Poly(ethylene glycol) is widely used in pharmaceuticals as a base for ointments, suppositories, and topical creams due to its water-soluble and non-irritating properties. It serves as a lubricant in eye drops and as a binder in tablet formulations. In the medical field, it is utilized as a laxative and for bowel preparation before surgeries or colonoscopies. It also plays a crucial role in bioconjugation, where it is attached to proteins and peptides to improve their stability and reduce immunogenicity. In industrial applications, it acts as a dispersing agent, plasticizer, and surfactant in various products like adhesives, coatings, and inks. Additionally, it is used in cosmetics for its moisturizing and thickening properties. In research, it is employed in cell fusion techniques and as a cryoprotectant for preserving biological samples.