Hello doctor i will like to know what vitaminis good for hair. i been looking at a tablet to take its called propsia? i

Propecia (finasteride): Propecia (finasteride) is not a vitamin. It is a commercially available form of Finasteride which is a drug used to block the effect do dehydrotestosterone in the prostate. During studies it was found that a promoted growth in certain forms of hair loss. Unless you have certain type of baldness it will not help..By the way, hair does not respond to vitamins.

Biotin: Biotin is a b vitamin that may assist with hair and nail growth but i would not get too excited about its potential.