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Crayon Melting

Q. Is there anything wrong with melting crayons in a kosher oven?

A. From a kashrus perspective, there is no concern, although you may want to consult with health experts to ensure that doing so does not pose any safety concerns.

The main ingredient in crayons tends to be paraffin wax, an innocuous wax, and although some crayons contain kosher-sensitive ingredients such as stearic acid, those minor ingredients are batel b'rov in the inedible paraffin.