A pre-mixed black acrylic ground to prepare your surface and add instant color. Smooth and absorbent, it can be used on all types of porous surfaces, including canvas, paper, fabric, wood and plaster. It contains a blend of pigments to give a matte black, opaque base which instantly eliminates your surface color and allows you to build depth. Primes surfaces and adds a high level of tooth for maximum color adhesion and stability. Establishes a good surface for preliminary charcoal or pencil drawings. If using as a base for oils, apply 2-4 coats and sand between applications. Apply with a brush, roller or squeegee to the entire painting surface. Not for mixing with oils. 8 oz. Clean up with soap and water. AP Seal, non-toxic.