what is glycerin soap made of
This results in each fatty acid molecule being bound to a carbon atom in the glycerin molecule. This process also liberates a molecule of water for each fatty acid molecule for a total of three water molecules. Making Soap at Home. Soap is made from fats and lye. The manufacture of soap is a complex process with multiple steps, but it involves using the lye to break the fat down into sodium salts of fatty acids and glycerin. An at-home soapmaker will make the soap directly from this mixture of sodium salts of fatty acids and glycerin, and simply pour the mixture into molds.