EXTERNAL PREPARATION FOR SKIN, BLEACHING EXTERNAL PREPARATION FOR SKIN, BLEACHING AGENT AND TYROSINASE ACTIVITY INHIBITOR

摘要

PROBLEM TO BE SOLVED: To provide an external preparation for skin comprising a new ingredient having excellent bleaching effects.;SOLUTION: The external preparation for skin comprises a compound represented by general formula (1) [wherein, A represents a -(CR₂R₃)_n- {wherein, R₂ and R₃ represent each independently a hydrogen atom, a 1-4C alkyl group, a 2-4C alkenyl group, a halogen, an OR₄ or an NR₅R₆ (wherein, R₄, R₅ and R₆ represent each independently a hydrogen atom, a 1-4C alkyl group or a 2-4C alkenyl group); and n is 1-3}; and R₁ represents a hydrogen atom, a 1-8C alkyl group, a 2-8C alkenyl group, a 3-8C cycloalkyl group, a 2-12C aryl group, a 3-12C arylalkyl group or a 1-12C acyl group].;COPYRIGHT: (C)2007,JPO&INPIT