STAR BRITE Instant Hull Cleaner - 32 Oz Gel Spray - Easily Remove Stains, Scum Lines & Grime on Boat Hulls, Fiberglass, Plastic & Painted Surfaces - Easy to Use Formula (096132)

This stuff was amazing. Had grime from saltwater marsh. Removed it instantly. Was almost scary.

I was skeptical at first. It came in today and I went out to my boat and sprayed in from front to back and let it sit for 2 min like it says and then rinse off but by the time I got to the back the front was white white! I was blown away on how easy and fast it works! Only one application and the boat is looking amazing again! $16 well spent and I can’t do the boat twice with one bottle!

I’m pretty anal about keeping my 18’ white and teal fiberglass flats boat clean and maintained. But over time it started developing a below-the-waterline stain that just didn’t come off with normal cleaning. I was dreading a lot of upcoming elbow grease to get it off.I started researching the best solution, came across recommendations for StarBrite Hull Cleaner, and ordered a bottle. As per instructions, all I did was spray, let it sit for a few minutes, then rinse off with a hose. I did use a cleaning mitten to help spread the cleaner evenly, but NO scrubbing was involved. There were a few stubborn areas that I had to treat a second time, but again, no scrubbing. After the second treatment the results were amazing! And so easy! There was no discoloration on the teal portion, and no damage to decals. I did not use gloves, and had no issues with my hands. I would recommend eye protection as it stings your eyes.One bottle was more than enough for my boat. I accidentally sprayed some on the inside bottom of an old stained cooler and it came out shiny white, so it’s got me thinking about other possible uses for this product.I highly recommend StarBrite Hull Cleaner. I haven’t yet cleaned the rear bottom hull (the part that’s so inaccessible while on the trailer), but it’s bugging the crap out of me because the difference is so dramatic!

I had serious dark water stains (lake has high iron content in water) on the hull of my lake power boat. Pressure washer couldn't touch the stains. But this cleaner worked amazingly well. Beyond amazed with the ease of removing the stains!! Worth the buy!!

Look my boat is 26 years old. It removed everything except one hard water line. I used a pressure washer and sprayed multiple times. Product works great except on years and years of build up

This spray quickly and easily removes gunk and stains from your hull. I’ve used various products and this is BY FAR the best.

I purchased a new to me 2001 Bayliner Trophy 2052 in early June 2025. The boat's gelcoat is in moderate condition, meaning: There's still a little bit of shine to it, but it is just beginning to dull all over. The bow (front 1/2 of the hull) from the waterline down had a pretty good "braw" which is the typical orange discoloration that gelcoat acquires from sitting in salt water over the years. This product worked excellent! in removing this discoloration and with minimal effort. It did take 2 application as mine was getting pretty bad, but I was amazed of how well it worked. Front braw eliminated! I would definitely recommend this product to family and friends, and I will buy again.

Hull cleaner didn’t clean oxide off jel-coatI had to use a fiberglass cleaner