Polysorbate 80, or Tween 80, is the abbreviation of “polyoxyethylene (20) sorbitan monooleate”, is a nonionic surfactant and emulsifier commonly used in food (with the European food additive number E433) and cosmetics mainly due to its ability to mix water-based and oil-based ingredients well (with a high approximate HLB value 15).
http://www.chinafooding.com/Sorbitan_Monostearate
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