Shampoo hair using a deep cleansing shampoo (do not condition hair), apply to freshly washed dry hair. Empty desired amount into colouring bowl, apply evenly with tint brush. Do not apply to scalp, saturate hair thoroughly. Comb evenly through the hair until it becomes frothy. Cover hair with a plastic cap, leave for 15-30 minutes or longer, for the more intensity add heat. Rinse hair in cold water away from face and body until it runs almost clear. Fades gradually with each shampoo. Wash hair in cold water to maintain colour.