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.
Organix thick & full biotin & collagen. I just bought all 3 of these the other day. You can buy them at Walmart. The shampoo and conditioner has no sulfates and smells amazing! The root boost spray (or the lotion one too) really thickens your hair which makes it tease really well. I'm super happy with this purchase! I'm hooked :)