Steareth-10 is a nonionic surfactant derived from stearyl alcohol and ethylene oxide, containing an average of 10 moles of ethylene oxide. It functions as an emulsifier, solubilizer, and dispersing agent, commonly used in creams, lotions, shampoos, and other personal care products. With a medium HLB value, it helps stabilize oil-in-water emulsions while also improving product spreadability and texture.