Maintain your blonde between salon visits with the L'Oreal Elvive Colour Protect Anti-Brassiness Purple Shampoo. How does it work? Purple colour is the opposite to yellow on the colour wheel, the violet pigments in our formula counteract the unwanted tones in the hair to neutralise and correct in just one use. Our new specialist colour correcting Purple formula nourishes hair & neutralises unwanted yellow, orange, and brassy tones in just one use, to help leave hair looking bright and beautiful.