| abstract |
[Problem] To provide a cosmetic having a hair repairing effect of thickening and softening hair, excellent moisturizing properties, and an effect of improving touch. A cosmetic containing an amino sugar derivative represented by the formula (1). [R1 is an alkyl group having 1 to 3 carbon atoms or H; R2 is H or methyl group; 1 is 1 or 2; m is 0 or 1; n is 1 or 2; l + n is 2 or 3; Y is 1 + n is 2 N is quaternized when 1 + n is 3; the sugar residue is a reducing sugar having C4-6, a disaccharide having a reducing end, an oligosaccharide, or a condensate thereof, and a carbon bonded to Y. Group excluding glycosidic OH; X is H or alkali metal] [Selection] None |