CRAYOLA Air-Dry Clay hardens to a durable solid by exposure to air over time. It may take Air-Dry Clay 24-48 hours to dry, but the dried clay becomes stronger with time. More information about Air-Dry Clay can be found at http://www.crayola.com/canwehelp/products/AirDryClay/index.cfm.

Model Magic is also an air drying compound. Model Magic remains somewhat flexible even when dry. It generally takes 24 hours for the moisture in Model Magic modeling compound to evaporate. More information about Model Magic can be found online at http://www.crayola.com/educators/techniques/ModelMagic.cfm.

Drying times for both products can be altered by environmental conditions and the size of your piece.