This Meguiar's Mirror Glaze Heavy Duty Oxidation Remover is specially formulated to remove moderate oxidation, scratches, stains and tough water spots on all fiberglass gel coat and painted marine or RV surfaces. This professional-quality formula restores natural colors by effectively removing surface degradation. 16 ounces. Specially formulated to remove heavy oxidation Removes water spots Removes scratches from gelcoat finishes