| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new tyrosinase inhibitor, and to prepare a bleaching cosmetic which has excellent bleaching effects for preventing or improving abnormal melamine pigmentation in the skin, and the like, little produces side effects, and has excellent safety for the skin. SOLUTION: This tyrosinase inhibitor contains a compound represented by formula (I) (R is H or an alkyl) or its salt as an active ingredient, and the bleaching cosmetic contains the tyrosinase inhibitor. COPYRIGHT: (C)2005,JPO&NCIPI
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