POWERFUL CLEANING ACTION - STAR BRITE Hull Cleaner removes tough stains from boat hulls, fiberglass, plastic & painted surfaces REMOVES STUBBORN STAINS - Specifically formulated to instantly dissolve tough stains, including rust, dried fish blood, grass and leaf stains MAXIMUM CLING TIME - The new gel formula 'sticks' where applied, ensuring maximum cleaning power and efficiency and is ideal for vertical surfaces SAFER AND EASY TO USE - features a naturally powerful oxalic acid formula, much more user-friendly than harsher hydrochloric or phosphoric acid formulas, a top choice for marine-grade cleaning solutions ULTIMATE BOAT MAINTENANCE - STAR BRITE Hull Cleaner is your all-in-one solution, effectively removing yellowing & scum lines from your boat while maintaining its pristine condition, the best choice for fiberglass and painted boat hulls NEXT STEPS: To add shine and protection to your newly cleaned boat hull, apply STAR BRITE Premium Marine Polish PROUDLY MADE IN THE USA - Since 1973, Star brite products have been crafted with pride in the United States, ensuring quality and reliability