Used as an emulsifier in pharmaceuticals and cosmetics to stabilize oil-in-water emulsions. Helps improve solubility of hydrophobic substances in aqueous formulations. Commonly found in topical creams, lotions, and ointments to enhance skin penetration of active ingredients. Also applied in laboratory settings for cell lysis and protein extraction due to its non-ionic surfactant properties. Used in vaccine production and drug delivery systems to improve absorption efficiency. Suitable for use in some food products as a stabilizing agent where permitted.