Poly(ethylene glycol) is widely used in pharmaceuticals as a solvent, binder, and lubricant in tablet formulations. It also serves as a base for ointments and suppositories due to its water-soluble and non-irritating properties. In biotechnology, it is utilized for cell fusion and protein crystallization. Additionally, it acts as a stabilizer and coating agent in various cosmetic products. In industrial applications, it is employed as a plasticizer, dispersing agent, and in the production of polyurethanes and other polymers. Its ability to modify surface properties makes it valuable in coatings and adhesives.