ElastiWrap Surface Prep aerosol is formulated to prepare painted surfaces prior to applying ElastiWrap or other flexible removable coatings. Its deep penetrating cleaning properties remove embedded contaminants from the surface that can impede top coat adhesion and removal. ElastiWrap Surface Prep also leaves a smooth wax like finish that will enhance adhesion and make topcoat removal easier. Safe for use on all types of glossy painted surfaces as well as safe for glass, plastic and rubber. Two aerosol cans will cover a medium car. For a large car we recommend three cans.