Deepest, darkest black permanent hair dye kit for 100% coverage with high shine. May fade with time but won't wash out. Suitable for roots up to 2.5cm long. Colour and length of duration will depend on porosity, length, fineness and condition of hair, as well as any previous treatments. For best results use on undyed hair not suitable for use on very light or bleached blonde hair without pre pigmentation. Follow with bleach london live forever shampoo and conditioner to help maintain darkness and shine. Box contains colourant, developing lotion, repairing treatment, mask, gloves and instructions.