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

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United States of America Patent

PATENT NO 9925133
SERIAL NO

15435180

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Abstract

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A method for dyeing keratinous fibers, in particular, human hair, in which, after a thickened pre-treatment agent (M1) containing no oxidation dye precursors has been applied and allowed to react, a coloring agent (M2) is applied and allowed to react immediately thereafter and without rinsing. By carrying out said method, hair can be colored in a dyeing step and simultaneously multi-tonal dyeing with highlights or lowlights can be achieved.

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Patent Owner(s)

Patent OwnerAddress
HENKEL AG & CO KGAADUSSELDORF

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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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