Art Alternatives titanium-based white acrylic primer provides a reliable, classic foundation which is permanent, non-yellowing and flexible when dry. No prior sizing necessary. Great for artists and students alike, it may be used on a variety of porous surfaces, such as canvas, wood and other panels, or paper with oil, acrylic, alkyd and spray paint. Multiple coats may be sanded to create a smooth portrait surface. Perfect for students White priming ground may be used on a variety of absorbent surfaces Use with acrylics - oils - temperas Dries quickly - will not yellow or crack