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Fragrance

4-TERPINEOL

CAS 562-74-3
55

Safety score · 0–100

Moderate

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

Terpinen-4-ol — the main active in tea tree oil. Antimicrobial and useful for blemishes, but it carries clear GHS skin/eye irritation warnings and is a known sensitizer.

Function

FRAGRANCE

Skin benefits

  • Antimicrobial activity (key tea-tree component)
  • Aromatic fragrance ingredient
  • Some anti-inflammatory data

Known concerns

  • GHS H315 skin irritation
  • GHS H319 serious eye irritation
  • GHS H335 respiratory irritation
  • Tea-tree-family sensitizer
  • H302 harmful if swallowed

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, so always read the physical product label and consult a healthcare professional for personal concerns.