Agent for Oxidatively Dyeing Keratin Fibers
AssigneeHenkel AG & Co. KGaA
InventorsThomas Hippe, Astrid Kleen, Hartmut Manneck, Stefan Hoepfner, Tugce Cansev
Life of this patent
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Abstract
An agent for oxidatively dyeing keratinous fibers, and in particular human hair, using at least one developer-type oxidation dye precursor and at least one coupler-type oxidation dye precursor in combination with isatin to provide a broad spectrum of rich colorations having high fastness properties, without the use of couplers of the resorcinol type and without impairing product safety.
Claims20
An agent for oxidatively dyeing keratinous fibers, comprising, in a cosmetic carrier,
- (a) at least one developer-type oxidation dye precursor, and
- (b) at least one coupler-type oxidation dye precursor, and
- (c) isatin.
A multi-component packaging unit (kit-of-parts) for oxidatively dyeing keratinous fibers, comprising, packaged separately from one another,
- a first container having a dyeing agent (F), which contains
- (a) at least one developer-type oxidation dye precursor, and
- (b) at least one coupler-type oxidation dye precursor, and
- (c) isatin, and
- a second container having an oxidizing agent composition (Ox), which contains
- (d) at least one oxidizing agent selected from the group consisting of hydrogen peroxide and its addition products to organic or inorganic compounds.
Dependencies are inferred from the claim text.