| 摘要 |
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.
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