OSMO Super Silver No Yellow Shampoo & Mask Duo 1000ML. Free Delivery Description; - OSMO Super Silver No Yellow is an intense, sulphate free treatment shampoo specifically formulated for use on super lightened, grey or bleached hair. Infused with strong violet pigments to help remove unwanted yellow tones, hair colour is transformed and radiance restored. Completely cruelty-free. How to Use; - Apply directly to wet hair, - Massage well and leave for approximately 1-5 minutes, - Rinse thoroughly and repeat if necessary, - For best results, follow with OSMO Super Silver No Yellow Mask