How do I stop my glasses from fogging up when I come inside from the cold?

It is a common frustration when moving from cold air into a warm, humid room. Here are the most effective ways to prevent that condensation:

• Use anti-fog spray or wipes: These products leave a thin, transparent film on your lenses that prevents water droplets from forming. You can find them at most optical shops or pharmacies.
• The soapy water method: Gently clean your lenses with a tiny drop of mild dish soap and water. After rinsing, let them air dry or gently buff them with a clean microfiber cloth. The soap leaves a residue that disrupts the surface tension of the water, preventing fog.
• Check your mask fit: If you are also wearing a face mask, air escaping from the top often hits the lenses. Use a mask with a flexible nose wire to create a tight seal, or pull your glasses slightly further down your nose to allow more airflow.
• Adjust your frames: Sometimes, moving your glasses slightly further away from your face allows for better airflow, which helps dissipate the moisture before it can settle on the lenses.
• Use a microfiber cloth: Carry one with you. If they do fog up, a quick wipe with a clean, dry microfiber cloth is usually the safest and fastest way to clear them without scratching the lenses.

Avoid using harsh household cleaners or paper towels, as these can strip protective coatings off your lenses and cause tiny, permanent scratches over time.