Acrylic screen printing inks for use on paper, wood, cardboard, and properly primed surfaces. Water-based, non-toxic, and non-flammable. Easy clean-up with water. Jars have inner seal. Contains no solvents and has no offensive smell. AP Non-Toxic conforms to ASTM D-4236. Can be screen printed or painted on with brush. Not recommended for fabrics to be laundered. Mix with Speedball Extender Base for transparency.