Abstract: A multi-component packaging unit includes a first container containing a color changing preparation comprising, in a cosmetic carrier, a color-changing component and a second container packaged separately from the first container and containing an oxidizing agent preparation. The oxidizing agent preparation comprises at least two phases separated from one another. A first phase has an aqueous phase that comprises, in a cosmetically acceptable carrier, a chemical oxidizing agent and an anionic polymeric thickener chosen from homo- and copolymers of acrylic acid and methacrylic acid. A second phase has a hydrophobic phase that comprises an oil chosen from paraffin oil, liquid carboxylic acid esters of C2 to C8 monoalkanol with a mono- or dicarboxylic acid, and combinations thereof.

Abstract: Thickened oxidative preparations are provided herein. In one embodiment, a cosmetic agent for changing the color of keratinic fibers is provided. The cosmetic agent includes a preparation (M1) containing a color-changing component and an oxidizing agent preparation (M2) containing in an aqueous, cosmetic carrier at least hydrogen peroxide as a chemical oxidizing agent and an anionic, polymeric thickener selected from crosslinked or uncrosslinked polyacrylic acid polymers. The cosmetic agent has a viscosity of about 5 to about 100 Pa s. The cosmetic agent is prepared directly before use by blending preparation (M1) with oxidizing agent preparation (M2).