Washing your hands implies rubbing them together under running water. Definitely not just letting water run over them. So you're going to need some friction to

Washing your hands implies rubbing them together under running water. Definitely not just letting water run over them. So you're going to need some friction to get the area clean. You could just wet some TP and wipe with that, to me that's just as hygienic as a bidet with no wiping, but what do I know.