Method for gradual coloring of hair to a light brown shade and p

Details Method for gradual coloring of hair to a light brown shade and p Method for gradual coloring of hair to a light brown shade and p

1976-08-26

1981-10-27

Trousof, Natalie

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8416, 8421, 8424, A61K 713

Patent

active

042970989

ABSTRACT:
Living human hair is progressively colored to the desired light brown shade by repeated applications of a preparation containing a low concentration of a mixture of oxidative dye components, namely, 2 to 3 components selected from p-phenylenediamine (or p-toluenediamine), pyrogallol, and m-aminophenol. To obtain a gradual, true color development, it is important to employ the dye components in certain relative proportions. In the use of the preparation, no oxidizing agent is added, and the color development reaction is obtained by contact of the dye mixture with atmospheric oxygen. The preparation is preferably in the form of an aqueous gel also containing hair grooming or conditioning agents.

REFERENCES:
patent: 3337411 (1967-08-01), Wilmsmann et al.
patent: 3415608 (1968-12-01), Tucker
patent: 3694138 (1972-09-01), Kalopissis et al.
patent: 3920384 (1975-11-01), Feinland et al.

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