Usage: 1.Make sure the hair is cut to a maximum of 4 mm. 2.Wash your hair with shampoo and dry your hair thoroughly. 3.Remove the mold and place it on the mold. 4.Press firmly on the entire area of the mold. 5.Apply bleach or hair dye to the mold area. 6.Wait for 15 minutes, then remove the mold and wash the hair.