Frequently Asked Questions

What is Cerium Oxide?

Cerium oxide is a rare earth mineral and the industry-standard polishing compound for glass restoration. It chemically reacts with glass at a microscopic level, smoothing imperfections and restoring clarity. This process effectively removes scratches, sanding marks, haziness, water spots, and limescale, making it a top choice for automotive, household, and industrial glass restoration.

What’s the Difference Between High and Fine Grade Cerium Oxide?
  • High-Grade Cerium Oxide (3.5 microns, 85% TREO) is slightly coarser, making it ideal for general glass restoration where a stronger cutting action is needed.
  • Fine-Grade Cerium Oxide (2.5 microns, 95% TREO) is more refined and best suited for optical lenses, high-end glassware, and gemstone polishing.
Can Cerium Oxide Damage My Glass?

No, cerium oxide is safe for all glass types when used correctly. It polishes without scratching, but improper use—such as excessive pressure or using the wrong tools—can lead to unwanted results.

What Types of Glass Can I Use This On?
  • Car windshields & windows
  • Shower doors & glass tabletops
  • Mirrors & household glass
  • Aquariums & boat windows
  • Tempered & laminated glass
Does This Work on Deep Scratches?

High-grade cerium oxide is best for fine to moderate scratches. If a scratch catches your fingernail, it may require abrasive sanding before polishing for the best results.

How Do I Use High-Grade Cerium Oxide?
  1. Mix cerium oxide powder with water to create a smooth paste.
  2. Apply with a felt polishing pad on the surface.
  3. Polish using a rotary tool or drill at 1500–2500 RPM, keeping the glass temperature 30–50°C (86–122°F).
  4. Work in sections, keeping the pad moving over the surface. Repeat the process as needed until the Damage is no longer visible.
  5. Clean the glass thoroughly after polishing to remove any residue.
Can I Use This on Gemstones or Crystals?

Yes! High-Grade Cerium Oxide can be used on harder stones and certain crystals. When applied by hand, it helps clean and restore clarity. When used with a rotary device, it can enhance the polish and remove surface imperfections, making it suitable for quartz, tourmaline, and other durable gemstones and crystals. However, for fine or delicate gemstone work, Fine-Grade Cerium Oxide is recommended for a more refined finish.

Do I Need Special Equipment to Use This?

For best results, use a rotary tool or drill with a felt polishing pad. Hand application can clean glass but will not effectively remove scratches.

 Is This Safe to Use Indoors?

Yes! Our non-toxic, zinc-free formula is safe for indoor use. However, we recommend using gloves and a dust mask when handling fine powders.

How Much Cerium Oxide Do I Need?

The required amount depends on your project size:

  • 50g (1.76 oz) → Polishes up to 4m², enough for at least 2 windshields or large glass panels
  • 100g (3.52 oz) → Ideal for multiple glass surfaces, aquariums, or repeated use
  • 250g (8.8 oz) → Suitable for larger restoration projects or professionals
  • 1kg (2.2 lbs) → Best for bulk use, workshops, or industrial applications

Didn’t find your answer?

Don't hestitate to contact us

Customers said this glass polish "worked exactly as described" and effectively removes light scratches from windshields, windows, and watch crystals. "Worked great" when used with power tools, though requires patience and time. Some noted it's messy to use and settles quickly in water. A few found limited success on deep scratches or tempered glass.

  • The product and the process worked and the scratch is removed!
  • Worked exactly as described with easy instructions to follow
  • This stuff is amazing...within the 3rd time of cleaning it was gone.
Results (positive)Polish (positive)Scratches (positive)Product (positive)Glass (positive)
  • 5 stars: 249 (59%)
  • 4 stars: 112 (26%)
  • 3 stars: 46 (11%)
  • 2 stars: 5 (1%)
  • 1 star: 13 (3%)
A
A.D

Product works well. I have extremely damaged glass from water etch. I used wet and dry sandpaper, begining with 240 and working up to 1200 to remove most damage. Then I used this glass polish product in conjunction with the felt pads on a polishing wheel. It took a bit of work and time but the results have been great. 15years of trying to fix this problem and in 30 mins I've managed to make a vast improvement. Before and after pictures below.Please note, polishing alone was not enough, sanding the glass first was necessary.

A
Amazon Customer
Did a fantastic job of removing wiper marks on windshield.

I used this product for removing wiper marks on a windshield. Using a orbital sander with microfiber pad. Took about 2 hours but saved me from buying a new windshield. Make sure you cover everything up it makes a huge mess.

