# US 2026/0090977 A1 · Water-in-oil cosmetic composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0090977 A1 - Document ID: US20260090977A1 - Status: Published application - Kind: A1 - Application number: 19/111,053 - Filed: 2023-09-07 - Published: 2026-04-02 - Earliest claimed: 2022-09-13 - Assignees: Shin-Etsu Chemical Co., Ltd. - Applicants: Shin-Etsu Chemical Co., Ltd. - Inventors: Masaru MIYAUCHI; Masayuki KONISHI; Yoshinori INOKUCHI; Ryuji HORIGUCHI - Web page: https://patentgrep.com/patent/US20260090977A1 ## CPC - A61K 8/894: modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol - A61K 8/0241: {Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes)} - A61K 8/06: Emulsions - A61K 8/064: {Water-in-oil emulsions, e.g. Water-in-silicone emulsions} - A61K 8/31: Hydrocarbons - A61K 8/37: Esters of carboxylic acids - A61K 8/89: Polysiloxanes - A61K 8/891: saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone - A61K 8/895: containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone - A61Q 1/02: Preparations containing skin colorants, e.g. pigments (preparations in powder form A61Q1/12) - A61Q 19/00: Preparations for care of the skin - A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns - A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D) - A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS ## Abstract [Problem] The present invention has an object to provide a highly aesthetic cosmetic that is excellent in terms of its stability, finish, and spread ability at the time of application, as well as the durability of layered makeup cosmetics. [Solution] A water-in-oil cosmetic comprising an oil agent and the following components (A), (B) and (C), wherein the following component (C) is contained in an aqueous phase component of the water-in-oil cosmetic, (A) one or more kinds of silicone selected from a partially crosslinked polyether-modified silicone and a partially crosslinked polyglycerin-modified silicone in an amount of 0.1 to 4% by mass in the water-in-oil cosmetic, (B) a non-crosslinked silicone surfactant in an amount of 0.05% to 1.5% by mass in the water-in-oil cosmetic, and (C) a silicone powder absorbing 30 parts by mass or more of squalane or ethylhexyl palmitate relative to 100 parts by mass of the silicone powder in an amount of 0.5% to 10% by mass in the water-in-oil cosmetic. ## Claims ### Claim 1 A water-in-oil cosmetic comprising an oil agent and the following components (A), (B) and (C), wherein the following component (C) is contained in an aqueous phase component of the water-in-oil cosmetic, (A) one or more kinds of silicone selected from a partially crosslinked polyether-modified silicone and a partially crosslinked polyglycerin-modified silicone in an amount of 0.1 to 4% by mass in the water-in-oil cosmetic, (B) a non-crosslinked silicone surfactant in an amount of 0.05% to 1.5% by mass in the water-in-oil cosmetic, and (C) a silicone powder absorbing 30 parts by mass or more of squalane or ethylhexyl palmitate relative to 100 parts by mass of the silicone powder in an amount of 0.5% to 10% by mass in the water-in-oil cosmetic. ### Claim 2 (depends on 1) The water-in-oil cosmetic according to claim 1, wherein an amount of the aqueous phase component comprising component (C) is 30 to 90% by mass in the water-in-oil cosmetic. ### Claim 3 (depends on 1) The water-in-oil cosmetic according to claim 1, wherein component (C) is dispersed in an internal aqueous phase of the water-in-oil cosmetic. ### Claim 4 (depends on 1) The water-in-oil cosmetic according to claim 1, wherein the silicone powder absorbs 30 parts by mass or more of squalane or ethylhexyl palmitate relative to 100 parts by mass of the silicone powder by an immersion of the silicone powder in squalane or ethylhexyl palmitate at 25° C. for 24 hours. ### Claim 5 (depends on 1) The water-in-oil cosmetic according to claim 1, wherein the silicone powder is selected from the group consisting of silicone rubber powder coated with a silicone resin and silicone rubber particles. ### Claim 6 (depends on 1) The water-in-oil cosmetic according to claim 1, wherein the silicone powder is a silicone rubber particle of an addition reaction product of (C-1) an organohydrogen polysiloxane and (C-2) an alkenyl group containing-organopolysiloxane, wherein one or more selected from components (C-1) and (C-2) are a silicone rubber particle having 5 to 70 mol % of alkyl groups having 6 to 30 carbon atoms bonded to silicon atoms, based on the total mole of all substituents bonded to the silicon atoms. ### Claim 7 (depends on 6) The water-in-oil cosmetic according to claim 6, wherein component (C-1) in the silicone rubber particle has 5 to 70 mol % of alkyl groups having 6 to 30 carbon atoms bonded to silicon atoms, based on the total mole of all substituents bonded to the silicon atoms. ### Claim 8 (depends on 6) The water-in-oil cosmetic according to claim 6, wherein component (C-1) is an organohydrogen polysiloxane having two or more hydrogen atoms each bonded to a silicon atom in one molecule, as represented