I read something the other day about how, in Japan, massage parlours give you a hot towel to clean up your bits afterwards and then send them to the laundry, who then clean them and redistribute them to restaurants. For this reason, nobody uses them on their face, apparently. And when they see Westerners do so, they're horrified.
I'm aware that many aspects of this story sound like bóllocks, but I'm just repeating what I read.