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Fogged-up windshields (or even bathroom mirrors or eyeglasses) may be a temporary issue, but it can be a frustrating (and sometimes dangerous) one. And if you've ever wondered why it happens in the first place, here's a simple explanation: when cold air comes into contact with humid air, a layer of condensation on a glass surface can form.

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They leave behind an invisible coating on glass surfaces that's meant to collect moisture and quickly disperses it out.

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Absolutely! Anti-fog spray works on a wide range of glass surfaces. This includes your eyeglasses, safety goggles, swimming goggles, windows, camera lenses, and telescope lenses.

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Here are a couple of additional tips to make the most out of anti-fog spray: 1. Make sure the surface is clean – If the surface is dirty, you will need to use several coatings of the anti-fog solution to give it enough protection. Give it a good head start by giving the surface you intend to treat a good wash beforehand. 2. Shake the container well to make the product more potent – Some of the materials suspended in the solution might have settled at the bottom. Giving it a good shake will help to reconstitute the materials and make the solution potent again.