| abstract |
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, n nwherein n=1 or 2, R 1 and R 3 to R 5 represent H, a hydroxy group, and an alkyl group with C12 or less optionally having a substituent, R 2 represents a hydroxy group, —R or —OR, in which R means the same as R 1 to R 5 , and two or more of R 1 to R 5 may be taken together to form a 3 to 8 membered-ring optionally having a substituent. |