A product for the oxidative coloring and/or lightening of keratinic fibers, includes: 1) a dispenser, which has two chambers (A) and (B) separate from one another, and has an outlet opening (C), which is in communication with chamber (A) and with chamber (B), 2) a preparation (a) in chamber (A), including in an aqueous cosmetic carrier one or more thickening polymers in a total amount by weight (G1) of 0.1 to 40% by weight, based on the total weight of preparation (a), 3) a preparation (b) in chamber (B), including in an aqueous cosmetic carrier one or more thickening polymers in a total amount by weight (G2) of 0.1 to 40% by weight, based on the total weight of preparation (b). The weight ratio G1/G2 has a value of 0.3 to 3.0.