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4-THUJANOL

CAS 546-79-2
62

Safety score · 0–100

Fine

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

About

4-thujanol is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

4-Thujanol is a monoterpene secondary alcohol found in the essential oils of plants such as Thuja occidentalis. It is listed as a potential fragrance allergen under EU Cosmetics Regulation Annex III. Like other monoterpene alcohols, it may oxidise on air exposure to form sensitisers, and its use is restricted in leave-on cosmetic products.

Known concerns

  • Potential contact sensitiser upon oxidation
  • Essential oil component with variable composition

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.