| abstract |
PROBLEM TO BE SOLVED: To provide a skin external preparation suitable for cosmetics (however, including quasi-drugs), specifically, a skin external preparation suitable for preventing or improving pigmentation. [Solution] The present invention provides a skin external preparation containing 1) a compound represented by the following general formula (1) and / or a pharmacologically acceptable salt thereof, and 2) a whitening component. To solve. [Chemical 1] (1) [Wherein, R1 and R2 each independently represent a hydrogen atom or a linear or branched alkyl group having 1 to 6 carbon atoms, and R3 represents a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms. Represents a group. ] [Selection figure] None |