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 vegetable oil has three fatty acids that are connected to glycerin, a moisturizing property in soap. It's mixed with an alkali, which is sodium hydroxide for bar soaps and potassium hydroxide ...

These can be hydrolysed when they are heated with sodium hydroxide or potassium hydroxide. This results in the formation of glycerol and a salt - soap. \(Fat/Oil + Sodium\, Hydroxide \rightarrow ...