Rainy conditions, cold mornings, and hot, humid days can all cause your glasses to fog — especially if they fit too closely to your face. While close-fitting frames may enhance aerodynamics, they don’t allow the heat coming off your face to escape efficiently enough to balance the cold and/or damp air rushing at you. Fortunately, there is a proven strategy to prevent fogging. Here are some practical steps you can take ranked in order of effectiveness.
- First and foremost, the best way to stop glasses from fogging up is to wear sunglasses designed to maximize airflow and ventilation through and around the lenses.
- Make sure your sunglasses fit correctly. If they’re too tight, hot air won’t escape as easily and can cause fogging behind the lenses. Most models feature adjustable nose pads and temple tips to adjust your frames for optimal comfort and ventilation.
- Keep your glasses clean as clean lenses are less likely to fog. Run warm water over the lenses, using enough to rinse off any dust or dirt, then use a clean and dry microfiber towel to dry off the moisture. A lens cleaner such as Rudy Project’s Spray Lens Cleaner also works nicely when there’s no clean water available.
- Store your glasses in a case or pouch when you’re not wearing them. This is an easy step to forget when you’re in a hurry, but taking a few extra seconds to store your glasses properly prevents the lenses from picking up dust and dirt.
- Try an anti-fog spray. These sprays contain a hydrophilic ingredient that prevents moisture from bonding to the lens. When applying, remember to wipe the lens completely dry with a microfiber cloth before wearing your glasses.