To get a bit science-y here, saponification is the chemical reaction of making soap. The vegetable oil has three fatty acids that are connected to glycerin, a moisturizing property in soap.

One of the easiest ways to make DIY soap is with the cold process method, which involves combining oils and sodium hydroxide lye, causing a chemical reaction called saponification. In the process ...

The combination of the fats with the lye results in a process called saponification, which neutralizes the lye and makes it safe for use on skin. Once the mixture becomes soap, you can use it to ...

These oils are mixed together to form soap through a chemical reaction called saponification. Then essential oils like peppermint and lavender are added. The final soap is cooled before it's bottled.