Wash boat to remove surface dirt and dry thoroughly. Shake bottle well before using. Apply product in a firm, overlapping pattern using a clean cotton cloth or towel. Rub well to remove chalk, oxidation and stains while polish is wet. Apply to small sections at a time to ensure uniform coverage. (NOTE: No hard rubbing is required on most surfaces. Severely oxidized surfaces may require more rubbing and several applications.) Star brite® Premium One Step Heavy Duty Cleaner Wax will quickly dry to a haze. Wipe off resulting haze with a clean, dry towel or cloth. Because fiberglass surfaces are porous, additional oxidation may leach out after 10-20 days, requiring a repeat application of Cleaner Wax. Once gelcoat is restored, follow up with Premium Marine Polish for long lasting protection.