I know it’s not good to keep washing the back of your hand since it might damage your skin faster (correct me if I’m wrong please) so I usually see people washing more only the palm, is it both because bacteria and germs didn’t get to the back or is irrelevant the ones that do or just for not damaging the skin too fast? The palm of the hand doesn’t seem to get damaged or appear damaged so fast like the back of your hand if you wash it off a lot.
Quite a lot of bacteria doesn’t move at all and even less can move on dry surfaces. You move them around by touching your face.
Washing your hands usually only damages your skin when you do it excessively. People working in the health sector often get problems there. If you are worried about skin damage, use hand cream when your skin gets too dry.