Can someone please tell me how much of these 2 vitamins are needed to see some hair growth. I have taken GNC's UltraNourish (quite frankly it did nothing) and Andrew Lessman's hair vitamins, which also did nothing. I am thinking that if I take these 2 vitamins by themselves I will achieve some results, the problem is, I dont know how much to take. Is 5mg of Biotin 2x a day ok???? <font color="purple"> </font>