Scout has really really REALLY bad dandruff on his tail. There is more near the top of the tail, but none underneath (where the hair doesn't grow). The flakes are large and don't flake easily. I've been brushing it with a hairbrush to loosen up the skin, and then brushing out with a dandy brush. I've also been putting baby oil on it (mostly to stop the hair from breaking when he rubs), but this appears to be making it worse.
Is there ANYTHING I can do to cut down on the dandruff?