Curl Defining Leave-In Treatment with citric acid and Redken’s Bonding Care Complex to protect and restore the pattern of damaged curls. With heat protection up to 450 degrees Fahrenheit. 72-hour defining, hydrating, & frizz fighting. 92% saw healthier curls in 1 use. Protects hair against heat up to 450 degrees Fahrenheit. 12x easier to detangle. 12x smoother and more conditioned. 92% saw healthier & more defined curls in 1 use. Silicone-free, vegan formula. Formulated without sulfates, silicones and parabens. Hydrate and improve curl elasticity. 85% less frizz for up to 96 hours. Up to 96 hours of shiny and defined curls. Great for curl types 3A-4C. Curl Bond Technology with Citric Acid and Glycine.