Level up your colour-care and activate glass-like shine up to 3-days* whilst keeping hair protected with Acidic Color Gloss Heat Protection Leave-In Treatment. Formulated with Redken’s exclusive Acidic Shine Complex and Invisible Shield Technology, this formula deposits a professional gloss that not only looks but feels healthy and hydrated for up to 72 hours**. The Complex works by restoring the hair back to its healthiest pH and by sealing the cuticle, so your colour remains vibrant and your hair looks and feels healthy after a single application, for up to 13x smoother hair*** With The New! Invisible Shield Technology, you can now achieve glass-like shine without compromising the integrity of your hair. By sealing the hair with an invisible protective layer, this technology defends the cuticle from heat-damage up to 230°C and protects from other dulling agents, extending the look and feel of your professional gloss as well as combatting frizz for a smooth and silky finish after eve