Osmo Super Silver No Yellow Mask (100ml) is a sulphate-free mask for use on grey, bleached and super-lightened hair. Formulated with special, violet pigments, it helps remove unwanted yellow hues, changing hair colour to silver/ash tones. Suitable for use on both natural and synthetic hair, it boosts radiance and transforms colour vibrancy. Completely cruelty-free. Directions of use: Apply to towel-dried hair from mid-lengths to ends and leave for 3-5 minutes. Rinse thoroughly. Applying heat will intensify the treatment.For optimum results, use in conjunction with Osmo Super Silver No Yellow Shampoo.