Can I melt soap in the microwave?

You can melt soap in the microwave, just be sure to use microwave-safe dishes. Use glycerine soap pieces or bar (other soaps may explode in the microwave), and grate or chop the soap into very small pieces. Put the pieces into a microwave-safe dish and either add a lid or microwave-safe food wrap to prevent splatters. Then, microwave on high in spurts of 15 to 20 seconds. Remove and stir, then continue heating in bursts until the melting is done (reduce to 5 second bursts when close to melting). Handle the melted soap with care, as it will be very hot.