What’s the trick to keep glasses from fogging up?

Rub a tiny drop of clear dish soap or shaving cream across each lens, then gently buff clear with a soft microfiber cloth. The thin surfactant residue lowers surface tension, causing moisture to spread into a transparent sheet instead of forming foggy droplets.

Mold the nose wire of your mask firmly over the bridge of your nose and cheeks to create a tight seal that redirects exhaled air downward instead of up toward your lenses. This addresses the most common cause of glasses fogging while masked.

Clean your lenses regularly with a proper lens cleaner and microfiber cloth, ensuring they are completely dry and streak-free. Clean lenses fog less because dirt, oils, and smudges create microscopic rough spots where moisture condenses more readily.