| abstract |
(57) [Summary] [Structure] The following general formula (1) A keratin fiber dyeing composition containing a 2-alkyl-4-alkoxy-5-aminophenol derivative represented by the formula (1) or a salt thereof, and the compound (1) as a coupling substance and a color developing substance. [Effect] The compound (1) of the present invention as a coupling substance When used, it is possible to obtain a keratin fiber dyeing composition which is excellent in saturation, dyeing power and fastness, and has good storage stability. |