QUARTZ

45

Caution

CAS Number: 14808-60-7

About QUARTZ

Crystalline silicon dioxide — yes, it's a mineral, but the crystalline form is classified as a Group 1 carcinogen when inhaled. Generally not authorised in EU cosmetics. Avoid in powder products.

Detailed Analysis

Quartz (CAS 14808-60-7, PubChem CID: 24261) is crystalline silicon dioxide (SiO₂). IARC classifies crystalline silica (quartz) as a Group 1 carcinogen (sufficient evidence in humans) based on chronic occupational inhalation exposure causing silicosis, lung inflammation, and lung cancer. European regulations do not authorise crystalline silica in cosmetic products due to demonstrated inhalation risks. Amorphous silica (different structure) is the safe form used in cosmetics. The CIR Expert Panel approved only synthetically manufactured amorphous silica. If used in non-inhalable, dermal-only products at appropriate particle sizes, topical risk is lower, but the crystalline form remains a serious concern.

Skin Benefits

  • ✓ Absorbent — oil/moisture absorption
  • ✓ Texture and opacity in formulations

Known Concerns

  • ⚠ IARC Group 1 carcinogen via inhalation
  • ⚠ Causes silicosis with chronic inhalation
  • ⚠ Not authorised in EU cosmetics (crystalline form)
  • ⚠ Extremely hazardous in powder/spray products
  • ⚠ Distinguished from safer amorphous silica

Safety Score

45

Caution

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.