Glycerin is a three-functional alcohol that is soluble in water in any proportion. It is a sweet-tasting, colorless, odorless, and viscous compound. High-purity glycerin is used in pharmaceuticals. Glycerin retains moisture on the skin’s surface and is a good solvent, making it widely used in various cosmetic and personal care products for formulating lotions and facial creams, soaps, hygiene oils, toothpaste, mouthwash, expectorants, and shaving creams.