You might want to look at some of our products to help the skin. DERMA-IONX which is an oral homeopathic product stimulates the enzyme systems in the body which promotes healing of the skin 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. The essential fatty acids in Omega 3,6,9 are especially important in helping the skin. Probiotics improve digestion which can then help the skin.
I would also suggest that you give your dog only filtered water for drinking and bathing if your water contains chlorine or fluoride. As for diet, if your dog is not allergic to these protein sources you might try a fish or turkey based grain free food since these are considered cooling according to Chinese food therapy. You would want to avoid chicken or lamb which are warming for the skin if it is already too warm. Beef is neutral. Avoid treats that have artificial colorings.
Please feel free to contact us again if you have any other questions or to let us know how you are doing so we can offer more options if necessary.