Meguiars Mirror Glaze #49 Oxidation Remover eliminates moderate oxidation, scratches, stains and tough water spots on all fibreglass gel coat and painted marine or RV surfaces. Bring the lustre and colour back to your boat or RV! Gel coat oxidizes just like clear coat auto finishes. Exposure to salt water and sun accelerates the oxidation process, resulting in a dull, chalky haze over fiberglass boats and RVs. The chalkiness obscures the true color of your boat or RV. Meguiars #49 Oxidation Remover is a heavy duty cleaner for the stains, oxidation, and scratches that affect fibreglass gelcoats. Oxidation Remover eliminates the chalky, cloudy signs of oxidation and restores the vibrant colour to the gelcoat. Most scratches, stubborn stains, and water spots will disappear, leaving only smooth, shiny fibreglass. Meguiars Mirror Glaze #49 Oxidation Remover is specially formulated for gel coated fiberglass. Gel coat is a very tough, resin finish. Meguiars #49 deep cleans the gel coat better than a car polish to restore the depth of colour. Older RVs and boats will look like new!