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Absorbent

OSTREA SHELL POWDER

CAS 94465-79-9 Updated
78

Safety score · 0–100

Fine

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

About

Powdered oyster shell — predominantly calcium carbonate. Used as bulking, absorbent, or gentle exfoliant. Generally well-tolerated; particle size determines abrasiveness.

Skin benefits

  • Calcium carbonate-based bulking and absorbent powder
  • Mildly exfoliating in scrub products
  • Natural mineral source

Known concerns

  • May be scratchy/abrasive depending on particle size
  • Trace heavy metal concern in unrefined shellfish-source material
  • Inhalation hazard for fine powders during manufacture

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.