Toning: Neutralizes brassiness and yellow tones to brighten hair. Bond-building technology: Contains patented technology to repair and strengthen hair bonds. Hydration: Leaves hair feeling soft and hydrated. Customizable toning: Apply for 1-3 minutes for less intense toning, or up to 5 minutes for more intense results. Formula: Sulfate-free, paraben-free, phosphate-free, and pH-balanced. Usage: Suitable for all blonde, lightened, and grey hair, whether natural or color-treated.