Improper cleaning is the most common cause of damage to sunglasses, leading to scratches and the degradation of specialized lens coatings. Modern lenses often feature multiple layers, such as anti-reflective, polarized, or mirrored films, which are highly susceptible to abrasive materials and harsh chemicals. Learning the correct, gentle method for cleaning your eyewear is the best way to ensure both the clarity of your vision and the longevity of your investment.
The Gentle Home Cleaning Method
The safest cleaning method begins with a simple rinse under running, lukewarm water. This initial step washes away abrasive dust, sand, and grit particles that could otherwise scratch the lens surface when wiped. Avoid using hot water, as excessive heat can weaken frame materials and potentially damage the delicate lens coatings over time.
After the initial rinse, apply a single drop of mild, lotion-free dish soap to each lens. The soap acts as a gentle degreaser, breaking down the body oils, makeup, and sunscreen residue that accumulate from daily wear. Use clean fingertips to gently rub the soap across the entire lens surface, the frames, the nose pads, and the hinges, where grime often builds up.
Thoroughly rinse the sunglasses again under lukewarm water to remove all traces of the soap solution. Any residue left behind will dry and leave streaks, defeating the purpose of the cleaning. Finally, gently pat the lenses and frames dry using a clean, lint-free microfiber cloth, which is specifically designed to absorb moisture and oils without scratching the surface.
What Never to Use on Your Lenses
Many common household items and cleaners contain ingredients that are highly damaging to the specialized coatings on sunglass lenses. Household glass cleaners, for example, often contain ammonia, which can chemically strip away anti-reflective or mirrored layers. Similarly, products containing acetone, alcohol, or vinegar should be avoided, as these harsh solvents can degrade the protective films and even warp certain plastic frame materials.
The materials used for wiping are just as important as the cleaning solution, and abrasive items are a major source of microscopic scratches. Never use paper towels, napkins, or facial tissues, as these products are made from wood pulp fibers that are rough enough to create fine scratches on the lens surface. Wiping lenses with clothing, even soft cotton, is also risky because fabric fibers can trap dirt and dust particles, turning a simple wipe into an abrasive action.
Quick Cleaning When Away From Home
When a full sink-based wash is not possible, the dedicated microfiber cloth that came with your sunglasses is the best tool for light cleaning. This cloth is engineered to pick up dust and light smudges without scratching, but it should only be used on lenses free of heavy dirt or grit. If the lenses have visible debris, a quick rinse with water is necessary before wiping to prevent scratching.
For a more effective portable clean, pre-moistened lens wipes designed specifically for eyewear are a safe alternative. These wipes contain a gentle, alcohol-free cleaning solution that is safe for most lens coatings. Keep a supply of these individually wrapped wipes in your car or bag for convenient, streak-free touch-ups throughout the day.
Beyond Cleaning: Daily Care and Storage
Preventative habits significantly extend the life of your sunglasses beyond the cleaning process. Always store your eyewear in a hard-shell case when you are not wearing them, as this protects the lenses from accidental impacts and prevents dust accumulation. This is the best defense against the pressure and abrasion that can occur when sunglasses are tossed into a bag or pocket.
Extreme heat is a major threat to both the frames and the lens coatings. Avoid leaving your sunglasses in hot environments, such as on a car dashboard, where temperatures can cause plastic frames to warp and lens coatings to delaminate or bubble. A quick daily wipe with a microfiber cloth and a more thorough weekly wash will keep your sunglasses in optimal condition.