The cause of Plummer-Vinson syndrome is unknown; however, genetic factors and nutritional deficiencies may play a role. Women are at higher risk than men.
(This will also rejuvenate the coat and help balance your dogâs skin pH levels.) For a shiny, healthy coat mix 1 cup of vinegar with 2-4 cups of water and use as a final rinse. Spray vinegar full-strength on your dogâs coat to normalize the pH balance of its skin. (This is one of my personal favorites!
Washing Your Dog with Apple Cider Vinegar. 1  1. Make a rinse to improve your dog's skin and coat. After bathing your dog, brush the vinegar through the dog's coat. 2  2. Clean out your dog's ears using ACV. The antibacterial properties of apple cider vinegar make it ideal to clean out a dog's ears. 3  3. Spray your dog's coat to repel fleas.