Water is good for you. But not so great for your hair. The calcium in your shower water can lead to persistent hair damage leaving it rigid dull & brittle. This innovative dual action formula removes calcium buildup that causes damage and reconnects broken links between keratin chains for less breakage. It repairs persistent damage reversing stiffness and dullness for enhanced shine. A highly concentrated dual action repairing pre-shampoo treatment to repair all types of damaged hair Apply on damp hair before shampoo and leave on for 5 minutes. Don’t rinse and then layer with Première Shampoo.