Compsitions for dyeing keratinous fibers comprising an ortho-dia

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

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8407, 8408, 8423, 8628, A61K 713

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active

057699020

ABSTRACT:
Compositions for dyeing keratinous fibers comprising at least one an ortho-diaminopyrazole or an acid addition salt thereof and a manganese salt as well as a dyeing process using these compositions, without any oxidizing agent other than atmospheric oxygen.

REFERENCES:
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patent: 4776856 (1988-10-01), Tennigkeit et al.
patent: 5061289 (1991-10-01), Clausen et al.
patent: 5199954 (1993-04-01), Schultz et al.
patent: 5368610 (1994-11-01), Chan et al.
patent: 5534267 (1996-07-01), Neunhoeffer et al.

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