O-PHENYLPHENOL

Other

42

Caution

CAS Number: 90-43-7

About O-PHENYLPHENOL

A preservative with EU restrictions allowing limited use (max 0.15% leave-on, 0.2% rinse-off as phenol); associated with irritancy and sensitization concerns and with specific salt forms banned.

Detailed Analysis

o-Phenylphenol (biphenyl-2-ol) is a phenolic preservative permitted in EU cosmetic products under specific restrictions: maximum 0.15% (as phenol) in leave-on products and 0.2% (as phenol) in rinse-off products per EU Cosmetics Regulation Annex V. Eye contact must be avoided. Sodium o-phenylphenate, potassium o-phenylphenate, and MEA o-phenylphenate are banned as preservatives. Hazard statements H315, H318, H400 apply for skin irritation, serious eye damage, and aquatic toxicity.

Skin Benefits

  • ✓ Preservative efficacy

Known Concerns

  • ⚠ Skin irritant (H315)
  • ⚠ Serious eye damage (H318)
  • ⚠ Environmental hazard (H400)
  • ⚠ Restricted use limits apply
  • ⚠ Specific salt forms banned

Safety Score

42

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.