Troxerutin at a glance

  • Flavonoid ingredient
  • Extract from the Sophora japonica plant
  • Functions as an antioxidant

Troxerutin description

Troxerutin is a flavonoid ingredient that’s extracted from the Japanese plant Sophora japonica, also known as the Japanese pagoda tree. Research has shown it functions as an antioxidant when applied topically, scavenging free radicals and preventing oxidative stress. Some studies have also shown troxerutin to have a photoprotective effect against UVB rays, though it is not an approved sunscreen ingredient. Usage levels tend to reach from 0.4–1%, depending on formulary needs and desired claims.

Troxerutin references

  • Current Neuropharmacology, January 2021, pages 91–110
  • Molecular Medicine Reports, May 2015, ePublication
  • International Journal of Moleculuar Medicine, April 2014, pages 957-963
  • The Journal of Dermatological Treatment, September 2002, pages 133-141

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