FogBock is the best anti-fog spray that keeps your glasses clear! No wiping needed and lasts up to 24 hours per application! Prevent your glasses from fogging up with your mask. Whether you’re an essential worker or someone who goes out in public, FogBlock makes it easy to wear glasses and a mask together. Enjoy a crisp, clear view while you’re wearing a mask in public, get FogBlock today! Safe For All Lenses: Our premium formula is safe to use on all lenses, including eyeglasses, sunglasses, safety goggles, ski goggles, swimming goggles, paintball masks, snorkel masks and many other types of lenses! Works on both Anti-Reflective and Non-Anti-Reflective lenses. No Wiping Needed: The spray bottle makes it easy to apply the Fog Block to your lens with a couple sprays. No wiping or microfiber cloth needed! Long-Lasting Formula: This safe and effective formula lasts up to 24 hours. 30 ml bottle lasts for 120 sprays.