+A **surfactant** is a compound that lowers the [surface tension](/wiki/surface_tension) between two phases, like a liquid and a gas, or two immiscible liquids. These unique molecules stabilize mixtures, allowing liquids to spread more easily or form [emulsions](/wiki/emulsion) in myriad applications from cleaning products to biological systems.
+## See also
+- [Detergent](/wiki/detergent)
+- [Soap](/wiki/soap)
+- [Emulsion](/wiki/emulsion)
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