Propylene glycolis a colorless, nearly odorless, thick liquid. It has a variety of uses beyond being a food additive. It's used in many products because it helps them maintain their consistency, moisture, and texture.

Apart from using it as a preservative and flavor enhancer, food manufacturers also use propylene glycol as an emulsifier, a texturizer, and a processing aid to enhance food's appearance.

Examples of packaged foods that contain the product include: