Ultrabond Primer is the most contemporary and safety treatment that provides strong adhesion of the acrylic and gel products to natural nails. Primer has sticky double-sides adhesive tape effect that helps to prevent exfoliates. Non-Acid formula. Should be applied after Nail Prep. Leaves sticky layer after application for double-sides edhesive effect. Ingredients: ETHYL ACETATE, ISOPROPYLIDENEDIPHENYL BIS OXY HYDROXYPROPYL METHACRYLATE, HEMA