Oxidative dye in red shades with improved fastness and improved homogeneity
AssigneeHenkel AG & Co. KGaA
InventorsJING HODES, SANDRA HILBIG, DANIELA KESSLER-BECKER, MELANIE MOCH
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Abstract
The subject of the present application is an agent for the oxidative dyeing of keratinous fibers, in particular human hair, which contains in a cosmetic carrier (A) at least one oxidation dye precursor with 4,5-diaminopyrazole as the basic structural element according to the structural formula (I) and furthermore (B) glucoheptonic acid and/or at least one of its physiologically tolerated salts and/or lactones. The composition as contemplated herein further comprises (C) at least one oxidizing agent other than atmospheric oxygen.
Claims20
An agent for the oxidative dyeing of keratinous fibers, comprising in a cosmetic carrier
- (A) at least one oxidation dye precursor of structure (I) and/or one of its physiologically tolerable salts
- wherein R1 and R2 are independently hydrogen or a linear or branched C1-C10 alkyl group which may be substituted with one to ten hydroxyl groups, R1 and R2 not being hydrogen at the same time, furthermore
- (B) glucoheptonic acid and/or at least one of its physiologically tolerated salts and/or lactones, and
- (C) at least one oxidizing agent other than atmospheric oxygen.
A multicomponent kit-of-parts for oxidative dyeing of keratinous fibers, comprising at least two separately prepared components (K1) and (K2), wherein
- the first component (K1) in a cosmetic carrier comprises
- (A) at least one oxidation dye precursor of the structure (I) and/or one of its physiologically tolerated salts
- wherein R1 and R2 are independently hydrogen or a linear or branched C1-C10 alkyl group which may be substituted with one to ten hydroxyl groups, R1 and R2 not being hydrogen at the same time, furthermore
- (C) optionally at least one oxidizing agent selected from persalts, peroxodisulfate salts and/or peroxomonosulfate salts,
- the second component (K2)
- (C) comprises water,
- wherein
- (B) the kit-of-parts comprises glucoheptonic acid and/or at least one of its physiologically tolerated salts and/or lactones.
Dependencies are inferred from the claim text.