Wrinkle-preventing and improving composition

Abstract

A wrinkle-preventing and -improving composition comprising one or more than one compound selected from the group consisting of α-amino acid derivatives represented by the following general formula (1) and salts thereof: wherein, R1 represents hydrogen atom, CH3 group or CH2OH group, R2 and R3 each independently represent hydrogen atom, alkyl group having 1 to 4 carbons, provided that R2 and R3 cannot be hydrogen atom at the same time, or R2 and R3 together with N atom to which they are bound may form a ring structure having a total carbon number of 4 to 6, in which case said ring structure may optionally contain an oxygen atom as a heteroatom, R4 represents hydrogen atom, alkyl group having 1 to 18 carbons, wherein when R1 and R4 are hydrogen atom, it cannot be that one of R2 and R3 is benzyloxycarbonyl group and the other is hydrogen atom.

Dependencies are inferred from the claim text.