Fragrance Synthetic and Natural

No known benefits

Eugenol description

Volatile fragrance chemical that occurs naturally in cloves, basil, and bay leaves, among other plants. Eugenol is often part of the fragrance in cosmetics products, and is known to cause sensitivity. It is best to avoid leave-on products that contain eugenol.

Eugenol references

  • Toxicology, September 2012, pages 20-24
  • Molecules, June 2012, pages 6,953-6,981
  • Cell Proliferation, August 2006, pages 241-248

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.


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.