Nail polish

Nail polish is something that girls put on their nails, if you didn't know, but yes they contain a lot of chemicals that make some of them chip ressitant, even though they chip anyway. (false advertising anybody?) But yes clear coats are made of nitrocellulose, which give them that beautiful shine when you use it as a top coat. 

http://chemistry.about.com/od/chemicalcomposition/a/Nail-Polish-Chemistry.htm