How to Care for Your Sunglasses: Keep Them Like New
Sunrise Ibiza
A pair of sunglasses isn't a fragile object. It's a mistreated one. Set down lens-first on the counter, dropped caseless into a beach bag, wiped with the corner of a sandy T-shirt, never rinsed, forgotten on a sun-baked dashboard. After a summer like that, the verdict is always the same: “lenses just scratch by themselves.” They don't.
The good news is that sunglasses care requires no miracle product and no elaborate ritual. Three habits, a few seconds a day, and a pair lasts years instead of a season. Here's the full method — the moves that save your lenses, and the ones that destroy them.
Why sunglasses age faster than you'd expect
A sun lens isn't just a tinted sheet. It's a stack: the lens material itself (usually polycarbonate, light and impact-resistant), a tint, a UV filter, and depending on the model, surface coatings — anti-reflective, hydrophobic, mirrored. These layers are thin. Very thin. That's exactly what makes them vulnerable.
Three enemies show up again and again:
- Dry abrasion. Rubbing a dusty lens means dragging micro-grains of sand and dust across the surface. Every pass leaves a micro-scratch. They add up into that milky haze that scatters light and tires your eyes.
- Heat. A car interior in full sun easily hits 60–70 °C. At those temperatures acetate frames warp, adhesives give way, and surface coatings can craze.
- Everyday chemistry. Dried salt, sunscreen, hairspray, rubbing alcohol, glass cleaner: that cocktail attacks coatings far faster than most people imagine.
Worth knowing: UV protection itself, when it's built into the lens material — as it is with UV400 lenses meeting European standards — doesn't wash off. That myth refuses to die. A deeply scratched or cracked lens, however, scatters light unpredictably and loses its visual comfort, even with the filter still intact.
How to clean sunglasses without scratching them
The method is simple and comes down to five moves. It works for every frame and every lens.
1. Rinse with lukewarm water — always first
This is the step everyone skips, and it's the most important one. Water carries away abrasive particles before the cloth can drag them across the lens. Lukewarm, never hot: very hot water stresses surface coatings and can soften some frames.
2. One drop of mild dish soap
One drop, no more, on your fingertips. Standard dish soap is designed to dissolve grease without being harsh — exactly what you need against sunscreen and fingerprints. Skip the “heavy-duty degreaser” formulas and anything heavily perfumed.
3. Rub gently with your fingertips
Both faces of each lens, the rims, the nose pads, the inside of the temples behind your ears — that's where oils build up and why glasses eventually start sliding down your nose. No fingernails, no sponges.
4. Rinse thoroughly
Soap residue leaves a film that attracts dust. Rinse until the water runs cleanly off the surface.
5. Dry with a clean microfibre cloth
Emphasis on clean. A microfibre cloth that's spent three weeks at the bottom of a bag is loaded with particles: it scratches instead of cleaning. Wash it by hand now and then, without fabric softener (softener saturates the fibres and kills their effectiveness). At a pinch, a soft cotton handkerchief will do — but never paper towel, whose wood fibres are abrasive.
What never to do
- Breathe on them and rub with your T-shirt. The universal gesture, and the worst of the lot: condensation + dry fabric + dust = guaranteed micro-scratches.
- Use alcohol, glass cleaner or white vinegar. These attack anti-reflective coatings and can permanently dull tinted lenses.
- Run them under boiling water or leave them near a heat source to “speed up drying”.
- Set them down lens-first. Always place them temples folded, lenses up — or better still, put them away.
Salt, sand and sunscreen: the summer trio
In Ibiza as anywhere else, the beach is what wears sunglasses out fastest. Sea salt crystallises as it dries into a mildly abrasive deposit; sand works its way into the hinges; sunscreen, greasy and sometimes loaded with mineral filters, leaves a stubborn film on the lenses.
The habit that changes everything: rinse with fresh water that same evening, after a day at the beach, on a boat or by the pool. Thirty seconds under the tap, a quick pass with the microfibre, and you've eliminated 90% of a season's wear. Pool chlorine deserves exactly the same treatment.
