Redken's All Soft Moisture Restore Leave-In Treatment with Hyaluronic Acid adds immediate shine & conditioning for a healthy looking and feeling of hair. It hydrates deeply and retains moisture lost by humidity, heating tools and color services. Immediate moisturization & hydration Heat protection up to 450°F/230°C* Hair feels moisturized up to 72 hours Instantly conditions for 10x smoother hair Visually sleekens split ends, tames frizz, and detangles hair Formulated with the humectant of Hyaluronic Acid, which retains water to provide immediate hydration to hair. With fatty alcohols that deposit onto the hair fiber to leave hair conditioned and moisturized without weighing it down.