Terpineol

Good

Antioxidant

Terpineol at a glance

  • Found in cardamom and essential oils
  • Has anti-inflammatory properties
  • Is an antioxidant that may improve skin’s healthy longevity
  • Promotes an anti-acne environment on skin
  • Can be sensitizing in large quantities

Terpineol description

Terpineol is a type of compound found in cardamom and the essential oils of pine, cajeput, and petitgrain, among others. The term terpineol actually covers four types of terpineols, though for the purposes of this definition it refers to alpha-terpineol. Alpha-terpineol is frequently used in flavorings and fragrances due to its lilac scent. Research finds that alpha-terpineol – as is typical of many components found in essential oils – has anti-inflammatory properties. One study found it down-regulates pro-inflammatory factors within skin, assisting in creating a soothing environment. Like many other plant-derived ingredients, terpineol also exhibits antioxidant properties, with some studies indicating it may even help fight pro-aging cell senescence. This benefit could extend skin’s health even as our biological age increases. In addition to this potential, there’s evidence alpha-terpineol has the ability to foster an environment which discourages the overproduction of “bad” microorganisms on skin. This means terpineol could be useful in an anti-acne facial or body cleanser. While terpineol does have some potential to sensitize skin due to its volatile fragrance components, this is primarily a concern when used in larger quantities. The safe, recommended usage levels of terpineol are 0.05% for leave-on products and 0.25% for rinse-off formulas.

Terpineol references

  • Antioxidants, October 2024, pages 1-14
  • Molecules, March 2024, pages 1-19
  • Journal of Essential Oil Research, March 2023, pages 274-288
  • Plants, December 2022, pages 1-18
  • International Journal of Molecular Sciences, April 2022, pages 1-31

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

Best

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

Good

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

Average

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

Bad

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

Worst

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

unknown

We couldn't find this in our ingredient dictionary. We log all missing ingredients and make continuous updates.

Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.