Protection for color-treated hair. IPN: interlock protein network. New. Color Extend Shampoo gently cleanses while helping to provide anti-fade protection to color-treated hair. Formulated with Redken's exclusive Interlock Protein Network and powerful Fade Resist Complex, it delivers a UV filter, conditioning cranberry oil, strengthening ceramide, and a protective micro-net technology to help safeguard color and defend against external aggressors. Haircolor stays vibrant and radiant with mirror-like shine. Safe for color-treated hair. redken.com. Made in USA.