Stock up and save with this 500ml Supersize of Redken Acidic Color Gloss Conditioner. Level up your colour-care and activate glass-like shine up to 3-days* using the Acidic Color Gloss Conditioner. Redken Acidic Color Gloss Conditioner is a moisture-boosting formula works to give your hair colour fresh vibrancy and a glossy finish with +76% glass-like shine*. Citric Acid works by rebalancing the hair back to its healthiest pH [pH 4.5-5.5], sealing in the cuticle, so your colour is locked in and protected from external aggressors that contribute to colour fade. The conditioner's ultra-nourishing properties smooth each strand from root to tip, helping hair feel hydrated and nourished for up to 72 hours after a single use**. With Redken's Game-Changing Acidic Shine Complex, you can now level up your colour-care by activating a professional gloss at home. Formulated with a blend of amino acids and conditioning agents, the complex works by depositing glossing molecules across the hair for mirror-like shine. With every application achieve glass hair that not only looks but feel healthy. *Consumer test using full-system of Acidic Color Gloss **based on consumer test - acidic color gloss system of shampoo & conditioner