Eliminates color-destructive sulfates and produces a gentle safe cleanser. Design for extend the life of color treated hair. Penetrate deep into the hair with nano-particles, creating a bond which helps in the reduction of split ends and damage. Enhances and illuminates hair color with Optical Brighteners. Sulfate Free Colortek Sulfate Free Color Fusion Shampoo is designed with Bio-Nanotechnology, which utilizes organic and mineral ingredients on a molecular level to deep cleanse the hair shaft, lock in your color, and help reduce split ends. It leaves your hair with a healthier, shinier appearance.