FAGUS CRENATA BARK

67

Moderate

CAS Number: 97765-59-8

About FAGUS CRENATA BARK

A traditional astringent from Japanese beech bark — packed with triterpenes and tannins that tighten skin and fight free radicals, though the tannin load can be drying.

Detailed Analysis

Fagus crenata (Japanese beech) bark contains triterpenes including betulinic acid, lupenyl esters, and mixed tannins (both condensed and hydrolysable). The betulinic acid content contributes anti-inflammatory and antimicrobial activity. Tannins act as astringents, temporarily tightening skin and reducing sebum appearance. At high concentrations, the tannin content can cause skin dryness or irritation, particularly in individuals with already dry or sensitive skin.

Skin Benefits

  • ✓ Astringent — tightens and refines skin texture
  • ✓ Antioxidant from triterpenes and polyphenols
  • ✓ Anti-inflammatory properties
  • ✓ Antimicrobial activity

Known Concerns

  • ⚠ High tannin content may cause skin dryness and irritation
  • ⚠ Betulinic acid is structurally related to potentially sensitizing compounds
  • ⚠ May be too astringent for dry or sensitive skin types

Safety Score

67

Moderate

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

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EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.