Process for the direct dying of keratinous fibres using natural

Details Process for the direct dying of keratinous fibres using natural Process for the direct dying of keratinous fibres using natural

1996-03-20

1998-03-10

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8646, 8933, A61K 713

Patent

active

057256039

ABSTRACT:
A process for the direct dyeing of keratinous fibers, which comprises directly dyeing the fibers by contacting the fibers with a composition containing at least one natural dye and with a gas containing water vapor, the temperature of the gas being at least 75.degree. C. and the contact time between the gas and the fibers to be dyed not exceeding two minutes. The hair is dyed uniformly over the whole head of hair, from the roots to the ends, regardless of the condition of the hair.

REFERENCES:
patent: 4553339 (1985-11-01), Rigo
patent: 5104413 (1992-04-01), Ikeda
English language translation of FR 1,011,151, Amica Co., Jun. 1952, p. 1-14 .

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