Prevent your glasses from fogging up with a bit of shaving cream

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Years ago, we shared a tip from one of our readers, CraXyOW3, who came up with an effective method to prevent the glass from fogging up via the application of a little shaving cream. Of course, back then, we were concerned about bathroom mirrors and being blinded when entering a hot building on a freezing day. In 2020, when we all wear face masks whenever we go anywhere, the problem of fogging is a year-round struggle, which makes this simple hack even more essential.

We were reminded of this visionary anti-fog strategy (ahem) when Reddit user celticdude234 offered similar advice, and a quick google revealed that it has spread very far in the age of coronavirus, but since we’re all going to be wearing masks for much longer, it certainly bears repeating. So if you’re tired of your glasses, your bathroom mirror or even your car windshield fogging up, all you need to do is clean the surface in question with a bit of shaving foam.

If you are treating your glasses, simply pump a tiny bit of shaving foam onto your lenses and work into a lather, then wipe clean with a soft cloth (do not use paper towels or toilet paper, which can leave small scratches surface). If you’re worried about smudges, they shouldn’t be a problem, as long as you wipe off all visible residue.

The process works for the same reason as cleaning your glasses with hand soap can be effective— shaving foam contains surfactantswho leave behind an invisible yet protective film coating that will prevent the lenses from fogging up when touched by moisture hot air escaping from the top of your mask. Shaving foam, which is generally denser and less slippery than hand soap, is easier to use and can give you longer-lasting results.

[via #tips]

This article was originally published in March 2011 and updated in August 2020. Changes included extensive rewriting to reframe the article, provide more complete information, and provide links to external sources.


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