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FRANGULA ALNUS BARK

CAS 84625-48-9
58

Safety score · 0–100

Moderate

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

About

A bark extract from alder buckthorn containing anthraquinone glycosides with strong laxative effects and potential phototoxicity concerns.

Frangula Alnus (Alder Buckthorn) bark contains anthraquinone glycosides including frangulin A and B, and emodin glucoside as primary constituents. Anthraquinones are stimulant laxatives when ingested; however in topical application they function as colouring agents and may provide mild antimicrobial benefits. Emodin and related anthraquinones are phototoxic — they absorb UV radiation and can generate reactive oxygen species, increasing skin damage risk from sun exposure after topical application. The bark also contains tannins which may cause irritation.

Skin benefits

  • Mild antimicrobial
  • Colouring agent
  • Astringent

Known concerns

  • Known phototoxin — anthraquinones increase UV-induced skin damage risk
  • Emodin is a photosensitising anthraquinone
  • Mild irritant due to tannin content
  • EU cosmetics use may be restricted due to anthraquinone content

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.