All Squishy Circuits need dough! This kit comes with over 4 pounds of conductive and insulating play dough in 8 colors! The dough kit includes 7 containers of conductive dough and 1 container of white insulating dough! Each container holds 7 ounces. The dough does contain gluten, but is safe and non-toxic. The conductive dough does dry out if left out of the container, but the insulating dough does not dry out.