| abstract |
(57) [Summary] [Problem] To provide a cosmetic and an external preparation which are excellent in skin roughening improvement effect, hair protection / restoration / feel enhancement effect and the like. SOLUTION: General formula (1) (Wherein, R1 represents a straight-chain or branched-chain hydrocarbon group having 6 to 40 carbon atoms, R2 to R6 each independently represent a hydrogen atom, a straight-chain or branched-chain acyl group having 8 to 40 carbon atoms, Or a linear or branched acyl group having 1 to 7 carbon atoms, Alternatively, it is indicated that two of R2 to R6 cooperate to form a cyclic carbonate, and at least one of R2 to R6 has a linear or branched acyl group having 8 to 40 carbon atoms. Wherein 1 to 3 are hydrogen atoms.) A cosmetic or an external preparation comprising one or more polyacylated gluconamide derivatives represented by the formula: |