| 摘要 |
Provided is a hair dye composition containing a direct dye (1): [wherein, R1, R2, R3, R4, R5 and R6 each independently represents a C1-4 alkyl group, R7 represents a hydrogen atom or a C1-4 alkyl group, and X- represents an anion]. This hair dye composition undergoes a small change in color tone even after storage because it contains the direct dye (1) which has high stability against any one of an alkali agent, oxidizing agent and reducing agent, and at the same time, has markedly high hair dyeing power and exhibits excellent light resistance, washing resistance, perspiration resistance, friction resistance and heat resistance.
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