I have always had fine, thin hair, but over the last few months, I noticed it was thinning even more. I did some research, and started taking vitamin D3 a couple months ago. I now have re-growth that is a quarter inch long. !!! Obviously, YMMV, but it helped me. I think vitamin D3 comes from sunlight, which I avoid, so it makes sense I would have a deficiency. HTH!
Loose botticelli curls and waves
No silicones/no sulfates since March 2008