Dog Skin Allergies – Anyone Know Of An Effective Homeopathic Or Alternative Treatment For Skin Allergies?

I have a lab mutt who is about a year and a half old. She hates baths, although they do seem to help (my vet said she is alleric to the pollen that gets on her skin). She does not have fleas. Antihistamines haven’t worked. Cortisone shots have proved helpful, but I don’t want to keep giving her steroids. Any suggestions?