Manic Panic Hair Dye Semi Permanent Creamtone Collection 118ml. Creamtone is their signature pastel range. For best results pre-lighten hair to an even level 10 platinum blonde using Manic Panic Flash Lightning 30 or 40 volume bleach. Hair dye should last in the hair for up to 4-6 weeks. Manic Panic started the vivid hair colour revolution in New York back in 1977. They changed the world with their creative, vibrant and electrifying semi permanent hair colours. This world famous hair colouring brand is used by countless celebrities, models, and celebrity stylists. Using superior ingredients in these high quality rich formulas that are guaranteed Vegan and PPD free. The Cruelty-free colours promise a healthy nourished result.