GLASS POLISH PRO 3.52oz (100g) Cerium Oxide, Fine-Grade Glass Polishing Powder, Refined Formula, TREO 95%, 2.5 Microns, White – GP90002

This product works for medium to small scrapes. I bought it to polish a fossil digital watch, and it worked amazingly. If you need something that works for deeper scratches make sure to buy a higher-grade polish. If the scratch is too deep don't expect magic.

This works very well for my Pebble Time, but one warning, it does appear to take off some sort of coating (oleophobic?) on the glass of the watch. So be careful if this is something that you want to retain. Mine had some fairly decent scratches on it that made it hard to see through to see the time, so for me it was worth losing this coating.Because of this coating, this took quite a bit more time to polish as a small circle appeared when I was polishing the scratches off of the watch. This circle looked really clear and smooth, but there was a border where this coating was coming off, so it looked strange. Since there was this border, I ended up having to polish the entire surface in order to make the watch look normal. I've included screenshots of how the watch looked initially, then how it looked after a bit of polishing, and then how it looked in the end.It took a lot of time to polish out the scratches, but it did the job. All in all, it took like 1 and a half to two hours to polish by hand only. Probably would have been a lot quicker if I used a dremel. I hardly ended up using much of the powder, but at least I know I have a lot to spare if I need to polish any more glass. In the end, that watch looks much better; almost like new.Update: After using it for a while, it definitely seems a lot shinier than it used to be as there is a glare that is a lot more prominent on the screen making the watch a bit harder to see, but in my case, it was definitely an improvement over how it used to look.

Be sure to cover areas not being polished. Makes a mess when used with a rotary polisher. Not as agressive as I had wished. Good for polishing, but scratch removal on auto glass, not so much.

Was ok. Didn't buff quite as well as I had hoped for.

I cleaned my frost covered windshield with the wrong "scraper" leaving 6-8 rather long scratches and a few short ones. I didn't want to replace the windshield and found cerium oxide mentioned on the internet. My fingernail would hesitate when I slide it across the scratch but did keep going. I thought that the scratches may be too deep for this product. I only ordered this small amount since I didn't believe that it would work in my case.I was wrong, it worked well.I used a small dremel type tool and a felt pad that was only about an inch across. I marked the scratches on the inside of my windshield with a black magic marker, giving me a target area to work on.I mixed up the powder with enough water to make a paste, dipped my felt pad into it, and starting working on the scratches. I followed the scratch lengthways and worked back and forth not knowing which would be best. I kept the pad flat against the glass and only used a moderate pressure. If I pressed too hard my tools would slow down and I would know to ease up a bit.The small scratches came out rather quickly. The deeper wider ones took a bit longer. I would clean off the residue and wipe the inside of my windshield with alcohol to remove the black marker. If I could still see the scratch I repeated the application process.It took 3-4 trys to get all of the scratches out.The black marker helped but a white one might have been better. The black was a bit hard to see.Try this on your scratches. It won't hurt to try. It wasn't that hard. Just allow a bit of time to do a careful job.You might want to wear eye protection and an old shirt. The rotary tool flung the paste around a bit.Good luck.

I have light scratches on my office window, used a cordless drill polishing pads and this paste 1 hour later looked absolutely no different at all in fact it left cream in the scratch to emphasis it. The paste seems to be too creamy to really work. I would say this is probably only good for glass that is not scratched to get any hardwater off.

I successfully used this cerium oxide to remove scratches from the inside of a 125 gallon (AGA) glass marine aquarium. There were several circular scratches covering a space the size of a nickel. They were deep enough that I could feel them with my fingernail. I mixed the cerium oxide into a slurry and applied it using a power drill. I wasn't able to find a small enough "T" buffing pad so I made my own. I used a socket bit covered with a felt disc and wrapped twice with a micro fiber cloth cut to size. The whole contraption was held together with one of my daughter's hair ties. A little crude, but after two plus hours of grind, check, clean, grind, check, clean, the scratches are mostly gone. Now that I have a technique down, I'm confident I can get the remaining scratches out. For the record, my tank has a variety of fish and SPS, LPS, soft corals, anemones, inverts, etc. I drained out water to below the scratch and created a damn with saran wrap to catch the cerium oxide. Enough cerium oxide still got through that it clouded the water. None of the fish or inverts showed any signs of distress at the time. It has been a few days and everyone still looks fine. I used approximately 1/3 of the bag.

It works great, but using it with a drill attachment will fling this stuff all over the place.The solution is to make a shroud that encloses the drill attachment. Take an empty plastic peanut butter jar (or something similar that is wider than your buffing pad), and drill a hole in the bottom that is a little wider than the shank of the drill attachment. Stick the shank through the hole so that the buffing pad is inside the jar, then carefully cut the jar so that it touches the glass and encloses the pad when you apply normal pressure.Also, use lots of water and go slow. Pay attention to the temperature because this generates a lot of friction heat and can easily crack the glass if you go too fast.