preferably 2% by mass or less. Also, the content of the component (E) in the total composition is preferably 0.1 to 10% by mass, more preferably 0.2 to 8% by mass, further preferably 0.2 to 6% by mass, and still more preferably 0.4 to 2% by mass.

[0170] <Other Components>

[0171] In the present invention, regarding the water content, from the viewpoint of maintaining the wrinkle improvement effect of the skin and obtaining a non-greasy feeling in use, in the total composition, it is preferably 50% by mass or less, more preferably 30% by mass or less, further preferably 10% by mass or less, still more preferably 5% by mass or less, and still more preferably 1% by mass or less.

[0172] In addition to the above components, the topical skin agent composition of the present invention can arbitrarily use various commonly used components within the range that does not damage the effects of the present invention. Examples of these components include: oily components other than the above, water-soluble polymers, antioxidants, ultraviolet absorbers, vitamin agents, preservatives, pH regulators, fragrances, plant extracts, humectants, colorants, cooling agents, antiperspirants, bactericides, skin activators, etc.

[0173] The topical skin agent composition of the present invention can be applied in any form such as an oily composition or an emulsified composition that can be manufactured by a conventional method. As a preparation, it can be made into a liquid, emulsion, paste, cream, gel, solid, sheet, etc. for application.

[0174] The topical skin agent composition of the present invention can be used as a cosmetic, quasi-drug, or pharmaceutical, and can be made into skin care cosmetics such as lotion, emulsion, cream, beauty liquid, dispersion, gel, ointment, facial mask, mousse, aerosol, poultice, detergent, etc.; ultraviolet protection cosmetics such as sunscreen emulsion and sunscreen cream; color cosmetics such as makeup base, powder, concealer, blush, eyeshadow, mascara, eyeliner, eyebrow pencil, overcoat agent, lipstick, etc. for application.

[0175] Examples of the container for accommodating the topical skin agent composition include: bottle, jar, tube, pump, syringe container, spray container, pillow-shaped container, etc.

[0176] The topical skin agent composition of the present invention is suitable for use as a skin wrinkle improver.

[0177] Regarding the above embodiments, the present invention further discloses the following compositions.

[0178] <1> A topical skin agent composition, which contains the following components (A), (B), and (C), and the mass ratio (A) / (C) of component (A) to component (C) is 5 to 23.

[0179] (A) 1 to 30% by mass of a polymer, the polymer being a polymer having a silicone structure, the deformation ratio measured by the following method (1) being 0.3 or more and 1 or less, and in the bending resistance test based on the cylindrical mandrel method carried out by the following method (2), the minimum diameter of the cylindrical mandrel on which no cracks occur on the film of the polymer being 2 mm or more and 25 mm or less.

[0180] Method (1): Prepare a 10% by mass solution of the above polymer in hexamethyldisiloxane; coat 0.005 g of this solution on one side of a polyethylene sheet with a width of 20 mm × a length of 100 mm × a thickness of 0.03 mm in a range of width 20 mm × length 50 mm from one end of the short side in the length direction, and dry it in a constant temperature bath set at 40°C for 10 minutes; let the length of the polyethylene sheet in the part coated with the above solution be L1, let the length of the polyethylene sheet in the part deformed due to shrinkage after drying be L2, and take the value of L2 / L1 as the deformation ratio;

[0181] Method (2): Prepare a 30% by mass solution of the above polymer in hexamethyldisiloxane; use a 200-μm coater to coat this solution on a polyethylene terephthalate film with a width of 50 mm × a length of 100 mm × a thickness of 0.1 mm, and dry it in a constant temperature bath set at 40°C for 120 minutes to produce a test piece; according to the cylindrical mandrel method specified in JIS K5600-5-1:1999, use this test piece to conduct a flexural resistance test, and find the minimum diameter of the cylindrical mandrel on which no cracks occur on the polymer film of this test piece;

[0182] (B) A volatile oil with a volatility of 14% or more after drying at 40°C and 60% R.H. for 30 minutes under 1 standard atmosphere;

[0183] (C) Cation-modified clay mineral.

[0184] <2> The skin external preparation composition as described in the above <1>, wherein, in component (A), the deformation ratio L2 / L1 evaluated by the above method (1) is preferably 0.5 or more, more preferably 0.6 or more, further preferably 0.7 or more, further more preferably 0.8 or more, further more preferably 0.85 or more, further more preferably 0.9 or more, further more preferably 0.95 or more.

