The ingredient, explained
Triolein
Triolein has published research relevant to cosmetic safety assessment.
Ingredient guide
What it is and what it does
1‚2,3-Propanetriyl trioleate
About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗
- Skin conditioning
- A broad cosmetic role for maintaining skin condition. It does not identify a particular clinical benefit.
- Viscosity controlling
- Adjusts how thick or fluid a product is.
Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗
Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.
A closer look
What the research shows
Safety assessment
The report evaluates glyceryl triester toxicology, with little dermal triolein uptake in studied animals and a caution that some triesters can increase coingredient penetration.
What this does not tell us
Group cosmetic safety review with substantial evidence from other triesters and route-specific injection findings. Vehicle use is safety information rather than proof of skin benefit.
Sources for this summary. PubMed 11800053 ↗
Research review checked Oct 1, 2026
Selective exact-identity review of 1 supplied local candidates and the targeted primary-source search recorded below. Bounded review, not a systematic search.
Ingredient research is not proof that a product containing this ingredient works.
Read the 1 selected study
Safety assessment
Final report on the safety assessment of trilaurin, triarachidin, tribehenin, tricaprin, tricaprylin, trierucin, triheptanoin, triheptylundecanoin, triisononanoin, triisopalmitin, triisostearin, trilinolein, trimyristin, trioctanoin, triolein, tripalmitin, tripalmitolein, triricinolein, tristearin, triundecanoin, glyceryl triacetyl hydroxystearate, glyceryl triacetyl ricinoleate, and glyceryl stearate diacetate. ↗
International journal of toxicology · 2001
Follow the formula
Products containing this ingredient
From the wider catalogue. Linked by the ingredient list, without an efficacy ranking.
Names and identifiers
Registry identity
1‚2,3-Propanetriyl trioleate
- INCI name on ingredient lists
- TRIOLEIN
- CAS registry number
- 122-32-7
- EC number
- 204-534-7
Sources for this ingredient record
- EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗ · ODbL 1.0 (Open Beauty Facts database) · Recorded Aug 8, 2026