This shampoo is an intense, sulphate free treatment shampoo specifically formulated for use on superlightened grey or bleached hair. Infused with super strong violet pigments to help remove unwanted yellow tones, hair color is transformed and radiance restored. Directions: Apply directly to wet hair, massage well and leave for aproximately 6-8minutes. Rinse thoroughly and repeat if necessary. For best results, use Osmo Violet Mask