Vegetable Glycerin Natural Firstly, Glycerol in our Vegetable Glycerin Pure Natural is a simple polyol (sugar alcohol) compound. It is a colorless, odorless, viscous liquid that is widely used in pharmaceutical formulations. Moreover, Natural Vegetable Glycerin has three hydroxyl groups that are responsible for its solubility in water and its hygroscopic nature. The glycerin backbone is central to all lipids known as triglycerides. Glycerin is sweet-tasting and of low toxicity. Consider adding these essential oils and skincare products! Vegetable Glycerin is used in personal care preparations. Mainly as a means of improving smoothness, providing lubrication, and as a humectant. It is found in allergen immunotherapies, cough syrups, elixirs and expectorants, toothpaste, and lastly mouthwashes.