Shiny hair starts from the inside out, with a healthy diet and the right supplements. Excel Brewers Yeast for Dogs is a concentrated formula for dogs over 50 lbs. It helps promote a healthy coat, reduces shedding, and improves the condition of your pet"s skin. Excel Brewers Yeast is high in natural protein, vitamins, and minerals and fortified with zinc and biotin. Plus, it has omega-3 fatty acids which are known to improve the look and feel of your pet"s coat.