Polyethylene Glycol 400 (PEG 400) is a synthetic polymer of ethylene oxide and water. It is supplied as a clear, odorless, and viscous liquid. PEG 400 is widely used in various industries, including pharmaceuticals, cosmetics, and food. In the pharmaceutical industry, it is commonly used as a solvent, vehicle, and excipient in oral, topical, and injectable formulations. PEG 400 also serves as a humectant in personal care products, helping to retain moisture. It is commonly used in formulations like creams, lotions, and ointments.
