Redken's Color Extend Shampoo cleanses gently to remove impurities while protecting hair to leave it more manageable, refreshed, and shiny. This colour protecting shampoo improves hair strength, preventing breakage and split ends while delivering maximum colour vibrancy. It is formulated with our exclusive Interbond conditioning system and Fade Resist complex that uses powerful micro-net technology and UV filters to help lock in colour and protect against environmental stressors. This protective shampoo directly combats the four main causes of colour change or fade: Environmental aggressors, poor cuticle condition, colour altering minerals and water to leave you with hair that is vibrant, smooth, shiny, and more radiant.