[0185] <3> The skin external preparation composition as described in the above <1> or <2>, wherein, in component (A), in the flexural resistance test based on the cylindrical mandrel method by the above method (2), the minimum diameter of the cylindrical mandrel on which no cracks occur on the polymer film as component (A) is preferably 20 mm or less, more preferably 12 mm or less, further preferably 8 mm or less, further more preferably 6 mm or less, further more preferably 5 mm or less, and preferably 3 mm or more.

[0186] <4> The skin external preparation composition according to any one of <1> to <3> above, wherein, in the component (A), the ratio [(deformation ratio) / (minimum diameter of mandrel)] of the deformation ratio determined by the above method (1) to the minimum diameter (mm) of the mandrel determined by the above method (2) is preferably 0.01 or more, more preferably 0.02 or more, further preferably 0.10 or more, still further preferably 0.15 or more, preferably 0.5 or less, and more preferably 0.4 or less.

[0187] <5> The skin external preparation composition according to any one of <1> to <4> above, wherein the component (A) is preferably a silicone-modified polymer, and more preferably a silicone-modified polymer containing a norbornane structure, a silicone-modified branched starch, a silicate compound containing a silicone structure, or a silicone dendrimer.

[0188] <6> The skin external preparation composition according to any one of <1> to <5> above, wherein the component (A) is preferably a silicone-modified polymer containing a norbornane structure, and more preferably a polymer having a repeating unit represented by the following general formula (1) or (2).

[0189]

[0190] In the formula, R 2 are each independently an alkyl group having 1 to 12 carbon atoms, X is a group represented by the following formula (i), a is an integer of 1 or more and 3 or less, and b is an integer of 0 or more and 2 or less;

[0191]

[0192] In the formula, R 1 is the same as above, and c is an integer of 1 or more and 5 or less;

[0193]

[0194] In the formula, R 1 , R 2 and b are the same as above, and d is an integer of 2 or more and 5 or less.

[0195] <7> The skin external preparation composition according to any one of <1> to <6> above, wherein the component (A) is preferably a silicone-modified polymer containing a norbornane structure, and more preferably a silicone-modified polynorbornene, and still further preferably a silicone-modified polynorbornene represented by the following formula (6).

[0196]

[0197] In the formula, e and f are the number of repeating units, and are each independently an integer of 1 or more.

[0198] <8> The topical skin agent composition as described in <7> above, wherein the ratio of e to f in the general formula (6) is preferably e / f = 20 / 80 to 90 / 10 (mol / mol), more preferably 30 / 70 to 80 / 20 (mol / mol), and still more preferably 50 / 50 to 70 / 30 (mol / mol).

[0199] <9> The topical skin agent composition as described in any one of <1> to <8> above, wherein component (A) is preferably at least one selected from silicone-modified polynorbornene, silicone-modified branched starch, trimethylsiloxysilicic acid, trifluoropropyl dimethyl / trimethylsiloxysilicic acid, and silicone acrylate dendrimer, more preferably at least one selected from silicone-modified polynorbornene, silicone-modified branched starch, trimethylsiloxysilicic acid, and trifluoropropyl dimethyl / trimethylsiloxysilicic acid, still more preferably at least one selected from silicone-modified polynorbornene and silicone-modified branched starch, and still more preferably silicone-modified polynorbornene.

[0200] <10> The topical skin agent composition as described in any one of <1> to <9> above, wherein the content of component (A) is preferably 2% by mass or more in the total composition, more preferably 3% by mass or more, still more preferably 4% by mass or more, preferably 25% by mass or less, more preferably 20% by mass or less, and still more preferably 18% by mass or less.

[0201] <11> The topical skin agent composition as described in any one of <1> to <10> above, wherein, in component (B), the evaporation rate after drying at 40 °C and 60% R.H. for 30 minutes under 1 standard atmosphere is preferably 18% or more, more preferably 25% or more, still more preferably 30% or more, still more preferably 45% or more, still more preferably 65% or more, still more preferably 80% or more, and still more preferably 95% or more.

[0202] <12> The topical skin agent composition as described in any one of <1> to <11> above, wherein component (B) is preferably at least one selected from hydrocarbon oil and silicone oil, more preferably at least one selected from isododecane, hexamethyldisiloxane, methylpolysiloxane, and dimethylpolysiloxane with a kinematic viscosity of 2 cSt or less at 25 °C, still more preferably at least one selected from isododecane, hexamethyldisiloxane, and dimethylpolysiloxane with a kinematic viscosity of 1.5 cSt or less at 25 °C, still more preferably at least one selected from hexamethyldisiloxane and dimethylpolysiloxane with a kinematic viscosity of 1 cSt or less at 25 °C, and still more preferably hexamethyldisiloxane.

