Provided is a hair dyeing composition, containing a first part containing (a) a nitrogen-containing compound expressed by the general formula (1) or a salt thereof and a second part containing a component (b) of an oxidizing agent, wherein a pH upon use is 7.5 to 12,
wherein n=1 or 2, R1 and R3 to R5 represent H, a hydroxy group, and an alkyl group with C12 or less optionally having a substituent, R2 represents a hydroxy group, —R or —OR, in which R means the same as R1 to R5, and two or more of R1 to R5 may be taken together to form a 3 to 8 membered-ring optionally having a substituent.
提供了一种染发组合物,包含第一部分,其中包含(a)通式(1)表示的
含氮化合物或其盐,以及第二部分,其中包含氧化剂组分(b),使用时的pH值为7.5至12,其中n为1或2,R1和R3至R5表示H,羟基和C12或更少的烷基,可选地具有取代基,R2表示羟基,-R或-OR,其中R的含义与R1至R5相同,R1至R5中的两个或两个以上可以结合形成3至8成员环,可选地具有取代基。