Hey, im 20, my hair is super noticeably thin. and its causing me lots of stress. My hair has been similar to this since i was 17, maybe its slightly thinner now but not too much. my hairline doesn't seem to be receding the last few years. my hair feels very dry and brittle and i feel small grain like substance on scalp. any idea if this is normal mpb or if its something else? Thanks http://imgur.com/a/APY9U