Now you can experience block printing on fabric with Speedball's Fabric Block Printing Ink! This permanent oil based ink provides bold opaque colour, dries to the touch overnight & remains permanent through the wash with no heat set required. It is designed to work well on both natural & synthetic fabrics (cotton, polyester blends, linen, rayon & other synthetic fibers). Ink won't crack or peel over time. Non-toxic, cleans up easily with soap & water. 2.5oz.