Sorry to tell you also but like Lynn above who had surgery on the same day as myself, my hair is super duper thin, so thin in fact that I have to stragetically place it to cover the bald spots. I have very long, but very thin hair.
my hair grew back but longer and thin! i stick to weaves, hair pieces and on rare occasions a pony tail! i also take biotin and selenium, make sure you are taking your vits and protein levels are on point...
Biotin with 100g minimum protein daily worked for me. Biotin is water soluable so you can't od on it and the protein benefits you all around.
I megadosed on the biotin 5000's with three tabs daily. It stopped the thining and my hair grew back filled out. I had no breakage so I can't speak for damaged hair but it did the job for fall out from the scalp.