This Dynamic Duo package includes bottles of Gelish Top It Off and Gelish Foundation Gel. The Foundation is a soak off base gel that creates an adhesive bond between the nail plate and gel products that will not damage the nail plate. It serves as a base for Gelish Soak-Off Gel Polish or Gelish Structure Gel. The Top It Off Sealer Gel is a soak off product that seals your Gelish Soak-Off Gel Polish with a high shine finish. It won't chip, peel, or become dull. Gelish products apply like nail polish and cure in 30 seconds with an LED light or two minutes with a UV Light. The polish stays on nails for up to 21 days, and it soaks off in just 10 - 15 minutes with Gelish Soak-Off Remover.