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Astringent

QUERCUS INFECTORIA FRUIT EXTRACT

CAS 93165-57-2 Updated
68

Safety score · 0–100

Fine

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

About

Tannin-rich extract of oak gall used as a strong astringent and antimicrobial. Generally well tolerated in rinse-off and toners, but heavy tannin content can dry skin or irritate compromised barriers.

Function

ANTIOXIDANTASTRINGENTTONIC

Skin benefits

  • High tannin content gives strong astringent action
  • Antimicrobial against skin pathogens
  • Anti-inflammatory polyphenols
  • Traditional wound-care use

Known concerns

  • High tannin load can dry or tighten skin
  • Possible irritation on broken skin
  • Limited cosmetic-specific safety data
  • Contact allergy possible in sensitive users

References

EU

EU CosIng database

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

Related astringents

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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.