Oxidative hair dyeing process with catalytic pretreatment

Details Oxidative hair dyeing process with catalytic pretreatment Oxidative hair dyeing process with catalytic pretreatment

1991-03-07

1992-03-31

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

8406, 8408, 8410, 8428, 8429, 424 70, A61K 713

Patent

active

051004364

ABSTRACT:
In a method for oxidatively dyeing hair, a pretreatment which comprises contacting hair with an aqueous solution of an effective amount of particular metal/chelate complexes followed by treatment with oxidative dye mixtures is disclosed. The process serves to conform the oxidative dyeing rate of virgin hair to that of the normally noncongruent rate of nonvirgin hair, so as to enhance the efficiency of the oxidative dyeing process, without reducing the intensity or variety of color available.

REFERENCES:
patent: 3948596 (1976-04-01), Kolopissis et al.
patent: 3950532 (1976-04-01), Bouillon et al.
patent: 3981676 (1976-09-01), Ghilardi et al.
patent: 3989447 (1976-11-01), Kolopissis et al.

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