Propylene Glycol (of vegetable origin) - is a synthetic organic compound, It is a clear, colorless, syrupy liquid, which is odorless and tasteless. It is a synthetic liquid, absorbs moisture and is completely soluble in water. Propylene glycol comes from petrochemical sources.
Propylene glycol is a humectant, which means it helps the skin to absorb moisture. Its property of absorbing moisture allows it to do this. It helps to carry the water-based ingredients into the skin. In hair care products, it softens the hair and allows it to be combed through easily.