If you stick a piece of Ivory soap in the microwave you get an expanding lump of craziness! This is because Ivory soap has lots of air molecules trapped inside (if is also the only soap that floats). When the air is headed it expands and bounces around and tries to make more room for itself. When the mess cools it stays all fluffy! We are going to use the soap for the bathtub and washing out hands. So nothing went to waste!