PROCESS FOR DYEING KERATINOUS FIBRES WITH 2,6-DIMETHYL-1,4-DIAMINOBENZENE AND/OR 2,3-DIMETHYL-1,4-DIAMINOBENZENE AND/OR 2,6-DIETHYL-1,4-DIAMINOBENZENE IN AN ACID MEDIUM AND COMPOSITIONS EMPLOYED

摘要

Process for dyeing keratinous fibres, especially human keratinous fibres such as hair, which consists in applying on these fibres a composition containing, in a medium suitable for dyeing, at least 2,6-dimethyl-1,4-diaminobenzene and/or 2,3-dimethyl-1,4-diaminobenzene and/or 2,6-diethyl-1,4-diaminobenzene, as well as its salts and an oxidising agent, the pH of the composition applied on the fibres being below 7 and the aforementioned composition not containing iodide ions in sufficient amounts to oxidise the oxidation dye precursor.