| abstract |
Wrinkling modifiers and anti-aging cosmetic preparations which contain guanidine derivatives of general formula (1) or salts thereof, wherein (a) is a group derived from a heterocyclic compound selected from among azetidine, pyrrolidine, piperidine, piperazine and morpholine; and R?1 and R2¿ are each independently hydrogen, alkyl, hydroxyl, hydroxyalkyl, carboxyl, carboxyalkyl or amidino. The cosmetic preparations are excellent in the effect of suppressing wrinkling and the effect of making wrinkles disappear and exhibit an excellent feeling in use. |