The invention concerns compounds derived from diaminopyrazole of formula (I), wherein: Ar is a 5- or 6-membered heteroaromatic radical capable of being condensed with one or several heteroaromatic cycles each comprising 5 or 6 members, and their physiologically acceptable addition salts with and acid. The invention also concerns compositions containing such a compound for oxidation dyeing of keratinous fibers and the method using said compositions
本发明涉及公式(I)的
二氨基吡唑衍
生物,其中:Ar是5-或6-成员杂环芳基基团,能够与一个或多个包含5或6个成员的杂环芳香族环缩合,以及它们与酸的生理上可接受的加成盐。本发明还涉及含有这种化合物的组合物,用于角蛋白纤维的氧化染色以及使用该组合物的方法。