How to use: To use Super Star 30 Volume Cream Peroxide Developer,first mix it with a permanent hair color or lightener in a non-metallic bowl according to the product's instructions, typically a 1:1 or 1:2 ratio. Ensure the hair is clean and dry before applying the mixture evenly with a brush, from roots to ends. Leave it on for the recommended time, checking the hair periodically, then rinse thoroughly with water until it runs clear and follow with a conditioner.