Is Silly Putty putty?
Actually it’s a dilatant compound ~ a silicone-based polymer that is highly elastic, exhibits high bounce, can be easily molded, yet can hold it shape while at rest. It is non-toxic and non-irritating to the skin. Check in the Eggs. More than 300 million little plastic eggs of Silly Putty have been sold since 1950. Each egg contains 13.3 grams of the stuff.