About Z Clear Anti Fog: Z Clear Anti-fog is guaranteed to work. With that being said please remember one thing. There are hundreds of different types of glass, plastic, polycarbonate and lexan lenses out there. That is not including the different types of coatings: Anti-reflective, transition, polarized. What we have done is found the best possible product to cover such a wide variety of lenses. Z products work on every type of lenses out there, but will work better on some lenses than others. Please make sure you are using the product correctly, and if you are not satisfied please contact us so we might be able to give you some tips on how to get the most out of Z Clear Anti-fog. All our products are manufactured in the United States and sold world wide.
Thank you for your business and remember that our products do NOT work if you do not use them, so make sure you use them.