A paint prepper prepares a vehicle body or other surface for painting. In this career, your job duties include all aspects of preparation. Your responsibilities involve steps such as the removal of dirt from the surface and parts due for painting. You may sand, polish, retouch, buff, degrease, or otherwise clean the surface. You may also mix color, blend paint, and load paint into spray-painting equipment. A paint prepper may sometimes need to apply primer to the surface to prepare and protect it until the painters perform their job.