found this old tread, don't know if topic starter is still looking for a solution, but here's my experience
Also have this problem for almost a year now! I tried switching my hair products and already use no other hair styling products. I thought maybe Head and Shoulders would work, and it did give me some relieve in the beginning. But then it just got back to were it was, and now it's even worse as to it hurts when going to sleep.
Also for others who may try H&S, it's a very agressive shampoo and not recomended for a long term use, it did cause my hair to fall out!
+Tea tree oil didn't work
I'm now trying a shampoo bar from Lush, with almost all natural products. Am going to try the hand sanitizer thing and see if that makes a change !
Did you found something that works for you yet?