Gesso can be used on most porous and non-porous surfaces like papier mache; canvas; masonries; tin cans; and much more. Coats textured surfaces making them even; smooth; white and ready to paint. Creates a slight texture over smooth surfaces for paint adhesion. Apply over dark colors when base-coating a light color for fewer coats of paint. Will hide slight imperfections in wood and may be sanded when dry. This package contains one 12oz wide mouthed jar.