A packaging unit (kit-of-parts) for dyeing keratin fibers, comprising - packaged separately from one another - a) at least one container containing a cosmetic agent that contains at least one compound selected from the group of oxidation dye precursors, direct dyes and mixtures thereof, and at least one aminated silicone polymer containing at least one structural unit of formula and at least one structural unit of formula in which A represents a linear or branched C4-C8 alkyl group, and n represents integers from 1 to 4, wherein the cosmetic agent is present in the container as an aminated silicone polymer containing at least one structural unit of formula and at least one structural unit of formula, including at least one aminated silicone polymer of formula in a total of amount from 0.05 to 1.0 wt.%, based on the total weight of the cosmetic agent, in which R1 and R2 each independently represent a methyl group, x represents integers from 49 to 149, y represents integers from 1 to 10, and n represents 2 or 3, wherein the cosmetic agent additionally contains a cyclic aminated silicone polymer in a total amount of from 0.015 to 0.3 wt.% based on the total weight of the cosmetic agent, wherein the cyclic aminated silicone polymer has the formula in which x represents integers from 49 to 149, and y represents integers from 1 to 10, b) at least one container containing an oxidizing agent preparation which, in a cosmetically acceptable carrier, contains at least one oxidizing agent in a total amount of from 0.5 to 15 wt.%, preferably from 0.75 to 10 wt.%, more preferably from 1 to 7.5 wt.%, particularly preferably from 1.25 to 7 wt.%, in particular from 1.5 to 6.0 wt.%, based on the total weight of the oxidizing agent preparation. a) at least one container containing a cosmetic agent that contains at least one compound selected from the group of oxidation dye precursors, direct dyes and mixtures thereof, and at least one aminated silicone polymer containing at least one structural unit of formula and at least one structural unit of formula in which A represents a linear or branched C4-C8 alkyl group, and n represents integers from 1 to 4, wherein the cosmetic agent is present in the container as an aminated silicone polymer containing at least one structural unit of formula and at least one structural unit of formula, including at least one aminated silicone polymer of formula in a total of amount from 0.05 to 1.0 wt.%, based on the total weight of the cosmetic agent, in which R1 and R2 each independently represent a methyl group, x represents integers from 49 to 149, y represents integers from 1 to 10, and n represents 2 or 3, wherein the cosmetic agent additionally contains a cyclic aminated silicone polymer in a total amount of from 0.015 to 0.3 wt.% based on the total weight of the cosmetic agent, wherein the cyclic aminated silicone polymer has the formula in which x represents integers from 49 to 149, and y represents integers from 1 to 10, A represents a linear or branched C4-C8 alkyl group, and n represents integers from 1 to 4, wherein the cosmetic agent is present in the container as an aminated silicone polymer containing at least one structural unit of formula and at least one structural unit of formula, including at least one aminated silicone polymer of formula in a total of amount from 0.05 to 1.0 wt.%, based on the total weight of the cosmetic agent, R1 and R2 each independently represent a methyl group, x represents integers from 49 to 149, y represents integers from 1 to 10, and n represents 2 or 3, wherein the cosmetic agent additionally contains a cyclic aminated silicone polymer in a total amount of from 0.015 to 0.3 wt.% based on the total weight of the cosmetic agent, wherein the cyclic aminated silicone polymer has the formula x represents integers from 49 to 149, and y represents integers from 1 to 10, b) at least one container containing an oxidizing agent preparation which, in a cosmetically acceptable carrier, contains at least one oxidizing agent in a total amount of from 0.5 to 15 wt.%, preferably from 0.75 to 10 wt.%, more preferably from 1 to 7.5 wt.%, particularly preferably from 1.25 to 7 wt.%, in particular from 1.5 to 6.0 wt.%, based on the total weight of the oxidizing agent preparation.