It seems quite expensive. I use argan type of oils on hair (more like a styling gel than for other purposes). But I'm quite satisfied with the other oils I use on skin (almond, etc), so whatever argan does, it seems overkill. But I don't think there's anything intrinsically differet about hair versus body oils, other than the usual problem that some oils do not get absorbed easily, which could be a good thing, but then will make you stain whatever you wear.
Btw, I use eucerin daily wash too and like it a lot, I swim in the pool often and so far it has not dried or irritated my skin. But that's for showering, and I often lather a body oil after the shower.