Benefits of Hot Process Soap Using a Crock Pot
David Fisher. In the world of soap making, there are several processes or styles of soap making. There’s melt and pour which uses a pre-made base that you melt and add fragrance and color too. There’s cold process which mixes the melted oils and lye together but doesn’t add any additional heat. The saponification process makes its own “heat” and the soap hardens and saponifies overnight.