Nail Base Gel Opi Start To Finish 15 ml is what you need to maximise your appeal! Try the quality of 100% original Opi products & let the best professionals enhance your beauty.. Gender: Lady. Capacity: 15 ml. Ingredients. Camphor. Hydrolyzed wheat protein. Isopropyl alcohol. Alcohol denat (ethyl alcohol). Butyl Acetate. Ethyl Acetate. Type: Enamel. Properties: Hardener