Five simple tricks to protect your glasses from scratches and costly damage

Five straightforward habits can help prevent scratches and avoid costly damage.

Glasses have long since stopped being just a vision aid; they are often an expensive everyday essential: anti-reflective coating, blue light filter, varifocals, tinted lenses. Precisely these coatings are sensitive to the wrong kind of care. If you keep rubbing your lenses with kitchen roll or a T-shirt, you risk dull, scratched lenses - and that means poorer vision. The good news is that a few easy routines will keep your glasses clearer for much longer.

Why most cleaning habits damage your glasses

A lot of people automatically grab whatever is nearby: a tissue, a paper towel, a sleeve, a scarf. A quick wipe and it’s done - or so it seems. In reality, that brisk rubbing can act like ultra-fine sandpaper on your lenses.

"Even tiny grains of dust or sand on paper or fabric can grind permanent micro-scratches into the coating."

On top of that, very hot tap water or harsh household cleaners can attack the lens surface treatment. Anti-reflective coatings, hard coatings or blue light filters can lift, break down or become patchy. The same applies to sunglasses without prescription lenses - these, too, are often coated.

Cleaning mistakes to stop immediately

• Cleaning with paper tissues or kitchen roll
• Rubbing your glasses with a jumper, T-shirt, scarf or jacket
• Rinsing under very hot water
• Using window spray, all-purpose cleaner or nail varnish remover
• Dry-wiping dusty lenses without rinsing first

If you drop these common habits, you’re already well on the way to keeping your glasses scratch-free. Next comes what proper cleaning actually looks like.

1. Water and mild washing-up liquid or hand soap: the essentials

Instead of pricey specialist sprays, day-to-day cleaning is usually best done with a simple combination of lukewarm water and a mild cleaner.

Do it like this:

• Wash your hands thoroughly so grease or dirt doesn’t transfer to the lenses.
• Hold the glasses under cool to lukewarm running water - never hot.
• Put one drop of mild, grease-cutting washing-up liquid or a gentle hand soap on your fingers.
• Carefully massage the lenses and frame with your fingertips, including the nose pads and the tips of the arms.
• Rinse well with water until no soap residue is visible.
• Pat dry gently with a clean, soft cloth.

Many opticians explicitly recommend this approach. It cleans thoroughly, costs very little and is generally safe for most coatings. Another benefit: cleaning this way reduces smearing and can also make misting up less likely for a while.

2. A microfibre cloth, not paper: the best on-the-go option

For quick touch-ups during the day, a microfibre cloth is the best choice. Its fine fibres lift grease, dust and fingerprints effectively without attacking the lens surface.

"Microfibre binds dirt instead of simply spreading it around - that protects the coating and keeps your vision clear."

What matters with a microfibre cloth:

• Use only soft, lint-free microfibre cloths.
• Store the cloth in a case or pouch so grit and dust can’t settle into it.
• Don’t carry it crumpled up in a pocket with other textiles.

If you don’t have a microfibre cloth to hand, a clean, smooth cotton cloth can work in a pinch - for example, a fresh fabric handkerchief with no texture. Coarse fabrics containing wool or denim are a no-go, as the fibres are too abrasive.

The frame needs care too

Plenty of people clean only the lenses and ignore everything else. Yet skin oils, make-up, hairspray and sweat collect around the nose pads, hinges and arm tips. It not only looks unpleasant; in extreme cases it can also irritate the skin.

Regularly wipe these areas with your microfibre cloth:

• The bridge and nose pads
• The inside of the arms
• The hinge area, where dust often builds up

A few seconds once a day is usually enough to keep your glasses hygienically clean.

3. Wash the microfibre cloth itself regularly

A dirty cloth simply rubs the built-up grime straight into the lens coating. Many people use the same glasses cloth for months without cleaning it - and then wonder why more and more fine scratches appear.

"If the cloth is grey, greasy or smells odd, the dirt is going straight onto the lenses - and scratches become likely."

How to look after the cloth properly:

• Put it in the washing machine regularly at 30–40 °C.
• Don’t use fabric softener - it coats the fibres like a film.
• Let it air-dry; don’t subject it to high heat in a tumble dryer.
• Replace it completely at least once a year, or sooner with heavy use.

