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Cold porcelain is an inexpensive, non-toxic, easy-to-work-with material.
Despite its name, it is not porcelain; its main components are cornstarch and white glue, but can also include small amounts of oils and glycerol, which promote a porcelain-like, smooth texture. Because most of the constituents are biodegradable, lemon juice or sodium benzoate are sometimes used to prevent the growth of bacteria and fungi.
Cold porcelain can be made at home, with or without applying heat to the mixture. Once sculpted into a finished craft, it does not require heat to cure, instead hardening by exposure to air. It can be used for a variety of small projects. Once cured, it is easily softened or even dissolved by heat or water.