[0203] <13>The external preparation composition for skin according to any one of <1> to <12> above, wherein the content of component (B) is preferably 1% by mass or more, more preferably 15% by mass or more, still more preferably 30% by mass or more, still more preferably 50% by mass or more, still more preferably 70% by mass or more, preferably 98% by mass or less, more preferably 97% by mass or less, still more preferably 96% by mass or less, still more preferably 95% by mass or less in the total composition.

[0204] <14>The external preparation composition for skin according to any one of <1> to <13> above, wherein the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.02 or more, more preferably 0.03 or more, still more preferably 0.04 or more, still more preferably 0.05 or more, still more preferably 0.1 or more, preferably 1 or less, more preferably 0.7 or less, still more preferably 0.4 or less, still more preferably 0.25 or less.

[0205] <15>The external preparation composition for skin according to any one of <1> to <14> above, wherein component (C) is preferably a cation-modified clay mineral obtained by treating a layered clay mineral with a quaternary ammonium salt type cationic surfactant, more preferably dimethyldistearylammonium lithium hectorite, dimethyldistearylammonium bentonite, benzyl dimethyldistearylammonium lithium hectorite, and still more preferably dimethyldistearylammonium lithium hectorite.

[0206] <16>The external preparation composition for skin according to any one of <1> to <15> above, wherein component (C) is preferably a pre-coagulated gel in which the cation-modified clay mineral is previously dispersed in a solvent, and the solvent is more preferably selected from propylene carbonate, propylene glycol dicaprylate, phenyl trimethylsiloxane, ethanol, and water.

[0207] <17>The external preparation composition for skin according to any one of <1> to <16> above, wherein the content of component (C) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.3% by mass or more, still more preferably 0.4% by mass or more, preferably 10% by mass or less, more preferably 5% by mass or less, still more preferably 4% by mass or less, still more preferably 3% by mass or less in the total composition.

[0208] <18>The external preparation composition for skin according to any one of <1> to <17> above, wherein the mass ratio (A) / (C) of component (A) to component (C) is preferably 7 or more, preferably 21 or less, more preferably 18 or less.

[0209] <19>A skin external preparation composition, which contains the following components (A), (B) and (C), and the mass ratio (A) / (C) of component (A) to component (C) is 5 to 23,

[0210] (A) 1 to 30% by mass of one or more selected from silicone-modified polynorbornene and silicone-modified branched starch;

[0211] (B) 1 to 98% by mass of a volatile oil having a volatility of 14% or more after drying at 40°C and 60% R.H. for 30 minutes under 1 standard atmosphere;

[0212] (C) 0.1 to 10% by mass of a cation-modified clay mineral.

[0213] <20>A skin external preparation composition, which contains the following components (A), (B) and (C), and the mass ratio (A) / (C) of component (A) to component (C) is 5 to 23,

[0214] (A) 1 to 30% by mass of silicone-modified polynorbornene;

[0215] (B) 1 to 98% by mass of a volatile oil having a volatility of 14% or more after drying at 40°C and 60% R.H. for 30 minutes under 1 standard atmosphere;

[0216] (C) 0.1 to 10% by mass of a cation-modified clay mineral.

[0217] <21>A skin external preparation composition, which contains the following components (A), (B) and (C), and the mass ratio (A) / (C) of component (A) to component (C) is 5 to 21,

[0218] (A) 3 to 20% by mass of one or more selected from silicone-modified polynorbornene and silicone-modified branched starch;

[0219] (B) 50 to 95% by mass of a volatile oil having a volatility of 14% or more after drying at 40°C and 60% R.H. for 30 minutes under 1 standard atmosphere;

[0220] (C) 0.2 to 5% by mass of a cation-modified clay mineral.

[0221] <22>A skin external preparation composition, which contains the following components (A), (B) and (C), and the mass ratio (A) / (C) of component (A) to component (C) is 5 to 21,

[0222] (A) 3 to 20% by mass of silicone-modified polynorbornene;

[0223] (B) 50 to 95% by mass of a volatile oil having a volatility of 14% or more after drying at 40°C and 60% R.H. for 30 minutes under 1 standard atmosphere;

[0224] (C) 0.2 to 5% by mass of a cation-modified clay mineral.

