Freshlips put yeast on lips that has niacin in it. SWK drank beer that has niacin it in.
Niacin (also known as vitamin B3) is found in dairy products, poultry, fish, lean meats, nuts, and eggs. Legumes and enriched breads and cereals also supply some niacin.
If you want to stay away from yeast products, I wonder if it will give your lips an extra boost if you apply dairy or eggs on them.