| 摘要 |
<p>Provided is a one-pack type hair dye composition containing an indoline derivative (1) or salt thereof and an amine (2) or salt thereof and having a pH of 8.5 to 11. Since it is capable of easily dyeing the hair in a black color without a reddish cast with its excellent dyeing ability, or is capable of dyeing the hair in a shade ranging from a natural chestnut color to a black color without a reddish cast by using ammonia in combination, it is suited for covering gray or white hair of those having naturally black hair. <CHEM> H2N-CH2-R wherein in the formula (1), R<1>, R<4> and R<5> each represents H, C1-4 alkyl or C2-20 acyl and R<2> and R<3> each represents H or C1-4 alkyl, while in the formula (2), R represents H, C1-5 alkyl which may be substituted with hydroxyl, or phenyl which may have a substituent.</p> |
