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DIPHENOLIC ACID

CAS 126-00-1 Updated
45

Safety score · 0–100

Moderate

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

About

A bisphenol-A-like phenolic acid (4,4-bis(4-hydroxyphenyl)pentanoic acid). Endocrine-disruption concerns inherited from BPA chemistry make it a poor cosmetic ingredient — use with awareness.

Function

VISCOSITY CONTROLLING

Skin benefits

  • Niche use as polymer/resin precursor
  • Possible viscosity-control in industrial coatings

Known concerns

  • Structural analogue of bisphenol A — endocrine-disruption concerns plausible
  • Listed as Substance of Very High Concern candidate in some assessments
  • Limited cosmetic safety review
  • Avoid in leave-on cosmetics

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.