Yes. Lipstick does contain fish scales. They are sometimes added to cosmetics, including lipstick and nail polish, to give them the same shimmering effect that the fish scales give the fish. Of course, no one would find the ingredient “fish scales” on the cosmetic labels. Not unlike the fancy term “caviar” that has been given to fish eggs, fish scales that are ground into a shimmery add-on ingredient for cosmetics are called “pearl essence” or “pearlesence”.
Pearl essence, also known as pearlesence, is the silvery substance that can be found in the scales of shimmering fish such as the herring. The collection of pearl essence is a lucrative by-product of the herring fisheries industry as it is much in demand for use in cosmetics, paint, ceramics, nail polish, and jewelry