Optimum Opti-Coat Pro (Opti-Guard) Clearcoat forms a permanent coating that protects paint and other automotive surfaces indefinitely, if applied correctly to a properly prepared surface. Optimum Opti-Coat Pro acts as a second layer of clear coat providing increased protection from the attacks of environmental elements. Optimum Opti-Coat Pro can be applied to paint, glass, chrome, wheels and hard trim. Opti-Coat Pro should only be applied to painted surfaces that are clean and free of defect.