I have been trying to make my hair grow. Nothing seems to work. I am a 19 year old male with normal to greasy hair. I have been taking Bioten and PreNatals, but nothing is working.

Have any advice?

There isn't anything you can buy or use to make it grow faster. Human hair grows about 1/4-1/2 inch a month.

It doesn't even seem to be growing that fast

Pre-Natals probably won't do a thing. Pregnant women taking pre-natal vitamins notice faster hair growth not due to the vitamins, but more likely due to the hormonal changes they're going through.

Try a B vitmain complex, or MSM, it may work for you.