Colour depositing formula neutralises brassy tones. Our highest concentration of direct dyes to combat unwanted red tones. Our Dark Envy green toning mask leaves hair more nourished and radiant appearance After using Dark Envy Shampoo, while wearing gloves apply to wet hair avoiding scalp area. Process up to 5 mins, depending on desired cooling effect. Rinse thoroughly. Style hair as usual. Use weekly for ongoing cooling effect.