Water-in-oil emulsion sunscreen cosmetic

US11801207B2 · kind B2 · utility

Assignee

• Shiseido Company, Limited · JP

Inventors

• Satoshi Yamaki · Yokohama, JP
• Kazutaka Sasaki · Yokohama, JP
• Takashi Matsui · Musashino, JP
• Yurika WATANABE · Yokohama, JP
• Mayuri TASHIRO · Yokohama, JP
• Yuko Nagare · Tokyo, JP
• Marianne Ayaka Touati · Tokyo, JP
• Kazuhiro Yamaguchi · Kyoto, JP

Key dates

• Filing date: Oct 30, 2015
• Grant date: Oct 31, 2023
• Expiry date: Oct 30, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/522
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The object is providing a water-in-oil emulsion sunscreen cosmetic having a property not present in the prior art, in which UV protection ability improve upon contact with water, sweat and the like in comparison with that directly after application, and also having pleasant texture and easy to wash off. The present invention provides a water-in-oil emulsion sunscreen cosmetic comprising (A) 6 to 40 mass % of a UV protective agent; (B) an organic-modified clay mineral; (C) an oil-phase-thickening agent, other than (B) and (D) a silicone-based surfactant having an HLB of less than 8, wherein the ratio, [total quantity of component (B) and component (C)]/[total quantity of (E) non-volatile liquid oils except silicone oils], is 0.04 or more and less than 0.68.