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BUTYL PABA

CAS 94-25-7
35

Safety score · 0–100

Caution

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

About

A UV-B sunscreen filter once common in cosmetics but now largely restricted or banned in the EU due to photosensitivity and endocrine disruption concerns.

BUTYL PABA (butyl para-aminobenzoate, also known as padimate B) is an organic UV-B absorbing ester of PABA. It is listed under EU Cosmetics Regulation 1223/2009 Annex II, entry 167, which prohibits its use in cosmetic products. The prohibition is due to concerns about photosensitization potential, skin penetration, and preliminary findings suggesting endocrine-disrupting activity. While still permitted in some international markets at low concentrations, the EU has taken a precautionary approach and banned it from all cosmetic formulations.

Known concerns

  • EU Annex II/167 – prohibited in all cosmetic products
  • Photosensitization and skin penetration concerns
  • Potential endocrine-disrupting activity
  • Withdrawn from EU market due to safety concerns

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.