Osmo Super Cool Zero Orange Mask (1000ml) is an intensely hydrating, sulphate-free treatment mask which has been specially formulated for use on salon-lightened brunette and dark hair tones. Formulated with super blue pigments to help counteract unwanted brassy, red or copper reflections and promote cool tones, this nourishing formula helps restore colour balance, leaving the hair looking radiant and fresh. Completely cruelty-free. Directions of use: Apply to towel-dried hair from lengths to ends and leave for 3-5 minutes. Rinse thoroughly with warm water. Applying heat will intensify the treatment.