	US 12,440,429 B2
	Water-in-oil emulsion cosmetic preparation for skin
Kei Ujimoto, Tokyo (JP); Takumi Kurashima, Tokyo (JP); Momoka Kojiri, Tokyo (JP); Keita Nishida, Tokyo (JP); and Toshihiko Matsukura, Tokyo (JP)
Assigned to Shiseido Company, Ltd., Tokyo (JP)
Appl. No. 17/788,565
Filed by Shiseido Company, Ltd., Tokyo (JP)
PCT Filed Dec. 10, 2020, PCT No. PCT/JP2020/045950 § 371(c)(1), (2) Date Jun. 23, 2022, PCT Pub. No. WO2021/131720, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-233178 (JP), filed on Dec. 24, 2019.
Prior Publication US 2023/0050910 A1, Feb. 16, 2023
Int. Cl. A61K 8/06 (2006.01); A61K 8/89 (2006.01); A61Q 17/04 (2006.01)

CPC A61K 8/064 (2013.01) [A61K 8/89 (2013.01); A61Q 17/04 (2013.01)]

3 Claims

1. A water-in-oil emulsion skin cosmetic comprising:

(A) at least one compound selected from among (a-1) copolymers having silanol groups, and oxypropylene groups (PO) or oxyethylene groups (EO), and (a-2) silylated peptides; and

(B) an ultraviolet protectant,

wherein the (a-1) copolymer includes a polysiloxane structure and a polyoxyalkylene structure on a main chain, and has a side chain with trialkoxysilane groups or silanol groups, and

wherein the (a-2) silylated peptide is an N-[2-hydroxy-3-(3-trihydroxysilyl)propoxy]propyl-hydrolyzed protein or an N-[2-hydroxy-3-(3-dihydroxymethylsilyl)propoxy]propyl-hydrolyzed protein.