OXIDATION DYEING PROCESS USING A COMPOSITION RICH IN FAT AND METAL CATALYSTS, AND CORRESPONDING DEV

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The present invention relates to a process for dyeing keratin fibers, in particular human keratin fibers such as the hair, comprising the use of one or more metal catalysts chosen from transition metal salts and rare-earth metal salts, and mixtures thereof and a composition (I) comprising at least 10% by weight of one or more fatty substances different from fatty acids, one or more oxidation dyes and one or more oxidizing agents.