try using selsun blue. Its only like 8 or 9 bucks a bottle, and it works really well. my brother had dandruff for a long time and he used it regularly when he was younger for about a month or two and he hasnt had a problem since. Oh, and head and shoulders is not expensive at all, its like 4 bucks.
\"do what you want, and say what you feel, because those who mind don\'t matter, and those who matter don\'t mind\" -Dr. Suess