My scalp feels horrible 
Really grainy and gritty.
I don't use any products on the roots of my hair, just the ends, but something is obviously building up.
I have quite dry, frizzy hair so I use kind of creamy shampoos such as Aussie.
I suspect my scalp is just not getting cleaned 
Can anyone recommend a really good one? Is Head and Shoulders what I'm looking for, or something else?
I can't believe I've left it this long. I've recently seen adverts for scalp treatment places and I'm fantasising about getting it done but they all seem to be in London.