| abstract |
The invention relates to 2,4-diamino-1,3,5-trimethoxybenzene, the method of its preparation by catalytic reduction of 2,4-dinitro-1,3,5-trimethoxybenzene and its use as a conjugate, in combination with at least a precursor of dye oxidation of the type rather than, for the dyeing of keratin fibers and especially human hair. The hair dye compositions according to the invention contain a cosmetically acceptable aqueous substrate of 0.05 to 3.5% by weight of 2,4-diamino-1,3,5-trimethoxybenzene or one of its salts, which imparts hair colors intensely blue when combined with p-phenylenediamines or red when combined with p-aminophenols in alkaline oxidizing agent. ω |