Bayhydrol UV (ultraviolet cure) resins offer contractors and formulators an eco-friendly concrete coating with a faster return to service. Formulations for outdoor applications can be cured by natural sunlight, or coatings can be applied and cured onsite with portable UV lamps in less than four hours. Also multiple coats can be applied, dried, and then cured at once, with just one UV coating. Bayer Material Sciences LLC. 800-662-2927.