Multi-tone hair dyeing method in three steps

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United States of America Patent

PATENT NO 11918671
APP PUB NO 20230031764A1
SERIAL NO

17782090

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for dyeing hair is disclosed. The method comprises (1) treating hair with an oxidative colorant agent (A); (2) subsequent to (1), treating the hair with a CH-acidic hair dyeing agent (B); and (3) subsequent to (2), treating the hair with a cosmetic decolorizing agent (Ox). The method comprises a time interval between (1) and (2) of from about 1 minute to about 1.5 months, and a time interval between (2) and (3) of from about 1 minute to about 1.5 months. A process for multitonal dyeing of hair is also disclosed. The process comprises preparing an oxidative colorant agent (A); treating hair with the agent (A) to give a colored hair; preparing a CH-acidic hair dyeing agent (B); treating the colored hair with the agent (B) to give a dyed hair; and treating the dyed hair with a cosmetic decolorizing agent (Ox) to give a multitonal dyed hair.

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Patent Owner(s)

Patent OwnerAddress
HENKEL AG & CO KGAA40589 DÜSSELDORF

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hilbig, Sandra Bochum, DE 28 2
Kessler-Becker, Daniela Leverkusen, DE 44 14
Kruck, Constanze Grevenbroich, DE 32 2
Moch, Melanie Dormagen, DE 31 12

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