Hi chart6283
i lost some of my hair after surgery from previous health issues, but in the last 15 months i have been buying a vitamin supplement at walmart, "skin, hair& nails' it has made my hair back to it's original thickness, gave me hard fingernails it's worth the money and it works.
They have walmart brand & i think a generic around$ 6.00 i am very happy with the success it's brought me. Cause my hair went from thick to loosing it each time i washed it, this mineral vitamin whatever you want to call it really works, it's a little larger than a tylenol so may have to crush up once have w/l surgery.no more thin hair , thick healthy hair again. And yes it too contains biotin as one of the ingriedents& other ingriedents too.
Hope this helps you too.
Donna