Used primarily as a surfactant and emulsifying agent in cosmetic and personal care formulations. It helps stabilize mixtures of oil and water, improving the texture and consistency of lotions, creams, and serums. Its long hydrocarbon chain provides lipophilic properties, enhancing skin feel and moisture retention. Also functions as a viscosity modifier in topical products. Occasionally used in pharmaceutical formulations to improve the delivery of active ingredients through the skin due to its mild penetration-enhancing effects.