Wonder no Yellow mask Indicated for blonde, super-lightened, bleached, or gray hair Formulated with violet pigment that reduces unwanted yellow reflections Leaves hair with a cool reflection, soft, shiny, and silky Amplifies and prolongs the effectiveness of the anti-yellow Shampoo Usage: After washing hair with the anti-yellow Shampoo, wear disposable gloves and apply to towel-dried hair on lengths and ends Leave on for 3 to 5 minutes and rinse thoroughly.