emulsifier
Tween 65
INCI: Polysorbate 65
What is it?
Tween 65 starts from sorbitan tristearate, meaning three stearic acid chains attached to the sorbitan ring rather than the single chain used in most other Spans, which is then ethoxylated the same way as the rest of the Tween family. Those extra two fatty acid chains are what set it apart from its close relative Twe...
How is it used?
Being a waxy solid, it typically needs melting into the formulation, similar to handling a solid Span despite it being a water-associating ingredient. It's commonly paired with Span 60, its saturated stearate counterpart, for a chain-matched HLB blend.
Create an account to read the full guide
Sign up free to unlock use levels, substitutions, formulation guidance, and storage advice.