If you want an effective delivery method, I suggest you go topical. The best product for this, is sustain alpha. I've tried it for periods of about 3 months or so, mainly to help repair my libido after I felt it was damaged by propecia. For that purpose, it definitely worked, and it made me feel better too. Can't say anything about it doing anything for hair, maybe slightly thicker? I guess to truly find out if it does anything for hair you would have to apply it every day for a year, and combine it with an oral source of turmeric (may I suggest emerald balance?). You can have fun paying for all of that, primordial also sells toco-8 which they claim works against hair loss, I haven't heard anyone actually having success with that though sadly. If you have a fat wallet and you wanna take all thee expensive supplements to see if they do anything go ahead. I guarantee you the resveratrol in sustain alpha is absorbed very nicely, and you can definitely feel it.
http://www.primordialperformance.com/store/Sustain_Alpha-libido-booster.html
Someone on the forum stated a while back their friend grew back ALL of their hair with intense aerobic exercise training for a marathon combined with emerald balance. Emerald balance contains quite a few ingredients and it is definitely good for your health, maybe even the quality of your hair. It contains turmeric, check it out:
http://www.sgnnutrition.com/
Not smoking cigarettes, intense aerobic exercise, and eating 6 smaller meals to keep insulin levels in check might help your hair, and will help your well-being. The downside is it takes a whole lot of discipline, and its something a lot of people would easily give up on. I can say it's not something I've been able to do for myself haha.