We have had this same problem with Dudley. He loves to roll around, whether its outside in the grass or inside on the rug, so I thought it might be from that. I have used shampoos & conditioners too. He had a schnauzer cut when we first got him, so we didn't really notice it until his hair started growing out. I will look for that Cowboy Magic at the feed store or get some No More Tangles for him next time I go to WM. Thanks for the suggestions. I'm finding lots of useful stuff here.