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Antioxidant

POLYGONUM CUSPIDATUM EXTRACT

Updated
76

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Japanese knotweed (Polygonum cuspidatum) extract — the main commercial source of resveratrol. Useful antioxidant, with a small caveat around emodin content at high doses.

Function

SKIN CONDITIONING

Skin benefits

  • Source of resveratrol — antioxidant
  • Anti-inflammatory polyphenols
  • Studied for skin barrier support

Known concerns

  • Emodin (anthraquinone) content — theoretical phototoxicity at high levels
  • Variable resveratrol concentration

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.