Glycerin, also called glycerol and glycerine, is a sugar alcohol that occurs in nature and is also produced synthetically. It is a thick and sticky nontoxic liquid that has no color or odor.

Glycerin has many uses in cosmetics, drugs, and household products. It is used as a moisturizer, a preservative, and a food sweetener. It has value in items that include lotions, soap, and food.