I sometimes use 100%camellia oil, but find it quite thick. Japanese people use it on their skin - it doesn't have to be wiped off. It is skin friendly. I think it is quoted as the closest to natural skin oil - might be wrong though! I find that Ballistol is better - much thinner, better creep, can be drunk, does not have to be wiped off. Old barber manuals recommend castor oil - I haven't tried it, though.
Regards,
Neil.