I tried this glycerin hack to stop the mirror in my bathroom from fogging up – and it worked like magic

It instantly fixed one of my biggest pet peeves

A his and her bathroom sink with two ovel mirrors above each sink. There is pretty green and white wallpaper on all of the walls and a rattan stand with a trailing plant sitting on top.
(Image credit: The Water Monopoly)

I love a hot shower, but they come with the irritating downside of my mirror fogging up, making applying my skincare afterward a nightmare. It is one of my biggest pet peeves, especially since my extractor fan broke.

When I heard that you could supposedly use glycerin to stop a mirror from fogging up, I had to give it a go. I was skeptical but willing to give it a try while waiting for my fan to be fixed.

So, imagine how amazed I was when this pantry staple instantly stopped condensation on a bathroom mirror for over a week – here’s how this strange hack works.

Using glycerin to stop a mirror from fogging up

There are several things you can clean with glycerin, and I had some leftovers from another hack (using glycerin for stain removal,) so I wasn’t too shocked at the idea of using it elsewhere in my home, but the trick seemed too good to be true.

Nevertheless, it worked to stop my bathroom mirror ideas from becoming useless after a short shower.

For this cleaning tip, you need:

The steps

This is a super simple hack to incorporate into cleaning a bathroom, and it only took me four steps and less than five minutes.

  1. Start by cleaning the mirror using your glass cleaner to remove any smears, streaks, or dust. I use a microfiber cloth for this to avoid any mirror cleaning mistakes and scratches. If you are battling with cloth fibers on your mirrors, consider using a Damp Duster, available from Walmart, to polish the surface and remove debris.
  2. With the mirror clean, I made a DIY cleaning solution by mixing about one teaspoon of liquid glycerin into around half a cup of warm water. I eyeballed this, as there were no set recipes that I could find online, but it works just fine.
  3. With the solution thoroughly mixed, I dampened a clean microfiber cloth with the solution, squeezing it to remove the excess, before buffing it onto the glass. When I was testing this method out, I applied the solution to just one-half of my mirror to see how effectively it worked, but have since buffed my whole mirror with the solution.
  4. Once applied, let the mirror dry. Because the solution is water-based, the mirror may look a little streaky for a while. I let it dry completely before taking a shower and watching for the results.

The results

A round black bathroom mirror, half fogged up half clear.

You can clearly see the side of the mirror I initially cleaned with the glycerin solution is not fogged up, while the other half is cloudy after a hot shower.

(Image credit: Future / Chiana Dickson)

I was genuinely amazed to find that this glycerin solution for fogging mirrors worked. I was fully prepared to write an article on how you shouldn’t waste your time, but I stand very much corrected. Plus, it is made with all-natural ingredients, helping me to maintain my non-toxic home.

Much like cleaning mirrors with shaving foam, the glycerin solution coated the mirror seamlessly and provided a protective film coating that condensation droplets could not form on. It lasted about a week of daily showers before I started to notice it fogging up again, at which point I simply reapplied as part of my achievable cleaning routine.

I will certainly be using this trick regularly to keep my post-shower routine simple and far less frustrating.

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FAQs

Why do mirrors become foggy?

Mirrors become foggy when warm moisture hits a cold surface, such as mirrors and tiles. This moisture instantly cools, forming small water droplets and ‘fogginess’. Coating a mirror in a thin, anti-fog film can prevent water from clinging to the mirror, reducing fogging, as can using heated mirrors.


There are several other things people with clean bathrooms always do that you can learn from for an easier-to-use space, too.

Chiana Dickson
Content Editor

Chiana has been at Homes & Gardens for two years and is our resident 'queen' of non-toxic living. She spends most of her time producing content for the Solved section of the website, helping readers get the most out of their homes through clever decluttering, cleaning, and tidying tips. She was named one of Fixr's top home improvement journalists in 2024.

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