I
Isaac
Recomendado

Raye mi cámara de acción insta 360, los vídeos se veían mal con el reflejo de luz. Busque por internet como eliminar las rayas y me encontré con este producto, estaba desesperado ya que uso mucho mi cámara, lo compré y lo usé.Tape la cámara con cinta para no hacerle más rayas, dejando al descubierto solo la parte a pulir.Agregué un poco en un envase pequeño le coloqué un poquito de agua haciendo una pasta líquida, no mucha agua no mucho óxido, revolví y moje un isopo y empecé a pulir con un paño de microfibra, mojaba de nuevo colocaba al lente y pulía, el pululado fue hecho a mano, eso si dure aproximadamente una hora y media. Y me impresionó el resultado, quedaron unas rayas mínimas, pero creo que son muy profundas. Estoy muy contento con el resultado. Me ahorro que la cámara viaje a china para garantía…

L
Leonardo Castro
Si es lo que buscas, es la mejor opción

Tenia mis dudas sobre el producto, pero cumplió perfectamente con el propósito, pulir cristales, logre pulir el cristal de mis cámaras fotográficas, en especial de una cámara Insta 360 x3, logre pulir los vidrios de mi carro, mi reloj, entre otras cosas. Recomiendo usar con un poco de agua caliente, un pulidor potente, paciencia y en 15 a 30min tiene los resultados esperados. Gracias

B
Benoit Poitras
Wow !

Fonctionne très bien avec de la patience. Pour un résultat optimal il faut procéder à un sablage du verre, mais je suis satisfait simplement avec le produit

J
Jon

Bought this to remove a couple of fine wiper arc scratches on my windscreen.The scratches couldn't be felt with my fingernai but were very noticeable in bright sunlight.Took about 3 attempts spending 15 mins at a time with a felt buffing pad on my drill.They have now completely disappeared without trace.

R
R. Azensky
Buffed those scratches

Easy and quick. Remember to keep the wheel and surface wet!

W
William boehmer
It works!!!

Have a 63 impala with original windshield, had some nice scratches from the wipers, must mix the powder with warm water to form a paste, apply to scratch and use a buffer wheel on a drill, repeat this 3 or 4 times applying light pressure, it the paste gets hard on glass spray some water, buff and clean off, amazed how it took out this scratch, stuff does not come with instructions but just YouTube it, good luck!!

A
Angelukweb

My husband was in a rush to go out and used a scouring pad to clean the bird poop from the windscreen, the picture shows the scratches we were left with! Using an electric buffer and this powder we were able to completely remove the scratches. Excellent product, but does take a bit of time and patience even with the power tools.

M
Mary Laiuppa
Just what I wanted

I scratched both lenses of my reading glasses and was looking for a way to polish them without replacing the lenses or buying new glasses. Did some research and this was the stuff I needed. Made a paste and used my Dremel with a wet pad and worked it for about ten to fifteen minutes, stopping to add more paste or rewet, checking to see progress. You can compare the remaining scratched lens with the one I worked on. Things to keep in mind; these are reading glasses with no coating and I think they may be polycarbonate and not glass. So your mileage may vary. For me it was worth taking a chance. I avoided having to buy another pair of prescription glasses.If you can, work outdoors as the pink paste splatters all over. It washes off easily with water but still.

J
Juan
Confiabilidad

El producto está bien para el uso que le doy aunque el embase estaba abierto dentro del paquete y se derramó un poco. La entrega a tiempo y por lo demás bien.

Y
Yolanda Martín Hernández
Muy recomendado

Lo compré porque di un golpe al Apple Watch y se ralló la pantalla, la verdad es que no confiaba mucho porque era bastante marcado. Pero con una bayeta de micro fibra suave, paciencia (bastante) y este producto, increíblemente ha quedado como nuevo. Eso si, hay que proteger la corona y los laterales para que no entre el polvillo. Muy recomendado.

R
Rene Bruce
PERFECT SOLUTION!

Our fixer-upper had old windows with aluminum trim pieces. Removing trim leaves glass with glazed damage on the window. Rather than spend $176/window to replace, we went looking for a polishing solution. Ordered/used this Cerium polishing powder with the 75 mm Felt Polishing Buffing Wheel, 3 inch Wool Polishing Wheel for use with Cerium Oxide Polishing Powder. WORKED PERFECTLY! Thanks for providing a product that does exactly what it says. Having the buffing wheel attached to makita made this an effortless task. Happy husband!