[0225] <23> The skin external preparation composition according to any one of <1> to <22> above, wherein it preferably further contains a surfactant, more preferably a nonionic surfactant, and still more preferably a nonionic surfactant having an HLB of 1 to 7.

[0226] <24> The skin external preparation composition according to <23> above, wherein the content of the nonionic surfactant is preferably 30% by mass or less, more preferably 10% by mass or less, still more preferably 5% by mass or less, still more preferably 3% by mass or less, and still more preferably 1% by mass or less in the total composition.

[0227] <25> The skin external preparation composition according to any one of <1> to <24> above, wherein it preferably further contains a non-volatile oil, more preferably contains one or more selected from ester oils, hydrocarbon oils, and silicones, still more preferably contains at least an ester oil, and still more preferably contains at least a diester oil.

[0228] <26> The skin external preparation composition according to <25> above, wherein the content of the non-volatile oil is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.4% by mass or more, preferably 10% by mass or less, more preferably 8% by mass or less, still more preferably 6% by mass or less, and still more preferably 2% by mass or less in the total composition.

[0229] <27> The skin external preparation composition according to any one of <1> to <26> above, wherein the content of water is preferably 50% by mass or less, more preferably 30% by mass or less, still more preferably 10% by mass or less, still more preferably 5% by mass or less, and still more preferably 1% by mass or less in the total composition.

[0230] <28> Use of the skin external preparation composition according to any one of <1> to <27> above as a wrinkle-improving agent for the skin.

[0231] [Examples]

[0232] Hereinafter, the present invention will be further described by way of examples, but the present invention is not limited by the scope of the examples. Furthermore, in the present examples, various measurements and evaluations were carried out by the following methods.

[0233] (Number-average molecular weight Mn)

[0234] The number-average molecular weight of the polymer was measured by gel permeation chromatography (GPC) using polystyrene as the standard substance under the following conditions.

[0235] Measuring device: HLC-8320GPC (manufactured by Tosoh Corporation)

[0236] Columns: K-806L (manufactured by Shodex), two columns in series

[0237] Detector: RI

[0238] Eluent: 1 mmol / L - Farmin DM20 (manufactured by Kao Corporation) / CHCl3

[0239] Flow rate: 1.0 mL / min

[0240] Column temperature: 40 °C

[0241] (Deformation ratio)

[0242] Prepare a 10% by mass hexamethyldisiloxane solution of the polymer of component (A) used in each composition. 0.005 g of this solution was applied to one side of a polyethylene sheet 1 (''LL Film'' manufactured by ENSHU CHEMICAL INDUSTRIES CO., LTD.) with a width (W) of 20 mm × a length (L0) of 100 mm × a thickness of 0.03 mm from one end 1a of the short side of the polyethylene sheet 1 in the length direction in a range of width 20 mm × length 50 mm ( Figure 1 (the part shown in (a) 2)) and dried in a thermostatic bath set at 40 °C for 10 minutes. For the dried polyethylene sheet ( Figure 1 (b)), the length of the polyethylene sheet in the part where the above solution was applied was designated as L1 (50 mm), and the length of the part of the polyethylene sheet that was deformed (curled) due to shrinkage after drying was designated as L2. Calculate L2 / L1, and take this value as the deformation ratio of the polymer. L2 was taken as the average value of the values measured on the two long sides of the polyethylene sheet 1. Figure 1 (Flexural resistance)

[0243] (Flexural resistance)

[0244] Prepare a 30% by mass hexamethyldisiloxane solution of the polymer of component (A) used in each composition. This solution was applied using a 200 μm coater on a polyethylene terephthalate film (''Lumirror100T60'' manufactured by Toray Industries, Inc.) with a width of 50 mm × a length of 100 mm × a thickness of 0.1 mm and dried in a thermostatic bath set at 40 °C for 120 minutes to produce a film with a polymer film attached (test piece).

[0245] Using the obtained test pieces, a flexural resistance test was conducted according to the cylindrical mandrel method specified in JIS K5600-5-1:1999. Using a type 1 bending test device (a bending testing machine manufactured by Erichsen, model 266), with the surface on the polymer film side of the test piece being the outer side, flexural resistance tests were sequentially carried out using cylindrical mandrels with diameters of 32 mm, 25 mm, 20 mm, 16 mm, 12 mm, 10 mm, 8 mm, 6 mm, 4 mm, 3 mm, and 2 mm, starting from the cylindrical mandrel with the larger diameter. The test was ended at the time when cracks occurred on the polymer film, and the minimum diameter (mm) of the cylindrical mandrel without cracks was taken as the value of flexural resistance. The smaller this value, the more excellent the flexural resistance.

