I use coconut and jojoba oil on my skin and try to get organic when possible. I have used olive oil before, too, but I didn't like the scent on my skin. If you're using oil on yourself, you are unlikely to be using tons and tons of it, so I would say paying a little extra for good quality oil is a good idea. I would not use oil used for cooking on myself, though, short of olive oil, since cooking grade oils are likely to be lower quality and more refined.
F 28/5'4/100 lbs
"I'm not a psychopath, I'm a high-functioning sociopath; do your research."