Kerastase Resistance Bain Force Architecte Shampoo is a new and improved shampoo formula that rebuilds and strengthens the hair fiber at all levels of hair erosion. The shampoo reinforces the internal substance of weakened hair and improves the resistance deep down for greater vitality and substance. It is a reconstructing shampoo for brittle, very damaged hair and split ends. This shampoo features patented Intra-Cylane to help prevent breakage and split ends. It Smoothes and protects the surface while reconstructing the hair fiber intensifying its strength from root to end. Great for brittle, very damaged hair and split ends. Leaves hair soft, strong and healthy looking. Smoothes and shields hair surface while enhancing its vitality from root to end. Helps re-construct and fortify hair fiber at all levels of hair erosion. Hair-rebuilding & reinforcing shampoo.