Polyethylene glycol (PEG) is a synthetic polymer composed of repeating ethylene glycol units. It is a versatile compound with a wide range of applications in various industries, including pharmaceuticals, cosmetics, and the food industry. PEG is available in different molecular weights, which affects its properties, such as its solubility in water and other solvents. Common uses of PEG include its role as a thickening agent, stabilizer, and moisturizer in cosmetic and personal care products. In the pharmaceutical industry, PEG is utilized as a drug delivery system and in the formulation of various medications. It is also employed in the food industry as an emulsifier and food additive.

One of the key characteristics of PEG is its ability to function as a water-soluble polymer, which makes it valuable in drug formulation and as a carrier for bioactive compounds. It is considered safe for consumption and skin application when used in appropriate concentrations. PEG’s versatility and compatibility with a wide range of other substances have contributed to its widespread use in various industrial and consumer products.