I fast about 10-20 days per quarter, then a maintenacne fast of 1 day a week. I myself have weight issues, so this not only helps there, but also maintains as well.
Now as for castor oil & wrinkles, I use a combo of: 1/3 castor oil, 1/3 extra virgin olive oil, and 1/3 virgin coconut oil. All organic, of course. Works like a charm.