The present disclosure pertains to the field of cosmetics and concerns a cosmetic product for changing the natural colour of keratinous fibres, in particular human hair, comprising (i) at least one package (VP) comprising a water-soluble film (F), (ii) at least one cosmetic composition (KM) which is packaged in the package (VP) and contains at least one oxidizing compound, (iii) at least one cosmetic colour composition (FZ) which is packaged in the package (VP), wherein the oxidizing compound is a solid oxidizing agent. Furthermore, the present disclosure relates to a method for colouring hair.
