Clayette modeling clay is sulfur-free, nonhardening, odor-free and flexible without being sticky. Handling tips: Using small amounts of citrus-based solvents, lighter fluid, latex paint removers, turpentine or mineral spirits as a lubricant on the surface of the clay will help to attain a smooth surface. Unique Prop?s: Clayette will not oxidize and can be left out or heated and cooled repeatedly without any significant change in the product. Clayette will not melt when heated over 300 degrees F. Working Temp: Clayette is generally used at room temperature but can be warmed to soften. Additional Details ------------------------------ Product description: Clayette modeling clay is sulfur-free, nonhardening, odor-free and flexible without being sticky. Handling tips: Using small amounts of citrus-based solvents, lighter fluid, latex paint removers, turpentine or mineral spirits as a lubricant on the surface of the clay will help to attain a smooth surface. Unique Prop?s: Clayette will not oxidize and can be left out or heated and cooled repeatedly without any significant change in the product. Clayette will not melt when heated over 300 degrees F. Working Temp: Clayette is generally used at room temperature but can be warmed to soften.