Did you know Canada.. Quebec City's Université Laval have developed what they claim is the world's first permanent anti-fog coating.
Université Laval offers close to 400 academic programs in 17 faculties and 235 research Centres, Chairs and Institutes. It is classified as a Medical-Doctoral university for its medical school and extensive graduate population and is the home of North America’s only francophone faculties of Agriculture and Food Sciences, and of Forestry and Geomatics.
They're saying just one application is said to work indefinitely on eyeglasses, windshields, camera lenses, or any other transparent glass or plastic surface. The permanent anti-fog coating uses polyvinyl alcohol that won't wear off overtime like other anti-fog products on the market.