Process for dyeing keratinous fibers with aminoindoles and oxida

Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing

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8408, 8410, 8411, 8412, 8423, A61K 713

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active

059387920

ABSTRACT:
The invention relates to a process for dyeing keratinous fibres, which consists in applying to these fibres a composition containing, in a suitable medium for dyeing, at least one coupler of formula: ##STR1## where R.sub.1 denotes hydrogen or alkyl,

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patent: 5752982 (1998-05-01), Lang et al.

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