MAGIC HAIR DYE SHAMPOO – Our hair dye shampoo contains active ingredients, the unique conditioning compound helps protect the hair fibers from the inside out. Only 15-20 minutes are needed, and grey hair will turn into its natural dark brown. This Semi-permanent hair color shampoo dyes hair in dark brown color quickly and absorbs effectively to nourish, and protect hair from falling and scalp itching. (Warm Note: Take a skin test before first use.)