| abstract |
A hair dye substance contains at least one p-phenylene diamine derivative selected from 2-hydroxymethyl-p-phenylene diamine, 2-(2',5'-diaminophenyl)-ethanol and 2-(2'-hydroxyethoxy)-p-phenylene diamine; at least one m-phenylene diamine derivative selected from 2-(2',4'-diaminophenoxy)ethanol, 1,3-bis-(2',4'-diaminophenoxy)-propane, bis-(2',4'-diaminophenoxy)methane, 2-amino-4-((2'-hydroxyethyl)-amino)-anisol, 1-(2'-aminoethoxy)-2,4-diaminobenzol, 2-(2'-hydroxyethoxy)-5-(methylamino)-aniline, 2,4-diamino-1,5-bis-(2'-hydroxyethoxy)benzol and 1-(2',3'-dihydroxypropoxy)-2,4-diaminobenzol; and at least one 2-amino-6-chloro-4-nitrophenol of general formula (I), in which R stands for hydrogen, a straight- or branched-chain alkyl group with 1 to 6 carbon atoms, a hydroxyalkyl group with 2 to 4 carbon atoms or a straight- or branched-chain polyhydroxyalkyl group with 3 to 4 carbon atoms. Also disclosed is a hair dyeing agent based on this hair dye substance and a hair oxidation dyeing process using said dyeing agent. |