Polyoxyethylene (4) Lauryl Ether

Polyoxyethylene (4) Lauryl Ether or Laureth-4 functions as surfactant and emulsifier. Surfactants and emulsifiers are molecules that have at least 2 distinct sides: one side is compatible with water and one side is compatible with oils. They are added to cosmetic products to enable the mix of non-mixable liquids to become compatible and stable over time by reducing the surface tension of substances.