What it is
Steareth-2 phosphate is an anionic emulsifier made by phosphating Steareth-2, an ethoxylated derivative of stearyl alcohol. It helps combine oil and water phases and stabilize emulsions, and it can contribute to a stable, even texture in lotions and creams. It is commonly used in sunscreen emulsions where reliable emulsion stability is needed.
Safety & warnings
Steareth-2 phosphate is generally well tolerated as an emulsifier at typical use levels and is not commonly associated with sensitization.
Origin & sourcing
A synthetic ingredient produced by ethoxylating stearyl alcohol and then converting it to a phosphate ester; the stearyl alcohol portion is often derived from vegetable sources.
Questions everyone asks
What does steareth-2 phosphate do?
It is a phosphate-ester emulsifier that helps blend oil and water phases and keep the emulsion stable.
Is steareth-2 phosphate synthetic?
Yes. It is made by ethoxylating stearyl alcohol and converting it to a phosphate ester, though the stearyl alcohol is often plant-derived.