Product Description Speedball Fabric Screen Printing Inks are brilliant colors including fluorescent and process colors for use on cotton, polyester, blends, linen, rayon and other synthetic fibers (NOT for use on nylon). Also works great on paper and cardboard. Wash fast when properly heat-set. Non-flammable, contains no solvents and no offensive smell. AP Non-Toxic, conforms to ASTM D-4236. Can be screen printed or painted on with a brush. Archival qualities.