Oxidation dyeing composition for keratinous fibres comprising a n-(2-hydrobenzene)-carbamate or a n-(2-hydroxy-benzene)-urea and a pyrazolopyrimine, dyeing methods

摘要

The subject of the invention is a composition for the oxidation dyeing of keratinous fibers, and in particular human keratinous fibers such as hair, comprising at least one oxidation base, chosen from the pyrazolopyrimidines, and, as coupler, at least one N-(2-hydroxybenzene)carbamate or one N-(2-hydroxy-benzene)urea of formula (I), their use as coupler for the oxidation dyeing of keratinous fibers, and the oxidation dyeing methods using them.