It was very cold and my glasses in my full-face motorcycle helmet immediately fogged up. Coated lenses do not fog up at all, although drops form after a while. The drops never worsened my vision and I think it only really gets annoying after an hour or so. Even in winter you need a little air circulation in the helmet and that reduces the drops significantly. After the drops have dried, simply wipe the lenses with a lens tissue and the anti-fog protection will remain. I've used 1 wipe in the last month and it's just starting to lose some of its appeal. At first the cloth was damp and there was some "foam" left on my lenses. Without following the instructions, I wipe the lenses with a lens tissue after they dry. I just love it when my lenses are absolutely flawless. After about 3 uses the cloth was dry even though I put it in a mini ziploc bag. I just wet my hands and lightly dampen the cloth and it works like new and I repeat this every time it dries. The description says one swipe is enough for 8 uses and I would say that is correct. One application lasts about 3 days if I don't wipe the lenses too often, and if you don't need anti-fog protection every day of the week, you can easily do a sheet a month. So one pack can help you get through the winter. (At least if it's not as long as this one) The wipes work well with the Crizal anti-reflective coating on my lenses and I haven't noticed any ghosting or smudges at all. I am very happy with these wipes and think they are worth the money.
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