The frottage technique is accomplished with the use of paint (oil or water based), glaze, and sheets of paper or plastic. The base coat is painted and left to dry. A second glaze coat of a different color is applied liberally, a sheet of paper or plastic is placed over the surface and rubbed smooth, the paper or plastic is then peeled away form the surface, and the process is repeated until all surfaces have been covered. This finish is useful for murals (for nondescript backgrounds or to distress the ground coat when creating faux marble). Artist, muralist, Emily Smith displays examples of her frottage faux painting work.