Apoxie�� Clay is a self-hardening clay. Use this air dry modeling clay for faces, hands, or complete sculptures. Great for repairing ceramics, adding to other materials, or using alone. It offers enhanced detail properties, plasticity, and detail finishing with a flat, skin-like texture. Working time is 2-3 hours, accepts paints wet or dry! Adheres to clean surfaces. It can be painted before or after it drys. Water cleanup. It is not an epoxie and is much safer to user for sensitive skin.