Function of the role: Tween-20 lauryl sulfate; Tween-60 stearate; Tween-80 oleate are emulsification. Suspensions can be used as wetting agent. Non-ionic surface-active agent.

Dosage: for the preparation of water-in-oil emulsion or cream, used as an emulsifier. Solubilizing oils can also be used (such as a volatile oil).

Note: (1) hemolysis, the weakest of Tween-80 role. (2) heating the aqueous solution can produce cloudy, cold after clarity, and does not affect the quality. (3) in the solution can interfere with the role of the antimicrobial agents