One extra tip: apply sunscreen before putting your sunglasses on, and give it a minute to sink in. It stops the immediate transfer onto nose pads and temples.
Storing and carrying: the case isn't an accessory
Most scratched lenses get that way off your face, not on it. A few simple rules:
- Hard case for a bag, soft pouch for a pocket. The hard one protects against crushing, the soft one against rubbing. Both earn their place.
- Never permanently on your head. It looks good for two minutes, but it gradually splays the temples and loosens the frame — after which the glasses slide constantly.
- Never left in a car in the sun, not hanging from the rear-view mirror, not on the dashboard. If you often wear sunglasses at the wheel, keep a case in the glovebox — more on that in our guide to sunglasses for driving.
- Never hooked on a T-shirt collar for a run or a night out. The stress point is the hinge, and the hinge is what snaps.
Frame, hinges, nose pads: the small maintenance that goes a long way
A well-adjusted frame wears out more slowly, because it moves less and rubs less. Check two or three times a season:
The hinge screws. They loosen naturally. A precision screwdriver (eyewear kits cost a few euros) and a quarter turn will do it. A hinge with play eventually widens its own housing — at which point the repair gets serious.
The alignment. Place your sunglasses on a flat table: both temples should touch at the same time. If one lifts, the frame is twisted, and your glasses will always slide to one side. An optician straightens this in thirty seconds, usually for free.
The nose pads, on models that have them. They yellow with skin oils and sunscreen: a soft toothbrush and a little soapy water brings them back.
On acetate frames — tortoiseshell, crystal, tinted — a slightly damp cloth on the outer surface is enough to revive the shine. That's also what explains the longevity of well-built models: our ICON, VINTAGE and SIGNATURE collections are designed to be worn season after season, not replaced every summer.
When should you actually replace your sunglasses?
Three signals don't lie:
- A permanent halo around light sources. A sign that micro-scratches are scattering light. It's tiring for the eyes, especially behind the wheel.
- A twisted frame that adjustment no longer fixes, or a hinge with play despite retightening.
- A cracked lens, however slight. The filter is no longer uniform and the crack can spread.
If it's time for a new pair, the tint matters as much as the shape: our guide to lens categories 0 to 4 and the one on coloured lenses will help you decide. Style-wise, it all starts with the frame: tortoiseshell, crystal or black is where a pair's character is decided. And if you simply want to browse, the full Sunglasses collection is there for exactly that — from the unapologetically black AMNESIA to the CRYSTAL BLUE and its translucent frame, by way of the GOLDEN HOUR and its late-afternoon yellow lenses. Each product page details that model's protection and materials.
Frequently asked questions
Can you clean sunglasses with alcohol?
No. Alcohol, glass cleaner and white vinegar attack surface coatings (anti-reflective, hydrophobic, mirrored) and can permanently dull tinted lenses. Lukewarm water and a drop of mild dish soap clean just as well, with no risk.
Is the dishwasher or an ultrasonic cleaner a good idea?
The dishwasher, never: the temperature and harsh detergents warp the frame and damage the lenses. Ultrasonic baths are reserved for metal frames in good condition, using lukewarm soapy water only. When in doubt, cleaning by hand remains the safest option.
How do you remove a scratch from a sunglass lens?
Unfortunately, there's no reliable fix. Toothpaste, baking soda and polishing paste don't “fill” anything: they abrade the surface further and cloud the lens. Prevention is the real answer — then replace the lens or the pair once the visual discomfort becomes real.
Should you rinse your sunglasses after every swim?
Yes, with fresh water, even if you didn't go in wearing them. Sea spray deposits salt that crystallises as it dries and turns mildly abrasive. An evening rinse is plenty.
How long should a pair of sunglasses last?
With regular care, a well-built pair comfortably lasts five years or more. Without care, lenses often haze over by the second season. The difference comes almost entirely down to rinsing and storage.
Is a microfibre cloth really enough?
For drying or a light fingerprint, yes — provided it's clean. On a dusty or salty lens, no: rinse first, or the microfibre carries the particles across the surface and scratches. Wash it by hand regularly, without fabric softener.
