Use Meguiar’s Marine/RV M44 Color Restorer to revive faded, oxidized surfaces to their original vibrant color. This mild marine cleaner safely removes light oxidation, stains and blemishes from all fiberglass and gel coat marine or RV surfaces. Diminishing abrasives and mild cleaning agents work gently and safely to restore surfaces to their original luster. Specifically formulated to remove light marine oxidation and other defects from all gel coat and fiberglass surfaces. Effective by hand or by machine.