system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does running cold water at the end of my shower get rid of the steam faster than venting it?

I don't like having a wet muggy bathroom, but when I take a long hot shower, it's usually humid for a couple hours after. It doesn't matter if I turn the ceiling vent on, or if I direct hot air or cold air into the bathroom. It's still pretty damp.

On the other hand, if I switch the water to almost uncomfortably cold while I'm rinsing the last of the soap off, the steam disappears instantly and the bathroom feels a lot fresher.

Why does cold water work better than other methods that feel more intuitive?
gpt
The water in the air condenses onto the cold water and is carried down the drain. It’s just like the water condensing onto your mirrors, except that water has to evaporate again later, and your mirrors are probably warmer than the coldest setting in your shower.