Crayola Model Magic modeling compound is a lightweight, nontoxic, air-drying compound. It begins to dry permanently when exposed to air. When dry, it feels like a foam cup, remaining light and slightly pliable (spongy). The moisture in Model Magic generally takes 24 hours to dry to the touch; 72 hours to dry completely.
For ideas on how to use this product visit, http://www2.crayola.com/educators/techniques/ModelMagic.cfm .
To purchase this product, visit http://www.crayola.com/where-to-buy.aspx, or for your convenience, purchase online at Crayola.com.