Crazy Colour Hair Shampoo Blue 250ml. Vibrant and pigmented Blue Shampoo to refresh and prolong the life of your blue hair and prevent it from fading. Can be used with any blue shade and is ammonia and sulphate-free. Available in 4 different styles. 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!