Process for dyeing hair in which the depth of shade is gradually

Details Process for dyeing hair in which the depth of shade is gradually Process for dyeing hair in which the depth of shade is gradually

1977-04-20

1978-08-01

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 101, 8 11, 8 54, A61K 712, A61K 713

Patent

active

041040210

ABSTRACT:
Human air is dyed in successive treatments at selected intervals with oxidation colors (aromatic primary amines and aminophenols) admixed in each treatment with an oxidizing agent (H.sub.2 O.sub.2 or a derivative thereof) -- the quantity of oxidation colorant applied in each treatment being substantially the same and the quantity of oxidizing agent being increased from the first to the last treatment to effect a gradual increase in depth of shade -- the mixture being allowed to remain on the hair for substantially the same tine in each treatment, followed by removal by rinsing.

REFERENCES:
patent: 3649159 (1972-03-01), Cohen et al.
patent: 3920384 (1975-11-01), Feinland et al.
patent: 3931912 (1976-01-01), Hsiung
"Coal Tar Hair Dyes"-News Item in Washington Post, Dec. 15, 1977.
Corbett, J. F. in Venkataramans's "The Chemistry of Synthetic Dyes", vol. 5 (Academic Press, 1971), pp. 475-505.

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