| 摘要 |
The invention concerns an oxidation dyeing composition for keratinous fibres, and in particular human keratinous fibres such as hair, comprising, in a medium suited for dyeing, (a) as first coupling agent at least a 3,5-diamino-pyridine derivative suitably selected; (b) and as second coupling agent at least resorcin (1,3-dihydrobenzene) and/or one of its addition salts with an acid; (c) and as third coupling agent at least an oxidation base such as para-phenylenediamine and/or one of its addition salts with an acid. The invention also concerns the dyeing method using said composition.
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