generally hair loss happens if you are not getting enough protein. Everyone I know swears by the biotin... but just remember you are not going to absorb the full dose. I am little over 2 months since my surgery and my hair is not falling out. There are so many different factors that go into the hair loss aspect. But hair is not a big deal to me. if i go bald they make really cute wigs. NOT having to shop at lane byrant is so worth having to snake my drains.