Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1992-01-03
1994-05-31
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
8405, 8408, 8410, 8428, 8429, 424 70, A61K 713
Patent
active
053165519
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.
Clairol Incorporated
Lieberman Paul
Parks William S.
Zeller Charles
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