L'oreal professionnel 6% 20 volume oxidant 100ml (filling from the bottle) It is used to ensure oxidation in the application of cream hair dyes. It has been specially developed to provide better results for oxidant cream - preference or majirel cream hair dyes. Usage: Oxidant cream no:1 (20 volume) should be used to lighten the existing hair color up to 1 or 2 tones and to cover white hair. The amount of oxidant cream to be used should always be 1.5 times the amount of paint used. Namely, 50 g of Loreal Majirel 1 tube of cream hair dye should be mixed with 75 ml of oxidant cream.