COLORANTS WITH TRANSITION METAL COMPLEXES

摘要

The invention relates to agents for colouring fibres containing keratin, especially human hair, containing at least one dye pre-product and 0.0001 to 1.0 wt. % of a transition metal complex. Said transition metal complex is made up of one or more transition metal cations chosen from the following: iron, cobalt, manganese, molybdenum, ruthenium and/or vanadium; and at least one bidentate or multidentate ligand, at least one co-ordination point thereof being a nitrogenous heterocycle. The inventive agents enable the quantity of oxidant to be considerably reduced and hair to be dyed in the neutral pH range.