St
Stearyl Dimethicone
Stearyl DimethiconeBarrier
A wax-like silicone — thickens balms and makeup and leaves a smooth, slightly water-repellent finish.
What it does
A silicone with a long fatty chain added, which makes it waxy rather than runny. It thickens oils, softens skin, and adds a smooth, somewhat water-repellent finish to balms and makeup.
The evidence, graded
expert consensusUS safety reviewers (final amended report, 2022) assessed 30 dimethicone and methicone silicones, most used to condition skin and hair. Stearyl, cetyl and vinyl dimethicone, amodimethicone and methicone are named in their conclusion. They judged all 30 safe as used in products made to be non-irritating. They had too little data to judge airbrush sprays.Raj 2022 · Cosmetic Ingredient Review ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Browse all 1238 ingredients — grouped by what they do, each with whatever evidence we can cite.
This page is public so a shared ingredient card always has its sources behind it — and so you can check them without an account.
Want more like this?
Every evidence-based flag cites its source, Drop tells you when your routine is complete, and it helps you simplify — instead of selling you more. The app launches on iOS and Android in October 2026. Rate my routine works today at /rate — no sign-in.