This fine, natural earth clay air-dries to a hard solid. No kiln or oven is necessary. Smoother, finer and less sticky than traditional clay, it s easy to use with traditional modeling techniques such as pinch, coil, slab and score-and-weld. It can also be used to make stamped impressions, beads and more. It softens easily with water and quickly cleans from hands and surfaces. It can be painted with tempera, acrylic or watercolors when dry. The convenient re-usable plastic bucket helps keep clay fresh. Tub color may vary.