Coiffissimo Professional EasyOxy Revelateur Creme 1.5% - 5vol - 1000mlIn a non metallic bowl, mix 30g of powder with 60g of 10, 20, 30 or 40 volume oxidant, dilution ratio 1: 2. Processing time between 15 and 60 minutes depending on the base color of the hair, the desired degree of lightening, the condition of the hair, the type of technique, the temperature of the working environment, the volumes of peroxide used and their quantity. Professional advice: Prefer low oxidant strengths which develops better results. The 40