I try to bathe Tobey once a week but i often miss a week. His skin looks dry all the time but doesn't flake. What is the solution for a yorkie with dry skin, but who's hair gets all dirty from playing outside, eating, and everything else? usually his hair starts to look a little greasy, not soft and fluffy anymore, but even when his hair looks a little greasy, when i examine his skin, it still looks dry....