Beauty white and/or the constituent in order to decolorize and manner are offered the skin, the said constituent has the structure formula (i), or the derivative of chemical compound or the said chemical compound which possess the structure formula (ii), or includes the salt, the solvent dishes dressed with sauce or biology pre- car sir, or stereoisomer or the optical isomer which are allowed physiology, in addition the said chemical compound in the constituent, pharmacy, or with the substrate which the skin scientifically is allowed, includes the skin beauty white or decolorization chemical compound of safety and the effective tonnage as cosmetics.[In formula,1 R and2 R are identical and or it differs, respectively, hydrogen, alkyl, karubometokishi and karuboetokishi, the alkoxy, and the alkanoyl (of these, halogen it is possible) and to be displacement it is chosen from the group which consists of halogen 6R is chosen from the group which consists of hydrogen, methyl, and ethyl R3,4 R and5 R are identical and or it differs, respectively, hydrogen, methyl, the methoxy, the ethoxy and the methoxyethoxy, the ethoxy ethoxy, it is chosen (of these, halogen) consists of it is possible to be displacement from the group which such as propoxy and puropokishimetokishi. ][In formula,2 R, hydrogen, is low-grade alkyl or hydroxy low-grade alkyl As for3 R, low-grade alkyl,--CHCN2, hydroxy low-grade alkyl, - NO, - CHN=C2, or(In formula,6 R and7 R, becoming independent, are chosen from the group which consists of hydrogen and low-grade alkyl), or to be hydrogen, (however, in this case2 R is not hydrogen) When4 as for R, Z-T-W (in formula, as for Z, - O-, - NH- HA single join is displayed, T direct or displays Z single joins, in addition as for T displays in addition (as for unsaturated carbon, is the low-grade alkylene basis of the branching chain, the eteniren or puropeniren basis and Z in position of single join), - in case of O-no, as for T the ant run basis is displayed and (
