Can receeded hair line (due to increased male sex hormone) be treated by homeopathy? if yes, which medicines should i apply/ eat? i'm 20.

Could be: Many homeopathic remedies may, if given soon enough, help stop a hairline from receding before its time. Since this is a chronic, complex issue rather than an acute illness, you should not try to guess or treat yourself -- but should have your case taken by a well-trained homeopath & go from there. Your note says you're from india, which has many excellent homeopathic doctors to work with.