| 摘要 |
Hair dye composition comprising a 5-arylpenta-2,4-dienylcarbonyl compound or salt of formula (I). Agent for dyeing keratin-containing fibers, especially human hair, containing as coloring component at least one 5-arylpenta-2,4-dienylcarbonyl compound of formula (I) or a physiologically acceptable salt of this: R<1> = H or 1-4C alkyl R<2> and R<3> (same or different) = H, halo, 1-4 C alkyl, 1-4C alkoxy, hydroxy-(1-4C)-alkoxy, hydroxy, nitro, amino group which is optionally substituted by 1-4C alkyl groups or which may be a constituent of a heterocycle, or a 1-4 C acyl group; or the two residues may together form a condensed-on benzene ring
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