A preparation for coloring keratin fibers containing dyes and/or dye precursors, at least one silicone oil and/or silicone gum and at least one polymer which contains at least one monomer unit corresponding to formula (I): ##STR00001## in which n is a number of 1 to 3 and Y is a physiologically compatible anion.Also disclosed is a method of applying this preparation to keratin fibers.