Triolein at a glance

  • Triglyceride derived from glycerin and three units of oleic acid
  • Used as a skin protectant, conditioning agent, and emollient
  • Exhibits many characteristics of oleic acid
  • Can have anti-inflammatory benefits + help reduce oxidative stress
  • Ruled safe as used in cosmetics

Triolein description

Triolein is a triglyceride derived from glycerin and three units of the fatty acid oleic acid. In cosmetics, it is used as a skin conditioning agent, and emollient. It exhibits many of the same characteristics as oleic acid itself. Some studies have suggested that triolein also has soothing effects and can reduce oxidative stress in skin damaged by UVB radiation. The independent Cosmetic Ingredient Review panel has ruled triolein safe as used in skin care products. Typical usage levels of triolein in cosmetics are on the low side, ranging from 0.00053%–0.14%.

Triolein references

  • International Journal of Toxicology, December 2022, pages 22-68
  • Journal of Dermatological Science, February 2017, pages 124-130

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not Rated