Pureology Strength Cure Shampoo gently cleanses and strengthens damaged, color treated hair. This fortifying, sulfate free shampoo nourishes, repairs, and removes color-dulling residue while maintaining the hair fiber's strength. Strength Cure Shampoo includes Asta-Repair, Keravis, Ceramide, and Pureology's AntiFade Complex to replace hair's cysteine bonds, restore strength, and provide the ultimate color protection for color treated hair.