You can try Vitacoat from Drs. Foster and Smith
It works wonderfully.
Also I gave Shaianne Missing Link and Vit E tabs. Now Keegan is getting the left over Missing Link and she is also getting Vit E.
Shaianne's coat was gorgeous. Very very Shiny. And Very soft.
I think that the quality of the dog food that you use is a major factor also.
When I first got Shaianne I fed her stuff from where my dad works. Her coat was dry, itchy and shedding and she had alot of Bowel Movements. Then I switched her to a good quality food from the Pet Store and her coat improved. The food she got this last year was Royal Canin Holistic Blend and I think that had alot to do with her coat quality.
I know that Solid Gold food that Sandra is using is an excellent food. I have read the literature on it and it is very interesting.

You can also try 1T of olive or vegatable oil poured over her food once daily. I would do that until it gets to the shininess you want it and then maybe give it to her everyother day or so. Just be careful how much you give her, you don't want it to act like a laxative!!