Used as a non-ionic surfactant in cosmetic and pharmaceutical formulations due to its ability to solubilize oils and active ingredients in water-based systems. It functions as an emulsifier and stabilizer in creams, lotions, and serums, improving texture and shelf life. Also employed in drug delivery systems to enhance the bioavailability of poorly water-soluble drugs. Its polyether chain provides good hydration and mild skin compatibility, making it suitable for sensitive skin products. Additionally, it can act as a coupling agent in microemulsions and nanoemulsions for topical and transdermal applications.