"When I was in college, in my Economics elective of Industrial Organization, we were tasked to find examples of a market oligopoly (an oligopoly is a market structure in which a few firms dominate). My classmate and I decided to showcase the current Nail Polish oligopoly that exists, by conducting research in our local pharmacies. Can you name the top brands we found? I’m sure you can; Essie and Opi. Now, can you name any others? Ah ha!"