Lighten up with bleach london's post bleach toning kit! The nourishing, semi permanent dye neutralises yellows and turn brassy blondes bright, white, silver or platinum while the reincarnation mask helps keep bleached hair healthy and hydrated. Lasts 16 20 washes. Colour and length of duration will depend on porosity, length, fineness and condition of hair, as well as any previous treatments. For best results pre lighten hair with bleach london total bleach, diy dip dye of beach lights. Box contains colourant, developer lotion, repairing treatment mask, gloves and instructions.