Dye composition for keratinous fibers containing a 2-substituted 4-aminophenol compound as a developer, and a coupling substance

Abstract

A hair dyeing composition comprising a special developer and a coupling agent is disclosed. The developer is a 4-aminophenol derivative substituted at the 2-position which is represented by the following formula (I), ##STR1## in which X represents a group --NHCOR.sup.1 (R.sup.1 is a linear or branched alkyl group having 1-5 carbon atoms), a group --COOR.sup.2 [R.sup.2 is a hydrogen atom, a linear or branched alkyl group having 1-5 carbon atoms, a monohydroxy alkyl group having 1-5 carbon atoms, a polyhydroxy alkyl group having 1-5 carbon atoms, or a group --(CH.sub.2).sub.n NR.sup.3 R.sup.4 (R.sup.3 and R.sup.4 individually represent a hydrogen atom or a linear or branched alkyl group having 1-5 carbon atoms, and n denotes an integer of 1-5)], a group --CONHR.sup.2, a nitrile group, a group --SO.sub.3 R.sup.2, or a group --SO.sub.2 NR.sub.2.sup.2 (R.sup.2 has the same meaning as defined above and the two R.sup.2 s may be the same or different), or a salt thereof. The dye composition provides a high degree of saturation and vividness of colors as well as good fastness.

Dependencies are inferred from the claim text.