Poly(ethylene glycol) is widely used in pharmaceuticals as a solvent, plasticizer, and binder in tablet formulations. It helps improve drug solubility and stability, making it essential in drug delivery systems. In the cosmetic industry, it acts as a moisturizer and thickener in creams, lotions, and shampoos. Its lubricating properties make it valuable in industrial applications, such as in the production of metalworking fluids and as a component in antifreeze solutions. Additionally, it is utilized in biotechnological research for protein crystallization and as a medium for cell culture. Its non-toxic nature and water solubility also make it a key ingredient in medical and surgical products, including ointments and laxatives.