Extra Anti-Fog 5g is a powerful gel-type anti-fog for glasses. Simply apply a rice-grain-sized amount, and it lasts for over 24 hours with a single application, allowing for approximately 30-50 uses. (Number of uses is an estimate.) It is compatible with super water-repellent coated lenses and goggles, and is resistant to fogging even when wearing a mask. It is a compact and economical product. (How to use) ■ Place a rice-grain-sized amount of gel on both sides (front and back) of the lens. ■ Spread thinly over the entire lens with your fingertip. ■ Let it dry for a while, then wipe off with a tissue or soft cloth. ■ When wiping, ensure that no gel remains and wipe clean. *Will ship within 24 hours.