Multi-tonal one step dyeing with thickening pre-treatment solution

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United States of America Patent

PATENT NO 9918928
SERIAL NO

15435166

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Abstract

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A method for dyeing keratin fibers, in particular human hair, in which, after a thickened pretreatment agent (M1) including at least one oxidation dye precursor has been applied and left to act, directly thereafter and without rinsing a coloring agent (M2) is applied and left to act. By virtue of this method, in one dyeing step the hair can be colored and at the same time a multi-tonal dyeing with lighter (“highlights”) or darker (“lowlights”) sections (strands) can be produced.

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Patent Owner(s)

Patent OwnerAddress
HENKEL AG & CO KGAAHENKELSTRASSE 67 DUESSELDORF 40589

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mueller, Burkhard Duesseldorf, DE 97 226
Neuba, Constanze Grevenbroich, DE 25 39

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