| abstract |
An object of the present invention is to strongly dye hair with a clear color tone without decomposing the dye during the hair dyeing process, having excellent resistance to sunlight, hair washing, sweat, friction and heat, To provide a hair dye composition that is stable to an oxidizing agent, has high dyeability, and does not easily fade over time, and a hair dyeing method using the same. A hair dye composition containing a direct dye having a dissociable group represented by the following general formula (1). DYE- (L) n -DIS (1) [DYE represents a dissociative dye residue having a dissociative hydrogen atom in the dye chromophore and having a maximum absorption at 400 to 700 nm in the dissociated state, L represents a divalent linking group, n represents 0, 1 or 2 is indicated, and DIS represents a dissociable group. The two L's when n is 2 may be the same or different. ] [Selection figure] None |