Plant extracts

Coumarin description

Organic compound found in plants and derived from the amino acid phenylalanine. It creates the fragrance in fresh-mowed hay. More than 300 coumarins have been identified from natural sources, especially green plants. However, simple coumarins are potent antioxidants.

Coumarin references

  • Journal of Natural Products, September 2001, issue 9, pages 1238-1240
  • Chemistry and Physics of Lipids, December 1999, issues 1-2, pages 125-135
  • General Pharmacology, June 1996, issue 4, pages 713-722

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