STAR BRITE Rust Stain Remover - Easily Clean Corrosion Stains Off Fiberglass, Vinyl, Metal & Painted Surfaces, 128 oz - 1 Gallon

Works way better than expected, I had some nasty rust stains on the interior of my fiberglass boat from previous owner using steel staples on a bow seat. Needless to say the staples rusted quickly and made a very nasty stain running down the white fiberglass. A few sprays of this stuff and the stain just disappeared. Fumes were not bad at all, though I was outside when using it, so any smell was probably carried away. Star bite products never disappoint. Can’t recommend this enough for cleaning rust stains from boat hulls. All in all definitely worth the money. Unfortunately I did not take pictures before using product, but the stain was bad enough that it had a dark black streak in the center and brown streaks all down the side. After applying it was as white as the day it was made. update: when redoing mt fuel lines, the through hull fitting left a nasty rust ring around the area. star brite took care of it.

worked better then expected

Worked great!!! Some rust stains came right off with just spraying it. Some spots needed to be rubbed off. For the tough spots I sprayed some on an SOS pad and that worked great. See pics.

Absolutely BLEW AWAY my expectations and then some. I bought an older fiberglass boat last year that is a 2001, and I don’t think it has ever been painted. The boat itself was in good shape, but it was definitely aged and likely neglected from waxing and such. I honestly thought I’d just need to give it a fresh coat of paint. Figured I’d give this stuff a try, mostly to clean my deck of some rust spots and such. Well… not only is my deck literally spotless, I went ahead and sprayed my hull and WOW. My entire boat, inside and out, has probably not looked this good since the day it was purchased. I sprayed this stuff on, walked away for maybe 2 minutes tops, came back and what I saw absolutely shocked me. I am still in awe at what this stuff did to my boat. I cannot recommend this enough to someone with an aged boat with some water stains on it, minor rust stains (keyword stains, not rust damage) because this will blow your mind!!! I’ll try to take some pictures of a couple small areas to show you the before and after because it’s like a brand new gel coat look compared to somebody having sprayed well water on my boat daily for years. I honestly had no idea my boat was THAT bad. It had easily improved the look of my boat’s finish 99%. It took literal decades of gunk off in 120 seconds or less. Now for just putting a really good wax/ceramic coating on there so I don’t have to worry about that again!! BUY IT!!!

I bought and tried out two similar products for this review. Meguiar's Ultimate Iron Remover: https://www.amazon.com/dp/B0DLCKTQ18 STAR BRITE Rust Stain Remover Spray https://www.amazon.com/dp/B00EXIVX56 The Meguiar's product recommends 30 seconds of soak time, while the Star Brite product recommends 1-2 minutes. For all of these tests, I let both products sit for *over* 2 minutes. Test 1: rust rings on bathroom counter, from a can of shaving cream. Surface is some kind of cheap plastic, not sure what. I unfortunately did not think to grab a "before" picture for this test, but the two stains started out pretty similar to each other. Both products worked to remove the visible ring shaped stains, but the Star Brite product left some spots and speckles behind, whereas the Meguiar's product seemed to leave a lot fewer marks behind. Neither product seemed to discolor the countertop. Test 2: severely rusted shower curtain rod. This test was somewhat inconclusive, although both products worked to shrink the rust blotches to some degree. For this type of severe case a harsher product might be needed. Test 3: two severely rusted shower curtain rings. For each ring, the side shown face-up in these photographs was left face-down in a puddle of the cleaning product and left to soak for at about ten minutes (the longest soak time of any of these tests.) Each ring was agitated at the same time, at about 2 1/2 minutes, and again at about 6 1/2 minutes. I actually think Star Brite came out on top for this one, although as with the curtain rod, neither product did more than remove surface stains. Test 4: this small painted/enameled tray. I did not think to grab a "before" picture for this test, but there was a scratch in the paint and some noticeable staining around the scratch. I was only able to test one product, since I only had the one tray, so I tested Meguair's for this one. It did a good job removing the rust stains, but the scratch itself was still rust-colored after the treatment. It also did a good job of not discoloring the paint, something I was worried about. Meguiar's marketing materials seem targeted at automotive paint specifically, but it also seemed to work well with whatever type of paint was on this tray. Overall, both of these products seem to work well at removing rust stains, and neither product really did much to the actual rust splotches themselves. It's worth noting that neither product is advertised to remove rust splotches. Overall, I would give it to Meguiar's for outperforming Star Brite on the countertop, and for doing a good job on the painted tray, but I would not recommend either product for severely rusted iron and steel.

Product is not hard on paint and works great on gel coat

This product works, sort of. I have a newer boat that has lesser stainless alloys on it, and was used in salt water. There are rust stains everywhere; some tiny little flecks of rust staining, some deep dark stains. This product definitely makes rust stains lighter, but it's not a miracle product. The rust stains are often dissolved and spread out over a wider area on gelcoat. Those lighter stains can often be removed by wet sanding. However, that's a lot of work. I have tried every permutation of letting the product sit, scrubbing, etc. and it always seems to work about the same, which is about 1/2 as well as I would like it to work. This would be a two star review, but the reason for one-star is the sprayer the bottle ships with. It's a type that is not re-usable or removable once you screw it onto the bottle. The sprayer worked fine for about 20 sprays, and then began getting weak. It's now (30 sprays?) so weak the product just dribbles out the nozzle, even though the bottle is full, no matter how the bottle is held. I'm going to have to buy another spray bottle, and drill a hole in this bottle to transfer the liquid and use the rest of this. Incredibly frustrating for a product that doesn't work very well in the first place!

I bought this to remove some rust stains from concrete that has a textured topper and sealer. Since one of the description pictures mentions stucco, I thought it should work for my need. After two applications and scrubbing, the stains have lightened a bit, but are not gone. I suspect it works better on smooth surfaces, but haven't had the opportunity to try it on anything else.

Works great as advertised

Amazing product. Sprayed it on a gelcoat yacht hull that had become rust stained and the stains literally disappeared in seconds without any rubbing or scrubbing although I rinsed it off once it had done its job. Very pleasantly surprized.

buen producto

This works instantly. Love it. Spray bottle doesn't work but the product is excellent. If you dont wax after cleaning the stains come back quickly. Canada weather maybe.

I had fuel spit from vent while transporting the boat and it stayed on the hull as a yellow spot which was difficult to remove even trying to remove with several products . This product was great and did the job.