This kit includes: - 1 Gelish Foundation Base Gel (0.5 fluid ounces) - 1 Gelish Top It Off Sealer Gel (0.5 fluid ounces) - 1 Gelish pH Bond Nail Prep (0.5 fluid ounces) - 1 Gelish Nourish Cuticle oil (0.5 fluid ounces) The foundation base creates the adhesive bond between the nail plate and gel product.