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US 4,369,174 AGranted
Cosmetic composition containing kojic acid ester
AssigneeSansho Pharmaceutical Co., Ltd.
InventorsSumiyoshi Nagai, Tokio Izumi
Life of this patent
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Abstract
A cosmetic composition containing a kojic acid ester with an aliphatic carboxylic acid, which is desirable for application to the skin. The kojic acid ester has an excellent effect of whitening the skin and an excellent anti-suntan effect.
Claims1
In a skin whitening cosmetic composition comprising an aqueous composition of a tyrosinase and suntanning inhibition compound in the form of a lotion, creme, pack or milk lotion, the improvement comprising 0.01 to 10% by weight of the cosmetic composition of the diester of kojic acid having the following formula as the tyrosinase and suntanning inhibition compound:
- ##STR8## wherein R is an aliphatic group containing from 3 to 20 carbon atoms.
Dependencies are inferred from the claim text.