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US 10,376,454 B2Granted
Products for the oxidative dyeing of hair in copper shades with improved gray coverage
AssigneeHenkel AG & Co. KGaA
InventorsConstanze Neuba, Burkhard Mueller
Life of this patent
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Abstract
Agent for the oxidative dyeing of keratinous fibers is provided herein. The agent includes in a cosmetic carrier (A) 1-(2-Hydroxyethyl)-4,5-diaminopyrazole and/or one of the physiologically-tolerated salts thereof. The agent further includes (B) 2,6-dihydroxy-3,4-dimethylpyridine. The agent also includes (C) p-phenylendiamine, toluene-2,5-diamine, 2-(2,5-diaminophenyl)ethanol and/or one of the physiologically-tolerated salts thereof.
Claims16
Agent for the oxidative dyeing of keratinous fibers, comprising in a cosmetic carrier:
- (A) 1-(2-Hydroxyethyl)-4,5-diaminopyrazole and/or one of the physiologically-tolerated salts thereof;
- (B) 2,6-dihydroxy-3,4-dimethylpyridine;
- and
- (C) toluene-2,5-diamine and/or one of the physiologically-tolerated salts thereof;
- wherein the weight ratio of (A) to (C) is from about 1.0 to about 8.0.
2 more elements
Agent for the oxidative dyeing of keratinous fibers, comprising in a cosmetic carrier:
- (A) from about 0.05 to about 3.0 wt. % of 1-(2-Hydroxyethyl)-4,5-diaminopyrazole and/or one of the physiologically-tolerated salts thereof;
- (B) from about 0.1 to about 1.2 wt. % of 2,6-dihydroxy-3,4-dimethylpyridine;
- and
- (C) from about 0.07 to about 0.7 wt. % of toluene-2,5-diamine and/or one of the physiologically-tolerated salts thereof;
- and
- (D) from about 0.001 to about 0.5 wt. % of resorcin, 4-chlorresorcin, and/or 2-methylresorcin;
- wherein all amounts are relative to a total weight of the agent;
- and
- wherein the weight ratio of (A) to (C) is from about 1.0 to about 8.0.
6 more elements
Dependencies are inferred from the claim text.