Composition for hair dyeing which contains a para base and an or

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

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8406, 8412, 260396R, 260396N, A61K 712, A61K 7135

Patent

active

042682649

ABSTRACT:
The invention relates to compositions intended for dyeing keratin fibres which contain, as the only oxidative dyestuffs, oxidative dyestuff precursors of the para type and of the ortho type, at least one said precursor of the para type being an aromatic diamine, of specified formula or a specified bis-condensed precursor and at least one said precursor of the ortho type which is an ortho-aminophenol, ortho-diphenol, ortho-phenylenediamine or a derivative thereof.

REFERENCES:
patent: 3561912 (1971-02-01), Boosen et al.
patent: 3884627 (1975-05-01), Brody et al.
patent: 3961879 (1976-06-01), Bugaut et al.
patent: 3970423 (1976-07-01), Brody et al.
patent: 3981677 (1976-09-01), Halasz et al.

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