DAS self-hardening clay is the world's most popular modelling clay that does not need to be fired. It hardens by itself in air within 24–48 hours, depending on the thickness of the piece. Once dry, the piece can be sanded and then decorated with acrylic paints or markers. For reliable colour protection, we recommend fixing the piece with a clear varnish. The product is not waterproof or suitable for contact with food. If you do not use all the clay from the pack, make sure to wrap it well so that it is not exposed to air and does not harden.