I am 21 year's old n I am having bald spots on my head since I was 17 years old I been applying minoxidil for 4 years now it only helps with bald spots but my hair's with hair thinning and now my scalp r slowly being visible now and I being consulting derma for 4 years they only have to give me minoxidil with biotin tablets sometimes they give injection on my bald spots and I just read about proprcia online that it stops the dht thing that causes male baldness. I don't know why my doctors nvr prescribed it to me but can I take it? Will it stop my hair thinning also known as Finasteride.