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US 2014/0178481 A1Published application
Water-In-Oil Type Emulsion Sunscreen Cosmetics
AssigneeShiseido Company, Ltd.
InventorsMasayuki Shirao, Kazuhiro Yamaguchi, Takashi Matsui, Norinobu Yoshikawa, Yuki Nomura
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Abstract
The present invention provides water-in-oil type emulsion sunscreen cosmetics that achieve an excellent UV blocking effect, and have excellent effects in the prevention and inhibition of discoloration (discoloration to red). The water-in-oil emulsion sunscreen cosmetic according to the present invention is characterized by comprising: (a) octocrylene; (b) hydrophobized zinc oxide; (c) cationic surfactant; and (d) silica.
Claims15
1-5. (canceled)
A method of making a water-in-oil type emulsion sunscreen cosmetic comprising:
- mixing (a) octocrylene, (b) hydrophobized zinc oxide having a coating of (c) cationic surfactant on a surface of the hydrophobized zinc oxide, and (d) silica to make an oil phase;
- and
- adding a water phase to the oil phase to make the water-in-oil type emulsion sunscreen cosmetic,
- wherein an amount of the (c) cationic surfactant is 0.5 to 10% by mass with respect to the (b) hydrophobized zinc oxide, and
- an amount of the (d) silica is 0.1 to 20% by mass with respect to the cosmetic.
2 more elements
Dependencies are inferred from the claim text.