Wash boat with a Star brite Boat Wash. Shake bottle well and use a clean, dry cloth to apply Fiberglass Color Restorer with PTEF® to surface. Rub in a firm, overlapping pattern while product is wet. Apply to small sections at a time to ensure uniform coverage. Let dry to a haze before buffing with a clean, dry cloth. Because fiberglass surfaces are porous, additional oxidation may leach out after 10-20 days, requiring a repeat application of Fiberglass Color Restorer. To preserve the newly restored finish, apply Star brite® Premium Marine Polish with PTEF® within 7 days.