| 摘要 |
PURPOSE:To obtain a dandruff preventing cosmetic showing approximately the same or more excellent dandruff preventing effects than pyrithione zinc, having improved safety of skin, containing a lipoic acid and/or a derivative thereof. CONSTITUTION:A well-known hair cosmetic base is blended with 0.001-10wt.% based on total amount of dandruff preventing cosmetic of one or more selected from lipoic acids shown by formula I-formula II (R is H, alkyl, K or Na) and derivatives thereof as an essential component to give a dandruff preventing cosmetic which has dandruff preventing effects not at all inferior to pyrithione zinc which has been conventionally recognized to be most effective and can improve safety against pyrithione zinc having problems in terms of safety. |