C
Cindg
Finition poli brillant

Très très bon produit de finition de polissage, bcp de patience mais le résultat est là +++

A
Amazon Customer

Had a very hard water spot on my windshield. Tried to clean with invisible glass and #0000 steel wool; was never able to remove hard water spots.Mixed 50g of Cerium Oxide with water- 1:1 volume and mixed well.Soak my black (finishing) orbital sponge with the mixture and covered my windshield until the solution is "properly" spread over the windshield.Left it for 10 minutes for chemical reaction to complete and wash off with a pressure washer.Cleaned with a microfiber towel and applied Rain X.Works great.For those who cannot get their windshield polished properly, look up some tutorial videos online.

l
luigi
Servono gli strumenti adatti o il lavoro è oggettivamente troppo lungo su un parabrezza.

Funziona ma a determinate condizioni, serve una lucidatrice meglio se professionale, serve un tampone di spugna, bisogna continuamente bagnare con uno spruzzino, a queste condizioni i tempi sono relativamente accettabili, avevo piccoli segni in controluce sul parabrezza, con segni di spazzola visibili solo in controluce ma riflettevano la luce, avevo due segni che riuscivo a sentire con l'unghia e qualche testa di spillo. Dopo 20 minuti con una lucidatrice professionale i piccoli segni erano spariti totalmente, dopo 1 ora erano quasi spariti i segni più profondi, dopo 3 ore i segni in controluce sono spariti, restano poco visibili i segni che sentivo sotto l'unghia (non si sentono più però) e le teste di spillo, per eliminare quelle rapidamente, è consigliabile farlo a mano con l'ovatta, ho provato per 2 ore e sono difficili da vedere anche in controluce, insistendo vanno via ma ormai non creano più problemi, non sono spariti totalmente (circa 6 cm due segni paralleli delle spazzole, in foto il prima e dopo la levigatura a mano). Un consiglio iniziate con poca acqua magari uno spruzzo sulla spugna e 3 sul vetro, se usate troppa acqua gli spruzzi volano a diversi metri, l'importante è bagnare in continuazione con uno o due spruzzi d'acqua sul vetro. Fare a mano una grossa area lo sconsiglio è troppo lungo e si rischia se si preme troppo di aumentare i piccoli segni, alla fine andrà usata sempre la lucidatrice per eliminare i piccoli segni del lavoro a mano. Ho provato sia la spugna che la spazzola di cotone, devo dire che è meglio la spazzola, la spugna tende ad assorbire il prodotto e si allungano i tempi ulteriormente.

F
Frank O.
Funktioniert (wenn man es richtig macht)

Hat mein Erwartungen weit übertroffen.Ich habe das Glas einer alten Uhr poliert, in der Hoffnung, einige der leichteren Kratzer entfernen zu können.Die Bilder sprechen für sich, aber wer es schwarz auf weiß braucht:Die Uhr hat einiges erlebt, das sieht man ihr deutlich an. Die Kratzer waren mit dem Fingernagel deutlich zu spüren.Nun ist das Glas, bis auf wenige zu tiefe Macken, wieder glatt wie ein... äh, (darf man Kinderpoppo heutzutage noch schreiben?)Der Schriftzug unten auf dem Zifferblatt war nicht mehr zu entziffern, ebenso die Datumsanzeige.Die sind nun beide wieder gut zu erkennen.Auch die zahlreichen Beschädigungen am Rand wurden fühlbar geglättet und abgerundet.Tipp:Ich habe es erst mit einem Feinbohrschleifer und Polierscheiben versucht - dreht zu schnell, wird zu schnell trocken.Darum lieber von Hand mit einem Lappen, dann klappt's auch.

R
Roberto LT
Pulimento para cristales

Cumple bien su función, hay que proteger el resto del vehículo un poco ya que salpica bastante, en mi caso tenía unos arañazos que se hicieron de los limpiaparabrisas al romperse y se podían notar al pasar la uña, yo lo he usado con una esponja de pulir para el taladro y hay que darle bastante tiempo he ir remojando un poco de vez en cuando ya que se seca, el resultado mejor que el que me esperaba.Recomiendo el producto al 100%

C
Cliente Amazon
Muy bien!

Lo compré para quitar dos marcas grandes de un coche que compré para restaurar.La luna delantera tenía dos rascones de haber utilizado durante mucho tiempo unos limpias en mal estado o en seco.Después de dar con una dremel y a mano durante un largo rato el cristal quedó en muy buen estado.Ahora les voy a dar a todos una pasada para que brillen bien.

D
Dominic

I use the cerium oxide powder to polish my fog light, but before i use sand paper to remove the maximum of the scratch. (160 - 320 - 800)

A
Anonymous
5

5 STAR