Process and kit for dyeing hair

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

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8406, 8407, 8408, 8409, 8410, 8414, 8416, 8423, 424 70, A61K 713

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active

052735508

ABSTRACT:
A process for dyeing hair by preparing and thereafter applying to the hair an aqueous reaction medium comprising dopa and an oxidant selected from ferricyanide and permanganate salts, said aqueous reaction medium further containing a buffer to maintain the pH in the range from 6 to 10 during the reaction, and removing said aqueous reaction medium from the hair within about one hour following its preparation

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