Meguiar's Heavy Oxidation Scrub is an excellent surface preparation solution for removing chalky oxidation, staining, rust, and mold to allow for optimized gel coat restoration. This water-soluble formula rinses easily. Scrub includes biodegradable detergents that will quickly remove heavy oxidation from gel coat, fiberglass, and non-skid surfaces. Long-lasting suds are optimized for effective, continual cleaning. 32 oz.