Composition for coloring of keratin fibers

Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing

Reexamination Certificate

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C008S406000, C008S410000, C008S411000, C008S415000, C008S435000, C008S455000, C008S463000, C008S552000, C008S581000, C132S202000, C132S208000

Reexamination Certificate

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07429276

ABSTRACT:
The present invention concerns a composition for the dyeing keratin fibers especially human hair on the basis of an oxidation dyestuff precursor system reacting with peroxide and comprising additionally anionic direct dyes which provides long-lasting, intensive, vibrant colors. Hair dyeing composition of the present invention comprises at least one oxidation dyestuff precursor reacting with peroxide, optionally at least one coupling agent and at least one acidic direct dye. The compositions of the present invention do not comprise any cationic dyes.

REFERENCES:
patent: 5006127 (1991-04-01), Tennigkeit et al.
patent: 5618525 (1997-04-01), Bunning
patent: 6537328 (2003-03-01), Lang et al.
patent: 2004/0237217 (2004-12-01), Desenne et al.
Eisa Elilo/ Primary Examiner, A.U. 1796.

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