Duragloss755 Automotive Glass Water Spot Remover - 8 oz.

It works, takes a bit of elbow grease but, it took out the water spots that have been on my glass for the past 4 years, didn't think it was going to do it but, it surprised me, thought I would have to do a few applications but, once I started and added some pressure, I could actually see the spots disappearing as I was polishing. My glass is now bright and shining. Tip: If doing this by hand, work in sections, I basically did my glass in 3 sections and it came out great.

It’s very easy to use, and it also worked on chrome details too.I spread evenly and wiped with dry paper towel, and repeated again and again if the water spots didn’t come out.I didn’t have to wipe vigorously at all, all the water spots were gone.

This works good on glass. I bought for my truck because I had some water spots I couldn’t get off. I applied this by hand without a machine, so depending on how dirty the glass is might take a couple applications. But it does work. It’s hard to get a before picture because my tint is so dark but I posted an after pic

Consider me impressed. I have a one year old SUV. I'm a little OCD about keeping it washed, but during the winter months my options are limited. I stick to a good touch-free carwash but since it's freezing out I don't get to wipe it down afterwards the way like to during the nicer months of the year. After this past winter I noticed that my rear window (exterior) had a film build-up of some sort. Not really visible when things were dry, but if I was washing the window with a spray cleaner, its appearance was obvious. I thought it was just hard water stains, so I tried a vinegar solution, ammonia cleaner, and few other things, but nothing helped. The glass felt smooth when I ran my fingers over it, yet I could definitely tell there was something there. I only had issues on the rear glass and nowhere else. Still not sure what it was, but I tried this product and I'll be darned. It did what the other products could not. It left an amazing shine as bonus. For anyone that remembers the old product called "Glass Wax" that came in a pink can, this works just like it. But without the noxious fumes. Apply a thin and wet coat, let it dry to the touch, and use a soft cloth to buff it clean. A power buffer is not necessary. There is a fine grit in this, so avoid getting it on the surrounding surfaces. In fact, if you are really picky, I would tape off around the windows to make sure there's no contact. Plus if you have molded plastics or rubber gaskets, this stuff has the potential to stain it just like a car wax paste would. The buffing produces a lot of dusty powder so be prepared to clean up afterwards. All in all, I'm really glad I tried this. Even if you don't have big issues to deal with, the beautiful shine would be worth it alone.

I rarely write reviews, but my wife said I had to post about this after using it on her new car. We purchased a used 2011 Hyundai Santa Fe. There were some water spots on all 4 side windows and the rear window, but I assumed they would come off when I washed it. I gave the car a full wash when we got it home, but the water spots were extremely stubborn. I called the dealership and asked if they had any secrets for stubborn waterspots. He wasn't much help.I tried: 1) Windex 2) Rain-X Glass Cleaner 3) Mixture of Vinegar and Water and Newspaper 4) 100% Vinegar 5) CLR 6) Lime-away 7) Scrubbing Bubbles 8) Denatured Alcohol 9) Steel Wool with VinegarFortunately, none of these damaged my windows. However, they didn't diminish the water spots at all, either. So, I went where I usually go when I need the answer to something. Hopped on Amazon, typed in "Waterspot Glass Cleaner" and read the reviews on a few products. Nu-Glass seemed to be the answer.I will say that I did use a circular electric buffer, which definitely helped. I did one round on all the windows, left it to "haze over" like the directions say and let it sit for about 5 minutes. Then I came back with a clean, dry towel and wiped off the haze. The water spots were definitely lighter. It took 3 applications on the back window, but now there are no longer any water spots on the rear window. I was only able to get 2 applications on the side windows before it got dark, but they are almost perfect. One more application should be good. I've used about 1/4 of the bottle thus far.

GS6 / Glass Polish by Permatex which I have used for 20 years seems to be discontinued! I tried the Rain-X type X-Treme cleaner which has glass abrasives but it did not work at removing the hard water spots on my vehicles. I looked everywhere for my trusty old GS6 and NO ONE even knew what glass polish was! One older guy from a NAPA knew about it and said they have not had it for years and can no longer order it. I called Permatex and am told they no longer manufacture it...WHAT !!! WHY!!! ...ok....So I buy this as a last ditch effort and am so happy! the Nu-Glass is exactly like the old Glass Polish / GS6 by Permatex. It acts the same way, applies the same way, feels the same, and works just as good! THANK YOU for having this!Should not be used unless you understand what glass polish is because it can easily scratch your paint during application if you don't take time and are cautious. Just do some research and buy this if you have hard water spots. This will make your window so clean and clear you will think you don't have any glass when driving. TIP: Apply 2 times by hand with a "terry" towel folded (not mirco) and use elbow grease to scrub the glass. Apply a third time using a DA with a polishing or finishing pad. be sure to tape your corners to protect trim and paint. Other note: You do not want ANY water or wetness! This is not like paint polish, any moisture on the glass or application cloth will produce poor results....also be sure you apply in shade on cool glass.