Mirror coatings were derived as a functional reflective coating to help redirect sunlight from the surface of lenses. Since its introduction many derivations of mirror coatings have been produced creating a wide range of colored mirror coatings and functional purpose. Different applications have also been introduced creating a multifunctional purpose and a cosmetic market for mirror coatings with flash mirror coatings. Below you will find descriptions of the composition, maintenance, types, and correlation of mirror coatings with tins and polarized lenses.