[Zekio]

I've always wondered why they aren't equipped with UV light to kill bacteria

[koolba]

Cancer.

Or more likely, lawsuits about cancer.

[manmal]

Why, the light would be inside the dryer of course. Also, UV-A radiation does not damage DNA.

[anfractuosity]

I'm sure I've seen hand dryers with UV lights before

[kurthr]

Yes, those and ionizer/ozonator equipped dryers are moderately common in Asia. I still wouldn't use one, but I guess once I'm in the room it doesn't matter.