Scratches on a watch crystal can take away from the beauty of your timepiece. Fortunately, if your watch has an acrylic (plastic/plexi) crystal, you can restore clarity at home using polyWatch Polishing Paste.
This DIY guide shows you exactly how to remove light to moderate scratches safely and effectively, no professional tools required.
What is polyWatch polishing paste?
PolyWatch is a fine abrasive polish designed specifically for acrylic watch crystals. It works by gently removing a microscopic layer of plastic to smooth out scratches and improve transparency.
Important: polyWatch should only be used on acrylic crystals. It is not suitable for sapphire or mineral glass.
What you’ll need
- polyWatch Polishing Paste
- STRPS Spring Bar Tool (optional)
- Soft microfiber or cotton cloth
- Masking tape (optional)
- Clean, dry workspace
- Good lighting

Step-by-step: How to remove scratches using polyWatch
Step 1: Clean the Watch Crystal
Before polishing, wipe the crystal thoroughly to remove dust, dirt, or oils. This prevents new scratches during the process.

Step 2: Protect the watch case (optional)
If your watch has a polished or coated case, use masking tape around the bezel to protect it from accidental contact with the polish.

Step 3: Apply polyWatch paste
Apply a small amount of polyWatch, directly onto the crystal.

Step 4: Polish the crystal
Using a soft cloth, rub the paste into the crystal using firm, circular motions for 2-3 minutes. Apply even pressure and focus on scratched areas.

Step 5: Wipe and inspect
Wipe away any remaining paste with a clean section of the cloth. Inspect the crystal under good lighting. Repeat the process if necessary.

Step 6: Reinstall the strap
Your watch is now ready to wear again. Simply add your favorite strap and enjoy it like new. In this case, we used the Happel Arezzo in Mocha.

Can you use polyWatch more than once?
Yes. Polywatch is safe to use multiple times on acrylic crystals. However, since polishing removes a tiny layer of material, avoid excessive use unless needed.
When polyWatch won’t work
Polywatch may not be effective if:
- The crystal is sapphire or mineral glass
- Scratches are very deep
- The crystal is cracked or chipped
In these cases, professional polishing or crystal replacement is recommended.
Is polyWatch worth it?
For acrylic watch crystals, Polywatch is one of the most effective and affordable DIY solutions. It’s easy to use, requires minimal tools, and delivers visible results in minutes, especially for vintage and everyday watches.
Frequently Asked Questions
Can polyWatch damage my watch?
No, when used correctly on acrylic crystals.
How long does the process take?
Approximately 5–10 minutes per application.
Is polyWatch safe for vintage watches?
Yes. It’s widely used by vintage watch collectors.
Final Tip
If you’re unsure about your watch crystal type, test polyWatch on a small, inconspicuous area or check with the manufacturer before polishing.