HAIR COLOURING METHOD EMPLOYING A CHROMENE OR CHROMAN DYE, A PARTICULAR ORGANIC COMPOUND, AN OXIDIZING AGENT, AN ALKALINE AGENT AND A METAL SALT

摘要

The present invention relates to a method for colouring keratin fibres, comprising: —a first step of applying to the fibres a dyeing composition (a) comprising one or more dyes chosen from chromene dyes and chroman dyes, and one or more liquid organic compounds having a Hansen so lubility parameter δH of less than or equal to 16 Mpa1/2, then—a second step of applying to the fibres an oxidizing composition (b) comprising one or more oxidizing agents and one or more alkaline agents, one or more metal salts and/or metal oxides being present in at least one of the compositions (a) and (b), and/or being applied during an additional step by means of a composition (c). The invention likewise relates to a kit suitable for implementing this method.

主权项

1. Method for colouring keratin fibres, such as human keratin fibres, and more particularly the hair, comprising:
a first step of applying to the fibres a dyeing composition (a) comprising one or more dyes chosen from chromene dyes and chroman dyes, and one or more liquid organic compounds having a Hansen solubility parameter δH of less than or equal to 16 Mpa1/2, then a second step of applying to the fibres an oxidizing composition (b) comprising one or more oxidizing agents and one or more alkaline agents, the said method further comprising the application to the fibres of one or more metal salts and/or metal oxides, present in at least one of the compositions (a) and (b), and/or applied during an additional step by means of a composition (c).