Stock up and save on the Redken Acidic Color Gloss Heat Protection Treatment 230°C with this double pack. 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 [pH 4.5-5.5] 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.