I think the dandruff shampoos work for most, if not, go see a dermatologist.
If the last time you went to a Dr for this was when you were a kid, then go again, chances are medicine has evolved since then
You don't have to live like a cloud full of snow if you don't want to.
A guy I know has this really bad, anything but light colored clothing and it shows. Why he didn't go to a dermatologist is beyond me.