How to use: Mix the complete sachet of Back to Base Remover with 5, 10, or 20 volume developer based on the clients hair condition. Mix at a ratio of 1:2 to create a smooth paste with a non-metallic application brush. Apply only to dry hair that has been pre-lightened and treated with direct dyes or semi-permanent hair color. Process at room temperature, for up to 30 minutes checking every 5 minutes until the desired result is achieved. Remove paste immediately if the hair shows any signs of damage