Namely
Glycerol or glycerol is part of the family of polyalcohols, it can be produced synthetically from petroleum derivatives, or from animal or vegetable fats by saponification. It is in the form of a colorless liquid, hygroscopic (which absorbs moisture) and syrupy.
Glycerine is used for its high moisturizing, occlusive (protects the skin of aggressions), emollient (smooth skin and hair) or humectant (allows a product to maintain its fluid appearance).
It has been demonstrated (2005, Andersen) that it has anti-inflammatory power when incorporated into potentially irritating products, such as those using Sodium lauryl sulfate.