STAR BRITE Instant Hull Cleaner - Clean Stains & Scum Lines on Boat Hulls Easily & Effortlessly - 32 OZ (081732SS)

Very rarely wright a review. After 5 years of ocean boating, my hull really started to display a yellow stain at water line, especially the bottom white half. I tried for hours with cleaners and rubbing compound with frustrating results. Digging through my cleaning supplies, I found this product which I purchased years ago but forgot about it. Figuring I had nothing to loose but try it, I spayed it on the stains and went to find a scrub brush to work it in. To my amazement, when I returned I could see the yellow stain just melting off. With no whiping or scrubbing, just hosed it off and cleaned up like new. I am now kicking myself for not trying a product I purchased years ago.The only recommendation I have is to ware protecting eye glasses and a face mask. This stuff is very potent and irritating to the body. I also assume when using product it will likely remove wax, to a new application of wax in these areas is probably necessary. But, considering this product is such a time saver, diffinately worth it.

Works incredibly well! No more scrubbing. Just spray this and the boat looks new again.

This fiberglas cleaner really works. It may take several applications on stubborn areas, but it will clean the hull. It has a strong odor, so follow the safety instructions. I wore an air mask and rubber gloves. It's well worth the price.

I have some pretty heavy buildup from years and years in a pond. Some came off great, some took more work and multiple applications, some didn't come off no matter how much work. If this were used once every year or two, it'd probably be perfect, will do that on future boats.It's a good product, but don't expect miracles, it can't get 20 yr of accumulation off.

This stuff is Amazing and Hardly any Effort to Apply.You really just wipe it on. Leave it on to do its work for you. Then rinse off. No scrubbing or rubbing. You won’t break a sweat. Yes, it’s pricey but works and is worth it vs hard manual labor as the alternative.Don’t apply while the boat is on your driveway…. Pull it onto the street or you may end up with spots on your driveway.

This products/brand was suggested to us by a friend and fellow boater. We had let the water line scum build up for far too long. Each year we said we would clean it and then get side tracked with other priorities. We had tried other products and felt discouraged. This worked IMMEDIATELY! Only using shop rags paper towels, the scum came off with ease and right away. Would recommend to any one and wouldBuy again. Photos you can see the yellow color on one side and then the other side where we had used the product.

Works great for light water spots and I will continue to use for that. I attempted to use this on the bottom of our boat with dried on river water gunk with no luck what so ever. I was hoping for great success based on the many reviews but was very disappointed and found the products limits imediatly after opening the bottle.Keep in mind.... It's entirely possible it's the water we boat in and/or the fact that we pull our boat out of the water every time we are done with it giving the water time to to dry and build up over a few months of use. If this is how you use your boat I would not recommend this product for heavy build up.

The boat sat in the water for a couple days and the scum line was very bad. We spent some time and a lot of elbow grease, scrubbing it with boat cleaner. It looked a little better, but not much. I bought this cleaner, put some in a spray bottle, sprayed it, waited 10 minutes and just wiped it away with a soft sponge and it all disappeared. Magic!!!