I have dandruff. I have been using Head and Shoulders forever, but I still have flakes, so I am thinking that I need to switch to another brand of Dandruff Shampoo. Does anyone have any recommendations? Is Selsen Blue a superior/stronger/more effective dandruff shampoo than Head & Shoulders? I noticed that it is significantly more expensive than H&S, so I was thinking that it might pack more of a punch. If Selsen isn't any good, what should I try? I am really hoping to eradicate these flakes. I would really appreciate some sound advice/guidance. Thanks.