| abstract |
The invention relates to the use, as a coupler, of 2,4-diamino-1,3-dimethoxybenzene or one of its addition salts with an acid, in combination with at least one dye precursor. para-type oxidation, for dyeing keratin fibers and in particular human hair. The hair dye compositions according to the invention contain, in a cosmetically acceptable aqueous carrier, 0.05 to 3.5% by weight of 2,4-diamino-1,3-dimethoxybenzene or one of its salts, which gives the hair powerful blue colorings when combined with p-phenylenediamines or red when combined with p-aminophenols, in an oxidizing alkaline medium. |