Steareth-20
Steareth-20
Lower risk than steareth-10 despite the shared backbone.
How solid is the pore-clogging number
Steareth-20 rates 2 of 5 — fine for most, occasionally a problem for very acne-prone skin. The rating is graded moderate. Reasonably supported, but from fewer or less direct sources than the best-established ratings.
It describes the raw ingredient in isolation. In a finished product, how much is present and where it sits in the list matter just as much. Check a whole label to see it in context.