Moist and ready to use! Self-hardening clay is suitable for all hand methods of modeling. When exposed to air, self-hardening process begins and clay projects should be completed in one sitting. When dry, modeled objects are hard and durable without any firing. Dries to a rich red color. Decorate dry pieces with acrylics or varnish for extra strength. 25 lb. package. Gluten-free. AP Seal, non-toxic. Does not qualify for free shipping.