Tr
Tristearin
TristearinBarrier
A waxy fat that conditions skin and thickens a product.
What it does
It’s glycerin joined to three molecules of stearic acid, a fatty acid. It’s solid at room temperature.
The evidence, graded
expert consensusUS safety reviewers (2022) assessed 51 triglycerides, which products use mostly to soften skin, seal in moisture or thicken. Their index lists triheptanoin under that report, and its conclusion list names tricaprin, triisononanoin, triisostearin, trilinolein, trilinolenin, tripalmitin and tristearin. They judged all 51 safe as used.Fiume 2022 · International Journal of Toxicology ↗
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.