You have to laugh. Right from the start of the pandemic – with the requirement to wear a mask (unless you are a twat or genuinely exempt) – glasses steaming up has been a problem. If you go by social media, anything from washing up liquid, through squirrel pee, shaving foam, all the way up to 20ml bottles of over-priced chemicals is the way forward.
The bottom line is that your glasses – in my case, sunglasses – steam up because the mask directs warm and moist air up into the lenses.
Sometimes, the solution doesn’t lie with trying to stop basic physics (moisture condensing on glass). It lies with basic physics not being involved in the first place (keep the moisture away from the glass). And these things are the answer.
I bought some and they work perfectly. You just put one over your nose, put the mask on top, and the moist air goes out the side and not the top. The fact that they’re re-usable and cost as little as £5 for a pack of ten of them makes them a much better solution than bottles of Magic Liquid that you’re going to keep wiping off and use up in a week.