I find there’s three types of hand dryers: the standard kind that blows really hot air to evaporate the water, the ones that blow strongly to push the water off the hands, and the ones that are supposed to do one of these but don’t. At my university almost all of the hand dryers fall into the third category.
Why are hand dryers like this, and am I somehow drying my hands wrong?
The theory is that they aerosolize the water and whatever was on your hands, but if you did a decent job cleaning them, it’s not really a problem.
1: most people don’t do a decent job
2: how often do you think those filters get cleaned?
3: splattering tap water all over is also bad hygienic practice
They’re banned in the good hospitals for a reason.
I think it’s because they vacuum air from a public restroom and blow it all over your hands.