Tr
Trihydroxystearin
TrihydroxystearinBarrier
A wax from castor oil that thickens oily products. It gels balms, holds pigments and keeps oils from separating.
What it does
It thickens and gels oils, holds pigments in place and keeps oily products from separating, which is why it’s in balms and makeup. It’s made from castor oil. It’s there for texture, not to change your skin.
The evidence, graded
expert consensusUS safety reviewers (2022) assessed 51 triglycerides. Their index lists C10–18 triglycerides, triethylhexanoin, triolein, caprylic/capric/myristic/stearic triglyceride and trihydroxystearin under that report. Its conclusion list names C18–36 acid triglyceride and triarachidin. Most soften skin, seal in moisture or thicken formulas, and the reviewers 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.
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