[0246] (Volatilization rate)

[0247] Put 0.5 g of the sample into a glass dish with a diameter of 40 mm, and leave it to dry on a hot plate set at 40 °C in an environment of 60% R.H. under 1 standard atmosphere for 30 minutes. Let the mass of the sample before drying be W0 (g), the mass of the sample after drying be W1 (g), and the value of {(W0 - W1) / W0}×100 be taken as the volatilization rate (%). The larger this value, the faster the volatilization speed and the easier it is to dry.

[0248] (Wrinkle improvement effect)

[0249] By 5 professional panelists in the Figure 2 way shown, apply 0.2 g of each composition by finger in the nasolabial folds on one side of the face near the mouth. After drying at room temperature (25 °C) for 10 minutes, the wrinkle improvement effect was evaluated sensorially according to the following criteria. The results were expressed as the total score of 5 people.

[0250] 5: The wrinkles become very faint.

[0251] 4: The wrinkles fade.

[0252] 3: The wrinkles fade slightly.

[0253] 2: The wrinkles remain and there is little change.

[0254] 1: No change.

[0255] (Presence or absence of film thickness unevenness just after coating)

[0256] When 5 professional panelists coated each composition on the skin, the film thickness unevenness just after coating was evaluated sensorially according to the following criteria. The results were expressed as the total score of 5 people.

[0257] 5: No thickness unevenness.

[0258] 4: Almost no thickness unevenness.

[0259] 3: Slightly uneven in thickness.

[0260] 2: There is unevenness in thickness.

[0261] 1: Obvious unevenness in thickness.

[0262] (Brightness of the makeup)

[0263] Five professional panelists applied each composition to the skin. After drying, the brightness of the makeup was evaluated sensorially according to the following criteria. The results are expressed as the total score of the five people.

[0264] 5: The makeup looks very bright.

[0265] 4: The makeup looks bright.

[0266] 3: The makeup looks slightly bright.

[0267] 2: The makeup looks not very bright.

[0268] 1: The makeup looks not bright.

[0269] (Uniformity of the makeup)

[0270] Five professional panelists applied each composition to the skin. After drying, the uniformity of the makeup was evaluated sensorially according to the following criteria. The results are expressed as the total score of the five people.

[0271] 5: The makeup looks very uniform.

[0272] 4: The makeup looks uniform.

[0273] 3: The makeup looks slightly uniform.

[0274] 2: The makeup looks slightly uneven.

[0275] 1: The makeup looks uneven.

[0276] [Examples 1 to 8, Comparative Examples 1 to 3]

[0277] Prepare skin external preparation compositions having the compositions shown in Production Table 1, and evaluate the wrinkle improvement effect, the presence or absence of unevenness in the thickness of the coating film immediately after coating, the brightness of the makeup, and the uniformity of the makeup. The results are shown together in Table 1.

[0278] (Manufacturing method)

[0279] Disperse the oil phase components mixed with components (A), (B), (C), and other components through a disperser, and then stir with a homogenizing mixer to obtain a skin external preparation composition.

[0280] [Table 1]

[0281]

[0282] In Table 1, *1 to *3 are as described below.

[0283] *1: The solid component obtained by subjecting an isododecane solution of “NBN-30-ID” (in the following formula (6), e / f = 60 / 40 (mol / mol), Mn = 360,000, a norbornene / tris(trimethylsilyloxy)silyl norbornene copolymer) manufactured by Shin-Etsu Chemical Co., Ltd. to reduced pressure drying at 50°C for 12 hours, with an active ingredient concentration of 30% by mass.

[0284]

[0285] *2: The solid component obtained by subjecting an isododecane solution of “TSPL-30-ID” (an isododecane solution of tris(trimethylsilyloxy)silylpropylcarbamate amylose) manufactured by Shin-Etsu Chemical Co., Ltd. to reduced pressure drying at 50°C for 12 hours, with an active ingredient concentration of 30% by mass.

