Sebastian Professional Penetraitt Deep Strengthening & Repair Mask is a repairing formula for those who have damaged hair. Helps to strengthen the hair shaft. Protects your hair from breaking and developing split ends. Leaves hair without tangles and easier to style and maintain. Created with citric acid, coconut acid, glycerin, and wheat proteins. To use apply onto damp hair from roots to ends. Leave on for 3 minutes and rinse. This product comes in cream form. Weight is 5.1 oz each tube. Unisex product.