Abstract: The present invention relates to a composition for the oxidation dyeing of keratin fibers, in particular human keratin fibers such as the hair, comprising at least one diaminopyrazole derivative as oxidation base in combination with at least one suitably selected heterocyclic coupler, and to the dyeing process using this composition with an oxidizing agent.

Abstract: The invention relates to a ready-for-use composition for the oxidation dyeing of keratinous fibres, in particular human keratinous fibres such as hair, including an oxidation dye precursor in combination with 4-hydroxyindole, a benzene-based coupler and an oxidizing agent in an alkaline medium, and to the dyeing process making use of this composition.

Abstract: A two part aqueous composition for coloring and providing durable conditioning to human hair which forms a gel on mixing of an alkaline aqueous lotion first part having a pH of from about 7 to about 11 containing from about 0.005% by weight to about 5% by weight of at least one primary intermediate and at least one coupler for the formation of oxidation dyes, from about 0.1% to about 5% of a cationic polymer, from about 0.5% to about 15% by weight of an anionic or amphoteric surfactant or mixture thereof and at least 70% by weight water, and an aqueous developer second part having a pH of from about 2 to about 6 containing from about 0.5% by weight to about 40% by weight of a peroxide oxidizer and from about 0.1% by weight to about 20% by weight of an anionic polymer, the anionic polymer being characterized in that it is insoluble in the developer and dissolves in the gel which forms when the lotion and developer are mixed.