Try Dream Coat by Halo. They advertise 'grooming your dog from the inside out.' I saw a BT at the feed store yesterday with a young lady and that dog's coat looked like it was about to drip, it was so shiny. I asked her why that coat was so vibrant and she promptly said it was not so much what she fed her but Dream Coat gets the credit. She also stated that prior ro using the product her Boston had extrememly dry skin. I was through shopping but went back in and purchased a small (8oz) bottle. Wish you could have seen her. If you don't have a local supplier they have a web site.

http://www.halopets.com