Speedball Professional Relief Ink is a water-miscible, oil-based printmaking ink comprised of quality, lightfast pigments available with no added fillers. The ink delivers rich, intense, crisp prints with the archival qualities professionals demand, and is formulated for the working properties professional artists desire; consistent roll-out, beautiful transfer, tack and holds fine details. Just as importantly, the ink easily cleans up with soap and water. Oil-based Lightfast Easy clean-up