It occurred to me (after awhile - sorry) that you might want to try the food we got when Shelley had the itchies. Breeder's Choice AvoDerm It has avocado meal and fish meal in it as well as brewers yeast and vitamins, you can also buy a supplement from the same folks with more vitamins and probiotics in it.
Shelley had a lot of dander, the itchies, and yukky ears -- this food cleared it right up. We asked the vet recently about switching, and her attitude was, "If it ain't broke don't fix it" so we just put Ruby on the same stuff and she loves it (and her coat is simply gorgeous).
Well, I’m just tired of switching dry foods and wanted to try something else. But then cooking food seems complicated, a lot more complicated than scooping kibble out of a bag. I haven’t tried that brand... it’s not one our feed store carries or we’d have given it a shot. Petsmart or something like that?