Achieve the ultimate color protection and hair softness with Redken Color Extend Magnetics Shampoo with Redken's exclusive RCT Protein Complex. This shampoo treats�the root, core, and tip of the hair. The sulfate free formula gently cleanses color treated hair for four weeks of color vibrancy and radiance.* With Color Extend Magnetic's new smart, multi-targeted delivery system, soy protein adds structure for root lift, arginine maintains health at the core, and sepicap restore ends of damaged hair.