Did you know that back in medieval France, King Henry II’s wife, Princess Catherine, believed that if she ate chicken combs, she would become beautiful? Even before that (in the 700s) Yang Guifei, one of the four beauties of ancient China, also ate chicken combs. Chicken combs, as it turns out, contain a lot of a substance known as hyaluronic acid. Recent clinical studies show that ingesting hyaluronic acid actually can increase the moisture content of the skin. This shows up as m...