Repairs split end damaged strands for springy, healthy-looking curls Beautiful Hair Begins With Healthy Ends. Transform split ends into healthy-looking hair with new Nexxus® ProMend. The first product line to focus on true split end repair. ProMend binds up to 92% of split ends back together in one use and helps prevent further damage caused by daily styling. Nexxus ProMend Split End Binding Curl Defining Creme Gel. Is a revolutionary curl enhancer that binds split ends back together during the styling process, allowing you to get springy, frizz-free curls every day without worrying about damage. Formulated for a soft,.