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Astringent

RHUS GLABRA BARK/BERRY/ROOT EXTRACT

CAS 90106-33-5
55

Safety score · 0–100

Moderate

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

Smooth sumac extract — a tannin-rich astringent. Although Rhus glabra lacks the urushiol of poison sumac, cross-reactivity in Anacardiaceae-sensitive people and high tannin load make it a guarded yellow-orange pick.

Function

ANTI-SEBUMASTRINGENTSKIN CONDITIONING

Skin benefits

  • Tannins provide astringent toning effect
  • Phenolic antioxidants from berries
  • Traditional use in Native American skincare

Known concerns

  • Rhus genus members have urushiol cross-reactivity risk
  • Bark and root tannins can be sensitising
  • Limited cosmetic-grade purity data

References

EU

EU CosIng database

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

Related astringents

Same plant / compound family

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