You might want to look at some of our products to help with the allergies. Derma-IonX which is an oral homeopathic product stimulates the enzyme systems in the body which reduces inflammation, promotes healing, and helps with assimilation of nutritional components in diet and supplements. The supplements I use along with it include probiotics and Omega 3,6,9. Together with Derma-IonX it produces a synergistic effect for a faster response. I would also suggest that you give your cat only filtered water for drinking and bathing if your water contains chlorine or fluoride. For the dietary modifications you might want to try a grain free diet for a while. You might also need to rotate the food so that you don't feed the same protein source for too long.