Glycerin, also known as glycerol, is a versatile, colorless, odorless, and sweet-tasting liquid with a syrupy consistency. It is a polyol compound that can be derived from plant oils (like palm or coconut), animal fats, or produced synthetically. As a powerful humectant, glycerin’s defining characteristic is its ability to attract and retain moisture from the environment.

Externally, this property makes glycerin a cornerstone of the cosmetics and personal care industries. It is a primary ingredient in moisturizers, soaps, and lotions to hydrate the skin, improve its barrier function, soothe irritation, and aid in wound healing. It’s also used in hair care products to add moisture and shine and in toothpaste to prevent it from drying out.

Internally, glycerin has several key applications. It serves as a stimulant laxative by drawing water into the intestines to soften stools and promote bowel movements. In the food industry, it is used as a sugar substitute, providing sweetness with a lower glycemic index, and as a preservative and moistening agent. In pharmaceuticals, it acts as a solvent and excipient in medications like cough syrups and is used to reduce pressure in the eyes (glaucoma) and brain