If you clean your glasses several times a day, washing the cloth weekly is ideal. Keeping a second spare cloth is also useful, particularly for travel or leaving at the office.

4. Add shine with vinegar cleaner - carefully

Household vinegar can make glass surfaces shine and cut through grease. Some people also use it on spectacle lenses in a heavily diluted form. The key is the correct mixing ratio and whether your specific coating tolerates it.

Mixture	Note
50% water, 50% clear household vinegar	Decant into a spray bottle and use sparingly
A couple of sprays onto the lenses	Spread with a microfibre cloth and buff dry

Before trying it, it’s worth checking your optician’s paperwork or asking in-store whether vinegar is suitable for your particular lenses. Some high-tech coatings are more sensitive.

What professionals generally advise against:

• Window glass cleaner
• All-purpose kitchen cleaners
• Acetone or nail varnish remover
• Methylated spirits or aggressive solvents

These products can contain ingredients that attack plastics and coatings. Lenses may become dull, develop smears or even discolour.

5. Ultrasonic cleaners: professional-level care at home

Many opticians use ultrasonic machines to clean glasses hygienically and thoroughly. Compact home models are now widely available and have become much more affordable.

"Ultrasonic cleaning reaches where no cloth can - in hinges, between the frame and lens, and around tiny screws."

How it works:

• The unit has a small tank filled with water and a suitable cleaning solution.
• The glasses sit in an insert basket so they don’t rest directly on the metal base.
• When switched on, the device generates high-frequency sound waves that create tiny bubbles.
• These bubbles collapse at the surface, lifting dirt even from fine gaps and crevices.

Many models clean in under a minute. This method is particularly useful for:

• heavily soiled nose pads
• glasses exposed to lots of make-up or hairspray
• frames with many small gaps and intricate designs
• cleaning jewellery at the same time, such as rings or chains

If you use an ultrasonic cleaner, always check the manual to see which cleaning agents are approved, and ask your optician if you’re unsure. Some natural materials - such as certain horn or wooden frames - are not suitable for these methods.

How often should you actually clean your glasses?

Many people wait until their vision is noticeably dulled. A more effective approach is a regular, quick check.

• Daily: Remove dust and fingerprints with a microfibre cloth, especially in the evening.
• Every few days: Wash properly with water and mild washing-up liquid or hand soap.
• After heavy exposure: After sport, gardening or cooking, rinse the glasses straight away.
• Every few weeks: If needed, use ultrasonic cleaning at an optician or at home.

If you’re around a lot of dust, construction environments or flour (bakery work, kitchens), you should rinse your glasses briefly more often so nothing gets embedded.

Risks of scratched and dirty lenses

This isn’t only about appearance. Scratched or constantly smeared lenses can trigger headaches, quicker fatigue when reading, and less confident perception in traffic.

Fine scratches are particularly deceptive: you hardly notice them one by one, but together they scatter more light. In backlight, oncoming headlights or bright sun, that creates reflections that make seeing far more tiring.

There’s another issue: the dirtier the lenses get, the more likely you are to rub them frequently and forcefully - often with whatever happens to be closest. That vicious circle gradually wears the coating away.

Practical everyday tips for wearing glasses

A few small habits will keep your glasses clearer for longer:

• Always store your glasses in a rigid case, not loose in a bag or rucksack.
• Never place them lens-down on a table.
• When cooking or frying, keep a bit of distance from a hot pan so greasy spray doesn’t reach the lenses.
• At the hairdresser or when colouring hair, take your glasses off if possible so no chemicals get onto the lenses.
• For sport, use a glasses strap or sports glasses so nothing slips and gets scratched.

If you keep a clean microfibre cloth in each handbag or in the car, you’ll be far less likely to reach for your sleeve or a napkin. These small precautions cost much less than replacing lenses at the optician.

Glasses are precision products. With the right cleaning routines, they can be used for many years without looking cloudy. Just a few minutes of care each week is enough to maintain clear vision, reduce headaches and enjoy a relaxed view through genuinely clean lenses.