Oxidation dyeing method using N-acetyclysteine as a reducing...

Details Oxidation dyeing method using N-acetyclysteine as a reducing... Oxidation dyeing method using N-acetyclysteine as a reducing...

2005-01-11

2005-01-11

Mruk, Brian P. (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S406000, C008S408000, C008S410000, C008S421000, C008S429000, C008S435000, C008S554000, C008S581000, C008S606000

Reexamination Certificate

active

06840964

ABSTRACT:
The present invention relates to a method for dyeing keratin fibers especially human keratin fibers such as hair, characterized in that it consists in the following: a dyeing composition (A) is applied to the fibers, whereby said dyeing composition contains at least one oxidation dye precursor in an appropriate medium and optionally one or several couplers in addition to N-acetylcysteine as a reducing agent; the color is revealed in the presence of air in an alkaline, neutral or acidic medium with the aid of laccase, whereby said laccase is incorporated into composition (A) or composition (B); compositions (A) and (B) are immediately mixed before used or applied successively to keratin fibers.

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