Per micky:

No kildding? "Oil" sounds like it needs soap.

Ron? You said "wash". Did that include soap?

The account I read claimed that soap emulsified the "Oil" and spread it
around on the skin as one washed with it while plain cold water
dissolved it and carried it away as the rinse water flowed away.

But I would put a lot more cred in whatever Ron says.... who knows who
wrote the stuff I was reading?
--
Pete Cresswell