Used as a surfactant and solubilizing agent in cosmetic and pharmaceutical formulations due to its ability to enhance the solubility of poorly water-soluble compounds. Commonly found in topical creams and lotions where it helps improve texture and skin penetration of active ingredients. Also employed in industrial cleaning products for its mild emulsifying properties. In research settings, it serves as a phase transfer catalyst and is utilized in the synthesis of nanomaterials and polymers. Its high degree of ethoxylation provides good water solubility and low toxicity, making it suitable for applications requiring biocompatibility.