My daughter`s had a greasy hair problem for years, and has tried no end of different shampoos with no change to her hair. There is also a problem in getting hold of shampoo for greasy hair, it`s not as much in evidence as it used to be. But a few months ago, whilst browsing in Superdrug, I saw a shampoo, admittedly quite cheap, for greasy hair, bought some, and it`s great! It`s their own brand, Green Apple and Tea Tree, at the moment it`s £2.29 for a 400ml bottle, but 2 for £3. Worth giving it a try. My problem is the opposite, my hair is too dry.