No, it is not safe to microwave homemade Play-Doh. Homemade Play-Doh recipes often contain ingredients like flour, salt, water, and oil, which can heat unevenly in a microwave. When microwaved, the mixture can become very hot and potentially cause burns or release harmful fumes.
Microwaving Play-Doh may also cause it to dry out, harden, or even catch fire if the heat is not distributed evenly throughout the mixture. Additionally, some homemade Play-Doh recipes include ingredients that are not microwave-safe, such as metallic food coloring or glitter, which could cause sparks or fires in the microwave.
If you need to warm or soften Play-Doh, it is best to do so using your hands or by leaving it at room temperature. Always follow the instructions provided with commercially bought Play-Doh products, as they are specifically formulated for safe use and play.