Methoxypolyethylene glycol is widely used in the pharmaceutical industry as a modifying agent for proteins and peptides to enhance their solubility, stability, and circulation time in the body. It is commonly employed in the process of PEGylation, where it is attached to therapeutic molecules to reduce immunogenicity and improve drug delivery efficiency. In the cosmetics industry, it serves as a moisturizing agent and emulsifier, helping to stabilize formulations and improve the texture of skincare products. In the food industry, it is used as a stabilizer and to improve the texture of products such as ice cream and sauces. Additionally, it is utilized in industrial applications as a lubricant and dispersant, aiding in the smooth operation of machinery and the even distribution of particles in various mixtures. Its versatility and biocompatibility make it a valuable component across multiple sectors.