Oxidative hair lighteners with special aminated silicone polymers

A cosmetic agent for changing the color of keratin fibers, comprising, in a cosmetically acceptable carrier:

• a) at least one compound, selected from the group consisting of:
• oxidative dye precursors, direct dyes, and mixtures thereof,
• b) at least one aminated silicone polymer, including at least one structural unit of the formula (I) and at least one structural unit of formula (II)
• in which
• A stands for a linear or branched C4-C8 alkyl group, and
• n stands for integers from 1 to 4, and
• a cyclic aminated silicone polymer in a total amount of from 0.003 to 1.5% by weight in relation to the total weight of the cosmetic agent, wherein the cyclic aminated silicone polymer has the formula (IV)
• in which
• x stands for integers from 0 to 1,999;
• wherein the cosmetic agent does not include any acid selected from the group consisting of:
• carboxylic acids having 8 to 30 carbon atoms, the ether carboxylic acids having 8 to 30 carbon atoms, the ether phosphoric acids having 8 to 30 carbon atoms, the phosphoric acids having 8 to 30 carbon atoms, and mixtures thereof.