process for the dyeing of fibres cheratiniche with 5 6 diidrossiindolo associated with an iodide and composition of hydrogen peroxide in alkaline ph

摘要

Process for dyeing keratinous fibres, characterized in that there is applied to these fibres at least one composition (A) containing, in an appropriate medium for dyeing, 5,6-dihydroxyindole in combination with iodide ions, the application of this composition (A) being preceded or followed by the application of a composition (B) which contains, in an appropriate medium for dyeing, hydrogen peroxide at an alkaline pH of less than 12.