by the following formula (1): wherein R1 is, independently of each other, a group selected from an alkyl group having 1 to 5 carbon atoms, an aryl group having 6 to 20 carbon atoms, and an aralkyl group having 7 to 20 carbon atoms, R1′ is an alkyl group having 6 to 30 carbon atoms, q1 and q2 are, independently of each other, an integer of 1 to 60, p is an integer of 2 to 20, and the parenthesized siloxane units, p, q1 and q2, may form a block unit or be sequenced at random, and component (C-2) is an organopolysiloxane having two or more alkenyl groups in one molecule, as represented by the following formula (2): wherein R1′ is an alkyl group having 6 to 30 carbon atoms, R2 is, independently of each other, a group selected from an alkyl group having 1 to 5 carbon atoms an aryl group having 6 to 20 carbon atoms, and an aralkyl group having 7 to 20 carbon atoms, R3 is an alkenyl group having 2 to 6 carbon atoms, n1 is an integer of 1 to 40, n2 is an integer of 0 to 50, m is an integer of 0 to 10, k1 and k2 are each an integer of 0 to 3, m+k1+k2 is an integer of 2 or more, and the parenthesized siloxane units, m, n1 and n2, may form a block unit or be sequenced at random, wherein an amount of component (C-2) is such that a mole ratio of the alkenyl group in component (C-2) is 0.5 to 2, per mole of the hydrosilyl group in component (C-1). ### Claim 9 (depends on 6) The water-in-oil cosmetic according to claim 6, wherein the silicone rubber particle further comprises a platinum group metal catalyst (C-3) in addition to components (C-1) and (C-2). ### Claim 10 (depends on 6) The water-in-oil cosmetic according to claim 6, comprising a water dispersion of the silicone rubber particles according to claim 6, wherein the water dispersion comprises 5 to 80% by mass of the silicone rubber particles, 0.01 to 15% by mass of a surfactant and 19 to 94% by mass of water. ### Claim 11 (depends on 1) The water-in-oil cosmetic according to claim 1, wherein silicone powder is spherical silicone rubber particles having a volume average particle size of 0.1 to 100 μm. ### Claim 12 (depends on 5) The water-in-oil cosmetic according to claim 5, wherein the silicone rubber particles are a vinyl dimethicone/lauryl dimethicone crosspolymer as defined in the cosmetic labeling name. ### Claim 13 (depends on 5) The water-in-oil cosmetic according to claim 5, wherein the silicone rubber powder coated with a silicone resin is at least one selected from the group consisting of vinyl dimethicone/methicone silsesquioxane crosspolymer, diphenyl dimethicone/vinyl diphenyl dimethicone/silsesquioxane crosspolymer, polysilicone-22, and polysilicone-1 crosspolymer, as defined in the cosmetic labeling name. ### Claim 14 (depends on 5) The water-in-oil cosmetic according to claim 5, wherein the silicone rubber powder coated with a silicone resin is vinyl dimethicone/methicone silsesquioxane crosspolymer as defined in the cosmetic labeling name, wherein the silicone rubber powder is coated with a silicone resin and has a hydrophilic treated surface. ### Claim 15 (depends on 1) The water-in-oil cosmetic according to claim 1, comprising (E) a volatile oil agent as the oil agent in an amount of 1 to 95% by mass in the water-in-oil cosmetic. ### Claim 16 (depends on 1) The water-in-oil cosmetic according to claim 1, comprising (F) a partially crosslinked organopolysiloxane having siloxane chain as a crosslinked segment in an amount of 0.01 to 30% by mass in the water-in-oil cosmetic. ### Claim 17 (depends on 1) The water-in-oil cosmetic according to claim 1, wherein the water-in-oil cosmetic is a water-break type. ### Claim 18 (depends on 1) The water-in-oil cosmetic according to claim 1, wherein the water-in-oil cosmetic is a foundation. ### Claim 19 A method for preparing a water-in-oil cosmetic comprising the steps of adding an aqueous phase component comprising the following components (C) and (D) into an oil phase component comprising an oil agent and the following components (A) and (B), and then stirring to obtain an emulsion (A) one or more kinds of silicone selected from a partially crosslinked polyether-modified silicone and a partially crosslinked polyglycerin-modified silicone in an amount of 0.1 to 4% by mass in the water-in-oil cosmetic, (B) a non-crosslinked silicone surfactant in an amount of 0.05% to 1.5% by mass in the water-in-oil cosmetic, and (C) a silicone powder absorbing 30 parts by mass or more of squalane or ethylhexyl palmitate relative to 100 parts by mass of the silicone powder in an amount of 0.5 to 10% by mass in the water-in-oil cosmetic, (D) an aqueous component in an amount such that a total amount of the aqueous phase component including component (C) is 30 to 90% by mass in the water-in-oil cosmetic. ### Claim 20 (depends on 7) The water-in-oil cosmetic according to claim 7, comprising a water dispersion of the silicone rubber particles according to claim 7, wherein the water dispersion comprises 5 to 80% by mass of the silicone rubber particles, 0.01 to 15% by mass of a surfactant and 19 to 94% by mass of water.