| abstract |
N-4-aminophenyl-Nʹ-2,4-diaminophenylalkylenediamines of the formula I. and their water-soluble salts are suitable as oxidation dye precursors of the developer type in oxidation hair colorants. Such hair colorants contain, in a cosmetic carrier, products of the formula I or their salts as developer components in addition to conventional developer and coupler components and, if appropriate, substantive hair dyes. With phenols, naphthols, resorcinols and 1,3-bis (2,4-diaminophenyl) alkanes or 1,3-bis (2,4-diaminophenoxy) alkanes as couplers, the new developers provide particularly intense color shades with high light-fastness properties . |