My roommate only washes up if he poops, never after peeing. Now every time I’m in any of the common areas I have to wash my hands after touching anything I haven’t wiped down. Thus, I wash my hands twice every time I use the bathroom; once as normal and again in the kitchen because I touched the taps, light switch and door handle in the bathroom which likely have groin sweat on them… /rant
I was worried about that too but my hands are fine actually. I use lukewarm water and it appears to actually help since I haven’t had any eczema flareups on my hands for a long time.