St
Steareth-20
Steareth-20 · Steareth-21
A non-ionic emulsifier that helps oil and water blend into a stable, smooth cream.
What it does
Steareth-20 and the closely related Steareth-21 are non-ionic emulsifiers made from stearyl alcohol. They lower the tension between oil and water so the two phases blend into a stable emulsion; they are often paired with a lower-number steareth to fine-tune the balance. They are structural emulsifiers rather than skin actives.
This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
Want more like this?
Get Drop, free. Every flag cites its source, the app tells you when your routine is complete, and it helps you simplify — instead of selling you more products.