John Frieda Violet Crush Purple Shampoo 250ml for Brassy, Blonde Hair. Neutralises unwanted brassy tones with Crushed Violet Pigments. This shampoo gradually neutralises unwanted yellowness as it gently cleanses, without over toning, to restore bright blonde. It is suitable for those who loved the Sheer Blonde Colour Renew purple shampoo, as it is the same great formula with a packaging makeover. Vegan Friendly. Lose the brassiness for bright, beautiful blonde.