How much Biotin do we take?

I am 6 mo's out and still shedding my hair as if it wasn't already thin before my surgery now it's super thin!  I've been taking Biotin not sure if I'm getting enough of it though so I was wondering what is like the max. dose we should take daily?  I have also been washing my hair in that Nioxin stuff that is also supposed to help?  I hope this thinning hair stops soon or I will have to buy a wig....lol

how much protein are you getting in? Hair and nails are almost all protein and if you arent getting enough in there isnt enough in the body to produce new hair. So make sure you are getting in at least 60 grams of protein thru protein drinks...should be even more but at least 60 grams....