Polysorbate 80 is a nonionic surfactant and emulsifier widely utilized in skincare and haircare formulations due to its strong solubilizing and dispersing capabilities. Derived from the esterification of sorbitol with oleic acid and ethylene oxide, it plays a pivotal role in stabilizing oil-in-water emulsions by reducing surface tension between hydrophilic and lipophilic phases. In skincare, Polysorbate 80 helps deliver active ingredients more uniformly while improving the texture and spreadability of creams, serums, and lotions. It is especially beneficial for formulations containing botanical oils or oil-based actives, ensuring that these components remain evenly distributed without separation. Additionally, it contributes to the mild cleansing properties of micellar waters and facial cleansers.

In haircare applications, Polysorbate 80 is often used in conditioners, scalp treatments, and cleansing products to help emulsify sebum, dirt, and product buildup without aggressive stripping. Its emulsifying action allows for gentler surfactant systems, improving product performance in formulations for sensitive or chemically treated hair. Because of its gentle nature and compatibility with other cosmetic ingredients, it supports a range of functions including viscosity adjustment, ingredient solubilization, and enhancing rinse-off performance, making it a versatile staple in many professional-grade formulations.