The present invention relates to a process for dyeing keratin fibers in which a mixture is applied to the fibers, this mixture being obtained from: —a dye composition comprising at least one oxidation dye precursor, and—anoxidizing composition comprising at least one chemical oxidizing agent, —at least one of the compositions being dispensed from a pressurized container, —the mixture of the two compositions comprising at least one nonionic oxyalkylenated saturated or unsaturated C8-C40 fatty acid amide, and also to a device suitable for performing this process.