[0286] *3: The solid component obtained by subjecting an isododecane solution of “X21-5595” (an isododecane solution of trimethylsilyloxy silicic acid) manufactured by Shin-Etsu Chemical Co., Ltd. to reduced pressure drying at 50°C for 12 hours, with an active ingredient concentration of 60% by mass.

[0287] [Examples 9 to 11]

[0288] An external preparation for skin having the composition shown in Table 2 was produced in the same manner as in Examples 1 to 8.

[0289] All of the obtained external preparations for skin were able to improve wrinkles, and the coating film immediately after coating had no thickness unevenness, and a bright and uniform makeup could be obtained.

[0290] [Table 2]

[0291]

[0292] In Table 2, *4 is as described below.

[0293] *4: The solid component obtained by subjecting a cyclopentasiloxane solution of “XS66-B8226” (trifluoropropyl dimethyl / trimethylsilyloxy silicic acid) manufactured by Momentive Performance Materials Japan LLC to reduced pressure drying at 50°C for 12 hours, with an active ingredient concentration of 50% by mass.

[0294] [Example 12]

[0295] Prepare the topical skin preparation composition (liquid) having the composition of Example 1 shown in Table 1 and fill it in a spray container. Spray the topical skin composition from the spray container onto the nasolabial folds and the surrounding areas of the face. As a result, an excellent wrinkle-improving effect is obtained, and there is no uneven film thickness just after coating, and a bright and uniform makeup can be obtained.

Claims

1. A skin topical composition, wherein, it contains the following components (A), (B) and (C), and the mass ratio (A) / (B) of component (A) to component (B) is 0.05 to 0.25, and the mass ratio (A) / (C) of component (A) to component (C) is 5 to 23, (A) 4 to 18% by mass of a polymer, which is a polymer having a silicone structure, the deformation ratio measured by the following method (1) is 0.3 or more and 1 or less, and in the bending resistance test based on the cylindrical mandrel method carried out by the following method (2), the minimum diameter of the cylindrical mandrel without cracks on the film of the polymer is 2 mm or more and 25 mm or less, Component (A) is a silicone-modified polynorbornene represented by the following formula (6), In the formula, e and f are the number of repeating units, and are each independently an integer of 1 or more; Method (1): Prepare a 10% by mass hexamethyldisiloxane solution of the polymer; 0.005 g of this solution is coated on one side of a polyethylene sheet having a width of 20 mm × a length of 100 mm × a thickness of 0.03 mm in a range of 20 mm in width × 50 mm in length from one end of the short side in the length direction, and dried in a constant temperature bath set at 40 °C for 10 minutes; the length of the polyethylene sheet in the coated part is set as L1, and the length of the polyethylene sheet in the deformed part due to shrinkage after drying is set as L2, and the value of L2 / L1 is used as the deformation ratio; Method (2): Prepare a 30% by mass hexamethyldisiloxane solution of the polymer; Use a 200 μm applicator to coat this solution on a polyethylene terephthalate film having a width of 50 mm × a length of 100 mm × a thickness of 0.1 mm, and dry it in a constant temperature bath set at 40 °C for 120 minutes to produce a test piece; according to the cylindrical mandrel method specified in JIS K5600-5-1:1999, use this test piece to carry out a bending resistance test, and find the minimum diameter of the cylindrical mandrel without cracks on the polymer film on this test piece; (B) 30 to 95% by mass of a volatile oil having a volatility of 30% or more after drying at 40 °C and 60% R.H. for 30 minutes under 1 standard atmosphere, and component (B) is one or more selected from isododecane, hexamethyldisiloxane, methylpolysiloxane, and octamethyltrisiloxane; (C) A cation-modified clay mineral.

2. The skin topical composition according to claim 1, wherein, Component (C) is a cation-modified clay mineral obtained by treating a layered clay mineral with a quaternary ammonium salt type cationic surfactant.

3. The skin topical composition according to claim 1, wherein, The content of component (C) is 0.1 to 10% by mass.

4. The skin topical composition according to claim 1, wherein, It further contains 0.1 to 10% by mass of (E) non-volatile oil.

5. The skin topical composition according to claim 1, wherein, It further contains a surfactant.

6. The skin topical composition according to claim 1, wherein, It further contains water.

7. The topical skin agent composition according to claim 1, wherein Regarding component (A), in formula (6), the ratio of e to f is e / f = 20 / 80 to 90 / 10 mol / mol.

8. The non-therapeutic use of the topical skin agent composition according to any one of claims 1 to 7 as a wrinkle-improving agent for the skin.

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