The Pro Art 8oz Grey Premium Acrylic Gesso, is a Nonyellowing, rapid drying canvas ground quality acrylic gesso for priming canvas, plaster and hard board. Formulated with tooth and absorbency to accept oil and acrylic colors, pastels, charcoal, pencil and crayons. Do not thin with turpentine, paint thinner or oil. Clean up with soap and water. Conforms to ASTM D-4236