This is an anti-fog gel for eyeglasses. - Brand: SIMON - Product Name: ANTI FOG - Use: Anti-fog gel for eyeglasses - Contents: 5g Thank you for looking. Opened this month and used only once (on the front and back of both lenses). The amount used was about the size of a small red bean. The container is of the type where you cut the tip of the tube with scissors to open it. Please only purchase if you understand that it has been cut slightly diagonally. Would you like to try it?