Propylene Glycol USP Propylene Glycol is a widely used product across many industries. In the cosmetic and personal care industry, Propylene Glycol is used to hold the moisture in the skin. It is commonly used in hair care products (shampoo & conditioner), hair dies, cosmetics and pet care products, and is particularly well suited for use in face masks as it can prevent over drying. Propylene Glycol can also be used as an ingredient in fragrance oils, massage oils, saline solutions, antibacterial lotions and hand sanitizers. Ingredients: Propylene Glycol Appearance: Clear, Oily Liquid Grade: Pharmaceutical grade - Complies with USP (United States Pharmacopoeia)