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 powerful system removes calcium build up that causes damage and restores up to 99% of hair’s original strength*. It repairs persistent damage, reversing stiffness and dullness for 73% shinier hair**, and 2x smoother hair***. Hair is 93% stronger***.