The 411 on MSM: Hair Growth Supplement By Dr. Phoenyx Austin via DrPhoenyx.com It’s always a pleasant surprise when you stumble upon a vitamin or supplement that can cure some of the most common health issues, while also giving you a nice little beauty boost. And such is the case for MSM! I was recently chatting with a newly natural neighbor (try saying that 3 times fast!), when she asked about supplements she could take for hair growth. I suggested MSM. I guess she expected me say something like biotin or a multivitamin, because she instantly looked confused. So I