This is an anti-fog solution specifically for swimming goggles. *Cannot be used on regular eyeglasses, eye guards, etc. *Can be used on SWANS and SPALDING swimming goggles. 《Product Description》 Contents: 15ML 《Additional Information》 Q: "How to apply?" A: 1. With the eye cups dry, apply 1-2 drops of Swimmers Demist to the inside of the lenses. 2. Spread evenly without streaks using the sponge on the bottle tip or a soft part of your finger. 3. Rinse lightly in a container of water. *If the inside is dirty, rinse with water and dry before use. Also, wiping with a glasses cloth is strictly prohibited as it will remove the coating. Q: "How many times can it be used?" *Note: According to our research A: Approximately 75 to 150 times. The content is 15ML. Approximately 0.05ML comes out per drop. If you apply 1 drop per eye, it will be 0.1ML for both eyes. ⇒ This means you can use it about 150 times. If you apply 2 drops per eye, it will be 0.2ML for both eyes. ⇒ This means you can use it about 75 times. *This is just a calculated figure. It is a guideline, as the amount per drop may vary depending on the season and temperature.