10,000 mcg Biotin. My hair is now at hip length with this! (I switched to this 4 months after stopping Viviscal). It took me a total of 19 months to get from a shoulder blade length cut to the top of my hip bones. When it reaches an inch or two past tailbone length, I will start trimming it more regularly to maintain it at tailbone.
Tips for improving hair growth after illness-related hair loss | For vitamins, I take Vitamin E, Evening Primrose Oil, Hair Skin and Nails, Vitamin D, and Super Collagen +C. http://www.shorthaircutsforblackwomen.com/how-to-make-your-hair-grow-faster-longer/