The Color Extend Blondage Shampoo by Redken in 300 ml is an innovative treatment formulated to neutralize unwanted yellow tones in blonde hair. Thanks to its technology with purple pigments, it restores brightness and freshness to the color while protecting the hair fiber. Suitable for natural, bleached, or treated hair, this shampoo prolongs brightness and maintains the intensity of blonde for longer. Ideal for those who want a vibrant color without warm undertones, ensuring professional results at home.