Can You Clean Glasses in an Ultrasonic Cleaner?

Short answer: some glasses can be cleaned in an ultrasonic cleaner, but only when the lens and frame manufacturer—or your optician—confirms that the materials, coatings and condition are suitable for immersion and vibration.

Do not use the fact that an item is called “glasses” as the compatibility test. Two pairs can have different lens coatings, frame finishes, adhesives and levels of wear.

What the cleaner may help with

Glasses collect fingerprints, skin oil and residue around hinges, nose pads, screws and the edges of lenses. Moving water can reach some of these narrow areas more easily than a cloth. It does not, however, repair scratches, restore damaged coatings or sterilise eyewear.

Check the lenses and coatings first

Modern lenses may have anti-reflective, scratch-resistant, blue-light, tint, mirror or other treatments. Ask your optician or check the manufacturer’s care instructions before using a machine. Avoid ultrasonic cleaning when coatings are peeling, crazed, scratched or otherwise damaged unless a professional specifically approves it.

Contact lenses should never be treated as ordinary eyeglasses. Follow the instructions from your eye-care professional and the lens manufacturer.

Check the frame

Inspect screws, hinges, decorative pieces and paint. Do not immerse frames that are cracked, loose, glued or made with a material whose water compatibility is unknown. Electronics, including smart glasses, require their own manufacturer-approved care routine and should not be placed in a household ultrasonic cleaner without explicit permission.

Before placing glasses in the cleaner

1. Read the eyewear care instructions.
2. Ask your optician if you are unsure about coatings or frame material.
3. Inspect the lenses, finish, hinges and screws for existing damage.
4. Confirm that the complete frame and lenses may be immersed.
5. Follow the cleaner’s fill level and operating instructions.

Using a compatible cleaner

Start with clean water unless the eyewear and cleaner instructions recommend a specific solution. Position the glasses carefully without forcing them against the tank. Use only the operating cycle specified for the machine, then remove and dry the glasses with a clean, soft, lint-free cloth.

The NudgePickr ultrasonic jewellery and glasses cleaner is a compact, one-button option for compatible, water-safe items. Its suitability still depends on the care instructions for your exact pair of glasses.

When a manual method is better

For routine lens cleaning, follow your optician’s recommended method. This often involves rinsing away loose particles, using an approved lens-cleaning product and drying with a clean microfibre cloth. Avoid paper towels, rough fabric and household glass cleaner unless the eyewear manufacturer says they are safe.

Frequently asked questions

Will ultrasonic cleaning remove lens scratches?

No. Cleaning removes compatible surface residue; it cannot repair physical scratches.

Can I clean smart glasses?

Not unless the smart-glasses manufacturer explicitly approves immersion and ultrasonic cleaning.

Can I use dishwashing liquid?

Use only a solution approved by both the eyewear manufacturer and cleaner instructions. When uncertain, start with clean water or use your optician’s recommended manual method.

For a broader exclusion list, read what not to put in an ultrasonic cleaner.