Crazy Colour No Yellow Hair Shampoo Ultraviolet 250ml. Remove those unwanted yellow tones from your hair. Hair treatment shampoo specifically formulated for super lightened, grey, or bleached hair.This product can also be used as a toner after the bleaching process. Crazy Colour launched in Great Britain in 1977. Hair dye that will certainly turn heads. With an extensive range of rainbow colour hair dye, has recently launched its new pastel range. Crazy Colours ethos is ‘We want you to express yourself, unapologetically’. With 41 mixable shades which are Ammonia free as well as Vegan friendly and cruelty free. Ready to use which requires no peroxide. Live your life in colour!