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Why do so many hand dryers not dry hands? Am I doing something wrong?
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this post was submitted on 17 Oct 2025
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Why is there bacteria on your hands after you just washed them and rinsed with clean water?
It’s actually the opposite- the issue is they shoot bacteria onto your newly cleaned hands.
https://www.health.harvard.edu/blog/the-bacterial-horror-of-the-hot-air-hand-dryer-2018051113823
Well, if you scrub your hands thoroughly with a lot of soap for at least 30 seconds it could work. Last time I saw anyone doing that was in 2021 during corona hehehe.
Given the issue is fixed by putting HEPA filters on the intake of the dryers, it indicates the bacteria is coming from the air in the bathroom, not wet hands.
Here some sources about different systems and causes. Anyway , I always use paper ;-) https://www.health.harvard.edu/blog/the-bacterial-horror-of-the-hot-air-hand-dryer-2018051113823 And https://www.theguardian.com/society/2019/apr/25/hand-dryers-paper-towels-hygiene-dyson-airblade
That Harvard article is what I linked above. It’s where I found that the HEPA filter on the intake works well to reduce bacterial spread.
You can’t expect me to read all the answers in a tread hehehe.
You gave the article a good and proper skim reading! Anything more in-depth is overkill. You got the gist of it that’s enough lol