My hair gets so oily that the longest I can go without washing it is a couple of days. Otherwise it is visibly dirty. I don't always have the energy to do that - I'd much rather it produced less oil in the first place! I know there are dry powder shampoos that you can spray in but they make my head itch. My hairdresser has recommended various "treatment" shampoos that claim to rebalance the scalp but all they seem to do is leave my hair greasy (presumably the idea is to discourage your scalp from producing replacement oil). Having used these before, I didn't find that my hair stopped producing oil - after several weeks of use I ended up with hair so greasy that I could scrape the oil off with my fingernails (TMI there, but this is the extent of the problem!). My hair has been like this for as long as I can remember - I don't think it's an ME thing. Any suggestions?