UV Base Top Coat is a dual-purpose product used as both a base coat and a top coat in gel manicures. As a base coat, it creates a smooth surface that improves the adhesion of gel polish to the natural nail, ensuring a longer-lasting manicure. As a top coat, it provides a protective layer that seals the gel polish, enhancing its durability and shine. UV Base Top Coat requires curing under a UV or LED lamp to set properly.