Emollient
TRIHEPTANOIN
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A medium-chain triglyceride — glycerol esterified with three heptanoic (C7) fatty acids. Silky emollient with a light dry finish; FDA-approved as a rare-disease drug, very well characterized.
Triheptanoin (CAS 620-67-7, PubChem CID 69286) is the triester of glycerol with heptanoic acid. In cosmetics it serves as a lightweight emollient with a dry silky afterfeel, and as a carrier for lipophilic actives. It is also FDA-approved (Dojolvi) for long-chain fatty-acid oxidation disorders, giving it an unusually deep toxicology package. ECHA C&L notifications show H315 (skin irritation) at 37.9% of reporters and environmental H411; 62.1% do not classify it as hazardous. No CMR or endocrine concerns; not a common sensitizer. Used at 1–20% in emulsions, lip care and anhydrous sticks.
Function
Skin benefits
- Lightweight emollient
- Non-greasy skin feel
- Medium-chain triglyceride stability
- Good vehicle for lipophilic actives
Known concerns
- Mild skin irritation possible (ECHA H315 37.9% notifiers)
- Not meant for aquatic release
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related emollients
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.