The present invention relates to an aqueous oxidative colouring composition for keratin fibres especially human hair with improved conditioning effect, improved colour fastness against washing and for achieving homogeneous even colouration. The object of the present invention is an aqueous composition for colouring keratin fibres especially human hair, based on at least one oxidative dye precursor, optionally at least one coupling agent and/ at least one direct dye in a cosmetically acceptable medium characterised in that it comprises at least one grafted aminated silicone polymer obtained from organopolysiloxanes and polyethyl oxazolines with an oxazoline content of at least 55% by weight and with an organopolysiloxane content of maximum 45% by weight, all values are calculated to total of the molecule.
