The Bleach London Super Cool Colour is a gentle semi-permanent dye that instantly illuminates the hair with a wash of eye-catching pigment.Suitable for all hair types, the conditioner-based formula lasts between 3-30 washes and helps to nourish the strands while you colour. Choose from a vibrant array of shades ranging from fiery amber to dramatic ultraviolet and bubblegum pink to icy white.