I know nothing about the show ring, but I think we all want to have our dogs in the best possible condition with as great of skin and coat that they can have. Skin and coat (or skin and hair for humans) health starts with what's being fed on a daily basis. To me, that means good quality meat-based protein with not too low of fat levels. My dogs do best with fat at 15% and above. To that, I supplement daily with human grade salmon oil (with vitamin E) and several times a week with unrefined virgin coconut oil. I'll leave it to other posters to supply suggestions with products specifically marketed for the show ring.