Dipropylene Glycol (DPG) is a colorless, odorless, and slightly viscous liquid with the chemical formula C₆H₁₄O₃. It is widely used as a solvent, plasticizer, and humectant in industries such as cosmetics, perfumes, industrial coatings, and plastic production. DPG is miscible with water, alcohols, and many organic solvents. Its low volatility and excellent compatibility make it ideal for use in fragrance bases, inks, and hydraulic fluids.