Direct Colors Epoxy Countertop Sealer is a protective clear finish, two-component epoxy resin. Epoxy provides a deep, wet-look finish on countertops and other concrete projects. For best countertop results, top coat the epoxy with the Solvent-based, Polyurethane Sealer. Epoxy will abrade and discolor over time if the polyurethane coat is omitted. Do not apply epoxy to outdoor countertops or indoor countertops in direct sunlight.