| 摘要 |
PURPOSE:To provide a cosmetic effective to suppress the formation of melamine and free from undesirable side effect, by using a kojic acid derivative such as 2-cinnamoyloxymethyl-5-hydroxy-4H-pyran-4-one (new material), etc. as active component. CONSTITUTION:The objective cosmetic contains 0.01-1% of the compound of formula (R is benzoyloxy, cinnamoyloxy or phenoxy). The compound of formula exhibits remarkable effect to suppress the formation of melamine by the inhibition of the activity of tyrosinase existing in the human skin, and is used in cosmetics such as beauty wash, cream, milky lotion, pack, etc. The compound of formula wherein R is cinnamoyl or phenoxy is novel. |
