A product for oxidatively dyeing and/or lightening keratin fibers, comprising a dispenser which is a pressurized aerosol container that has - two chambers and that are separated from one other, - an outlet opening which is connected to chamber and to chamber, the outlet opening being an aerosol dispensing device, a preparation (a) in chamber, containing in a cosmetic carrier - one or more thickening polymers in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (a), - one or more fat components in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (a), - at least one propellant gas from the group propane, propene, n-butane, iso-butane, iso-butene, n-pentane, pentene, iso-pentane, iso-pentene, air, nitrogen, argon, N 2 O and/or CO 2, a preparation (b) in chamber, containing in a cosmetic carrier - one or more thickening polymers in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (b), - one or more fat components in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (b), - at least one propellant gas from the group propane, propene, n-butane, isobutane, iso-butene, n-pentane, pentene, iso-pentane, iso-pentene, air, nitrogen, argon, N 2 O and/or CO 2, characterized in that - the weight ratio of G1/G3 is a value of 0.5 to 2.0 and - the weight ratio of G2/G4 is a value of 0.5 to 2.0. a dispenser which is a pressurized aerosol container that has - two chambers and that are separated from one other, - an outlet opening which is connected to chamber and to chamber, the outlet opening being an aerosol dispensing device, - two chambers and that are separated from one other, - an outlet opening which is connected to chamber and to chamber, the outlet opening being an aerosol dispensing device, a preparation (a) in chamber, containing in a cosmetic carrier - one or more thickening polymers in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (a), - one or more fat components in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (a), - at least one propellant gas from the group propane, propene, n-butane, iso-butane, iso-butene, n-pentane, pentene, iso-pentane, iso-pentene, air, nitrogen, argon, N 2 O and/or CO 2, - one or more thickening polymers in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (a), - one or more fat components in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (a), - at least one propellant gas from the group propane, propene, n-butane, iso-butane, iso-butene, n-pentane, pentene, iso-pentane, iso-pentene, air, nitrogen, argon, N 2 O and/or CO 2, a preparation (b) in chamber, containing in a cosmetic carrier - one or more thickening polymers in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (b), - one or more fat components in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (b), - at least one propellant gas from the group propane, propene, n-butane, isobutane, iso-butene, n-pentane, pentene, iso-pentane, iso-pentene, air, nitrogen, argon, N 2 O and/or CO 2, characterized in that - the weight ratio of G1/G3 is a value of 0.5 to 2.0 and - the weight ratio of G2/G4 is a value of 0.5 to 2.0. - one or more thickening polymers in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (b), - one or more fat components in a total amount by weight of 0.1 to 20 wt.%, based on the total weight of preparation (b), - at least one propellant gas from the group propane, propene, n-butane, isobutane, iso-butene, n-pentane, pentene, iso-pentane, iso-pentene, air, nitrogen, argon, N 2 O and/or CO 2, - the weight ratio of G1/G3 is a value of 0.5 to 2.0 and - the weight ratio of G2/G4 is a value of 0.5 to 2.0.