Okay, so I went through Chemo, major hair loss 12 days into it and then lost my eyelashes after it was all over (including radiation - June 30, 2009). Finally, eyelashes started to grow back in - very excited to see a short row of lashes on top and bottom - and now my lashes are stating to fall out and thin again. Stated Tamoxifen two weeks after radiation. Is Tamoxifen the cause - has anyone else had this happen to them and if so, will they thicken up before my final treatment in five years? I am happy they actually grew back, but would like them to stay (although I believe hair loss is minimal when I think of what I actually went through).