I'm 25 yes old, my scalp gets very much oily even if I don't apply oil to my hair. Due to the oily scalp I get an itchy feeling and when combed hair (not interested in scratching an oily scalp), I find some kind of oily dirt (assuming it to be dandruff) and also too much of hair on comb which explains that I'm loosing my hair. Is there a solution for this if yes, without using a costly medicine is it curable and how long would it take for the fallen hair to be regrown? And how long will I have to continue the medication?