Redken Color Extend Magnetics Sulfate-Free Shampoo gently cleanses color treated hair to enhance shine and hair color vibrancy. Color Extend Magnetic's formula features a multi-targeted delivery system with key ingredients to prevent hair color fade and promote the health of the hair. The Color Extend Magnetics System is acidic, which helps to balance the pH levels of the hair and care for the tone and vibrancy of professional color in between salon services. Sulfate-free shampoo for color treated hair Gently cleanses Features acidic formula to balance pH levels of the hair for enhanced hair color vibrancy