Speedball Fabric Screenprinting Ink is for use on cotton, polyester, blends, linen, rayon and other synthetic fibers (NOT for use on nylon). Also works great on paper and cardboard! Washfast when properly heat-set. Non-flammable, contains no solvents and no offensive smell. AP Non-Toxic conforms to ASTM D-4236. Can be screenprinted or painted on with brush. Archival qualities.