Preparation of the bleaching mixture: Put the bleaching powder in a non-metallic mixing bowl and mix with Oxydant 3%, 6% or 9% in a ratio of 1:2 until you get a smooth/creamy bleaching mass. The lightening process is gentler on the hair when using a lower concentrated developer. Use a maximum of 6% developer for batch or whole-head application. Mixing ratio example: 25g powder + 50g developer. Application: Apply bleaching mass evenly to unwashed hair. The exposure time depends on the condition of the hair and the desired lightening result. Check the degree of lightening every 5 - 10 minutes. Do not exceed the maximum exposure time of 45 minutes. After the end of the exposure time, rinse carefully with lukewarm water. Wash with a care shampoo and treat with a neutralizing conditioner / treatment.