HydroSilex Rewind is a strong cleaner, designed to help you clean the surface before applying a protective layer (ie coating). Most polishes leave behind some ultra-fine layer of oil or the surface may have dust particles, fingerprints, polishing particles and other contaminants on the surface that can prevent your favorite form of protection from bonding to the paint. Removing these oils and contaminants is critical before applying a ceramic coating. Before applying you should wash and dry the vehicle, then spray Rewind onto the surface and use a clean microfiber towel to wipe away. The formula can safely break down oils for removal and eliminate surface contaminants. Once you are finished, you will be left with a truly clean surface, ready for a protective layer to be applied. If you need to prep your paint for a wax, sealant or coating, the HydroSilex Rewind is what you are looking for!