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)

Great Hull Cleaner — Works Fast and Makes Boat Look New! We recently used this hull cleaner on our boat and were very impressed with how well it worked. This product quickly removed waterline stains, scum lines, rust marks, and general grime without a ton of effort — just spray it on, let it sit briefly, then rinse off. What We Liked: ✔️ Easy to use — no heavy scrubbing or elbow grease needed; it dissolves stains almost instantly. ✔️ Very effective on fiberglass and painted surfaces — even tough stains like brown water line marks and fish blood came off. ✔️ Quick results — made a noticeable difference in appearance in minutes. ✔️ Great prep before polishing or waxing. Notes: 💧 Make sure to follow instructions and rinse thoroughly after applying. 🧤 We used gloves since it’s pretty strong and works best when handled carefully. Overall this has been a great addition to our boat care routine — cleans deeply and saves a ton of time compared to scrubbing by hand. Would definitely recommend it if you want your hull looking sharp again!

This is my go-to when it's time to get my boat all clean and ready for the season. I keep my boat in a slip on the ocean, and it gets a nasty tannin stain above the water line. This product gets rid of the stains, and even removes stubborn rust stains below my pump-out fitting, bilge pump fittings and gas vent. It's a must-have!

I bought a used boat that had been docked for years when not being used. The boat had an ugly brownish green bathtub ring that looked impervious to cleaning attempts. I bought this bottle of Star Brite with low expectations just because the stains were sooo bad. I did just what the directions said. Spray on - wait a few minutes - spray off. OH MY!!! The stains just washed right off. I wish I had taken 'before' pictures so you could see the miracle. I highly recommend.

This product always removes the grime from my boat hull. It is however aggressive and you will want to wear gloves and maybe goggles as well. One negative is it will bleach your concrete driveway, so recommend laying a large tarp under the boat.

Wow, kept my boat in the water all season and this stuff got the nasty brown water stains right off, be careful with galvanized trailers though, this is tough on them, rinse it off the trailer immediately.

Amazing Cleaner!!! We used it on our 50 year old fiberglass boat, and quite literally in seconds, it started removing decades of build up and discoloration. I was quite skeptical after trying other household cleaners, but this worked exceptionally well. 10/10 would recommend this cleaner! (Not the best picture, but you can see the clear difference between the treated and untreated parts of the hull).

Works as advertised. A spritz and a scrub leaves your boat hull looking great.

Cleans well but the nozzle stops working after about 10 min sucks when your old and laying under the boat 2nd time come on up your game