Biotin
"I regrew my hair and you can too. I've been bleaching my hair on and off since forever. My hair wouldn't grow any longer it would just snap off. I've dreamed about having thick, long hair. My friend suggested Biotin when we were talking about my hair loss.
I’ve tried like 4 different brands til I found that the best one for me. My hair and nails grow SO much quicker. 
Also my energy levels are high. I continue to take biotin every day and now that I am no longer on my diet I eat whatever I want and I don't gain weight. So I highly recommend it to you. "