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Preservative

4-HYDROXYBENZOIC ACID

CAS 99-96-7 Updated
65

Safety score · 0–100

Fine

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

About

The aromatic acid that is the parent of all parabens (PHBA). Used as a preservative within EU concentration limits. Generally low-irritation but inherits class concerns about weak hormonal activity.

Function

FRAGRANCEPRESERVATIVE

Skin benefits

  • Effective broad-spectrum preservative
  • Naturally occurring molecule

Known concerns

  • Paraben-family parent — weak endocrine class concerns
  • EU regulated
  • Possible sensitization

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.