| 摘要 |
PURPOSE:To obtain hair nouring cosmetic containing chalcone or derivative thereof, having ability capable of inhibiting 5alpha-reductase activity and having excellent effects to hair growth, prevention against depilation, prevention against dander, etc., and simultaneously low irritability to skin. CONSTITUTION:One or more kind of chalcones selected from formula I (R1-R7 are H, OH, methyl, methoxy, ethoxy or isopropyl) or derivative thereof are incorporated into a hair nouring cosmetic such as hair tonic, hair lotion or hair cream as essential ingredients at concentration of 0.05-1.0wt.%, preferably 0.1-0.7wt.% based on total weight of composition of hair nouring cosmetic to provide the hair nouring cosmetic having the above-mentioned effects. Furthermore, the above-mentioned compound is obtained by condensing a compound expressed by formula II with a compound expressed by formula III in an organic solvent in the presence of a base. |
