| 摘要 |
The invention relates to particularly ammoniac-free agents for coloring fibers comprising keratin, particularly human hair, comprising 2-(2-hydroxyethyl)-P-phenylendiamine and/or one of the physiologically compatible salts thereof, at least one hydroxyalkylamine, and at least one acylized amino acid derivative of the formula (I), where R1 represents a C7-C30-alkyl group, a C7-C30-alkenyl group, or a C7-C30-hydroxyalkyl group; R2 and R3 independently represent a hydrogen atom, a C1-C4-alkyl group, or a C1-C4-hydroxyalkyl group; and M represents a hydrogen atom or an equivalent of a univalent or multivalent cation. The colorants generated using said agent are characterized by improved grey coverage and reduced allergy potential. |
