> “Because, evolutionarily, why would we be so disgusting that we need constant cleaning? And constant moisturizing and/or de-oiling?”

I am highly sceptical of every argument starting with "evolutionarily". Many times it just doesn't make any sense. "Evolutionarily, why would we travel in cars? I have this friend who stopped travelling in cars and hasn't been sick ever since".

Not that the soap question is not interesting, but anecdotal evidences ("I know a guy who...") never convince me.