Achieve a glossy shine for up to 3 days with Redken's Acidic Color Gloss Activated Glass Gloss Treatment. Utilizing advanced pH technology and the Acidic Shine Complex, this formula enhances vibrancy and health. Infused with Citric Acid, it restores your hair's natural pH (4.5-5.5) and seals the cuticle for a long-lasting finish. The blend of amino acids and conditioning agents deposits glossing molecules, enhancing smoothness and radiance. For optimal results, apply weekly after shampooing, leave on for 5 minutes, then rinse.