Silly Putty® is made primarily from silicone and color pigments. Silicone is an oil-based product and by nature will not dry out. If Silly Putty is left out of the container over a period of several years, it may harden due to other ingredients contained in the putty. The other ingredients are proprietary and cannot be shared.
If you have additional questions, we would love to hear from you! Feel free to call or text us at 1-800-CRAYOLA weekdays between 9 AM and 4 PM Eastern Time. If you would prefer to send us an email, visit our contact us page.
Related Questions
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Silly Putty is not intended for use as ear plugs. Known as a "solid liquid", it will not maintain a molded shape. It is composed of a silicone material that becomes softer when exposed to normal body temperature. In addition, changes in atmospheric pressure could force the material to flow deeper into the ear than intended, possibly making contact with the eardrum.
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Technology has changed over the years, eliminating the transfer of messy newspaper comic ink to skin. Since nontransferable ink is now used, newspaper comic print will generally not transfer onto Silly Putty® as it did in the past. Silly Putty can, however, easily lift pencil marks from paper.
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Silly Putty® was discovered in 1943 by James Wright who mixed boric acid and silicone oil together. It was introduced to the public in 1950 by Peter Hodgson. Crayola® acquired the exclusive manufacturing rights to Silly Putty in 1977. Although the exact formulas Crayola uses to make Silly Putty are proprietary, we can share it is made primarily from silicone and color pigments.
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Silly Putty is made primarily from silicone and color pigments. Silly Putty was discovered in 1943 by James Wright and introduced to the public in 1950 by Peter Hodgson. Crayola acquired the exclusive manufacturing rights to Silly Putty in 1977. The formulas are considered proprietary.
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If your pet has ingested a Crayola or Silly Putty product, please contact a veterinarian for assistance. All Crayola and Silly Putty products have been evaluated by an independent toxicologist and found to contain no known toxic substances in sufficient quantities to be harmful to the human body, even if ingested or inhaled. In addition, Crayola and Silly Putty art materials carry the Art and Creative Materials Institute's (ACMI) APPROVED PRODUCT (AP) seal, which indicates these products meet or exceed specific quality standards.