Hey everyone. I am 15 years old and I will love to have long hair. My hair is about 1-2 inches past my shoulders. I would love my hair to be at least bra strap lenght or an inch to it by February 19 on my birthday. So, I take a Centrum's vitamin. I would like to know which vitamins are good for the hair to grow long and strong. Thank you for your time and answers.