>>1348378Yeah the coarse dirt will of course go, but oils and fatty acids don't (or barely) dissolve in water, that's why things like soap and later shampoos (generally less aggressive than the former because it doesn't have its high pH) were invented in the first place.
So yeah while those oils may have some protective features, they also happen to reek after a while - it's a trade-off I guess. That's why I usually shower/bathe only every 2nd day (sometimes 3 in winter), exceptions are after really massive sweating or so - that way skin won't get attacked too much, yet I don't stink (a lot)
Also buzzcutting it cause I've been balding since I was around 18 - no shampoo to blame for that, but (grand)dad's genetics