Frog Spit anti-fog is a special concentrated formula provides long lasting anti fog protection equally well in warm and cold climates and is simple and quick to apply with NO RINSING REQUIRED! Frog Spit has been formulated to meet all your anti-fog needs. NO RINSING NECESSARY! Just one drop spread evenly around the lense is all you need. Originally developed to stop dive masks from fogging, Frog Spit works equally well on swim or ski goggles, motorcycle helmet face guards, hockey face shields, or any surface that needs long lasting anti-fog protection.