Abstract: The subject matter of the present invention is a method for oxidative lightening and/or coloring of keratinic fibers, in particular of hair, wherein a) a pretreatment agent that contains at least one 4-morpholinomethyl-substituted silicone of formulas (V) is applied onto the keratinic fibers, in particular onto the hair, b) subsequently, within a time span from one second to 24 hours after step a), a coloring and/or lightening agent is applied onto the keratinic fibers, which agent is obtained by mixing a composition (A) that contains at least one alkalizing agent with a composition (B) that contains, in a cosmetic carrier, at least one oxidizing agent, where the composition (B) contains at least one acylpyridinium derivative of formula (Acylpyr-I), (Acylpyr-I).