Used as an emulsifier and solubilizer in pharmaceutical and cosmetic formulations. Helps stabilize oil-in-water emulsions and improves the dispersion of active ingredients. Commonly found in topical creams, ointments, and lotions where it enhances skin feel and promotes uniform delivery of lipophilic compounds. Also utilized in some oral dosage forms to improve bioavailability of poorly water-soluble drugs by promoting micelle formation in the gastrointestinal tract. Its non-ionic nature makes it compatible with a wide range of ingredients and suitable for sensitive formulations.