Art Spectrum 500mL Artists' Quality Gesso - WhiteArt Spectrum Artists Acrylic Gesso is a brilliant White ground that provides an absorbent, permanently flexible, waterproof, non yellowing surface. Fast drying, non toxic and can be cleaned up with water. Suitable for canvas, wooden boards and interior masonry surfaces. Intermix or tint with Art Spectrum Inks or other acrylic based colours. Art Spectrum Professional Artists Gesso is also available in Off White, Clear and Black.