Redken Acidic Color Gloss Activated Glass Gloss Treatment is formulated with revolutionary technology that combines an advanced pH formula and Acidic Shine Complex, for results that not only look but feel healthy, with up to 3-days of sleek, frizz controlled hair Citric Acid works by restoring the hair back to its healthiest pH [pH 4.5-5.5], sealing in the cuticle, so your shine is locked-in and your hair left incredibly glossy and smooth, for up to 72 hours of glass shine . The Exclusive Acidic Shine Complex is formulated with a blend of amino acids and conditioning agents that deposit glossing molecules, further supporting the look of healthy, glass-like shine with a single application. Consumer test using Acidic Color Gloss Activates Glass Gloss Treatment. based on consumer test - acidic colour gloss system of shampoo, treatment and leave in. Redken Acidic Color Gloss Activated Glass Gloss Treatment 237ml in Clear