If you’re a regular reader of the blog, you know cold process is my favorite method of soap making; it’s how I originally learned to make soap, and is my “first love.” But, there are multiple ways to create gorgeous soap, including hot process soap making. Hot process soaping is a fantastic (and quick!) method that results in a rustic style bar of soap.
The main difference between the cold process and hot process methods is temperature. In cold process, hot oils and lye are combined to initiate the saponification process. The soap is then set aside for several days to harden and set up. In hot process, hot oils and lye are combined to begin saponification, and then introduced to heat via a Crock Pot or double boiler. The additional heat speeds up the saponification process and “cooks” the soap before it goes into the mold. This cuts down dramatically on the wait time! Make sure when making hot process soap, that your recipe does not fill up the Crock Pot more than halfway. Hot process soap tends to expand, and you don’t want it overflowing!