A method of colouring porous material, especially human hair, is described, which method comprises applying to the material being coloured, in any desired order successively, or simultaneously, a) at least one capped diazonium compound and b) at least one cationic water-soluble aromatic coupling component, under conditions such that, initially, coupling does not take place, and then causing the capped diazonium compound present on the material to react with the coupling component.
描述了一种对多孔材料,特别是人的头发进行着色的方法,该方法包括以任何所需的顺序连续或同时将 a) 至少一种封端重氮化合物和 b) 至少一种阳离子
水溶性芳香族偶联组分涂抹到被着色的材料上,条件是最初不发生偶联,然后使材料上存在的封端重氮化合物与偶联组分发生反应。