Kérastase Première Decalcifying Reparative Shampoo .

Kérastase Première Decalcifying Reparative Shampoo is a sulfate-free decalcifying shampoo for hair that is damaged or weakened by chemical treatments. It cleans the scalp and hair gently, and it helps remove excess calcium that builds up due to hard water. Because damaged hair absorbs more calcium, it becomes rigid and prone to breakage. However, with this formula, you are able to address that overload from the first wash. The shampoo transforms from a creamy texture into a smooth, rich lather. As it works, it targets calcium inside and on the surface of the hair. In fact, its dual action supports both detoxification and repair. As a result, hair becomes easier to detangle, and it feels more flexible. In addition, restoring keratin links helps improve the structure of the hair fiber over time.