| 摘要 |
The present invention relates to a multi-step process for dyeing keratin fibres, in particular human keratin fibres such as the hair, in which said fibres are treated with: i) at least one step i) of treating said fibres with a cosmetic composition Ci) comprising a) one or more titanium salts and b) optionally one or more particular carboxylic acids; ii) at least one step of dyeing with a cosmetic dye composition Cii) comprising c) one or more dyes chosen from oxidation dyes, synthetic direct dyes and dyes of natural origin, preferably chosen from ortho-diphenols; d) at least one liquid organic compound with a Hansen solubility parameter value δΗ of greater than 0 and less than 16 MPa1/2 and optionally e) one or more chemical oxidizing agents such as hydrogen peroxide or one or more hydrogen peroxide-generating systems; iii) optionally at least one step of intermediate rinsing of said fibres, said step being performed between step i) and ii) or between step ii) and i), depending on the order in which said steps i) and ii) are performed. |
