Smooth Max Graffiti Remover 1 Gal - Professional Grade removal of spray paint, marker, pen, ink, crayon, shoe polish, lipstick, pencil, adhesive residue, stains on smooth non-porous surfaces Sprayable thickened gel liquid clings to surfaces without messy drips and runs. Fast all temperature removals from freezing cold to very hot - just a few minutes for most uses Low odor with minimum or no ventilation requirement for added safety, indoors or out. Low VOC 25 g/L, Nonflammable, non-combustible Removal from Metals: Steel, stainless, aluminum, galvanized, brass, copper, anodized aluminum, zinc. Glass, Factory baked on paint, laminated wood, plexiglas, Lexan, vinyl siding, durable Plastics