I'm very prone to breakouts (hormonal/dietary, I've found). I've tried OCM in two bouts; first pure hemp seed oil (said to be even closer to natural sebum than jojoba), and second was hemp + castor oil (about 70/30% hemp/castor); both high quality, organic products.
I've never really liked it, though. I can't really put my finger on it. Maybe I just did it too often (daily), maybe something else. I may try it again when my CeraVe cleanser runs out (I have to order from overseas), less frequently.
Reading everyone's great results and experiences tempts me to try it again, but I felt like it was breaking me out or at least not super awesome. I also found it left me dry - but that could be caused by sealing out moisture. I don't really know. I just know that since beginning using CeraVe (with hyaluronic acid etc), my skin stays way better hydrated.
I'm waiting for ingredients for the famous vit C serum (with HA) so maybe it could work. No other way to know than to experiment!