Used primarily as a non-ionic surfactant and emulsifying agent in cosmetic and pharmaceutical formulations. It helps stabilize oil-in-water emulsions, improving the texture and consistency of creams and lotions. Its ethoxylated structure enhances water solubility and reduces irritation, making it suitable for skin care products. Also functions as a penetration enhancer in transdermal drug delivery systems by increasing the permeability of active ingredients through the skin. Additionally, it serves as an intermediate in the synthesis of specialty surfactants and lubricants.