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MYRTENAL

CAS 564-94-3
52

Safety score · 0–100

Moderate

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

About

A monoterpene aldehyde found in myrtle and eucalyptus essential oils, used as a fragrance ingredient. Known sensitiser and subject to IFRA restrictions on use in leave-on products.

Myrtenal (p-menthadienal) is a monoterpene aldehyde occurring naturally in myrtle (Myrtus communis), eucalyptus, and some citrus oils. It is used as a fragrance ingredient contributing fresh, green, and slightly spicy notes. The SCCS and IFRA have identified it as a skin sensitiser requiring concentration restrictions, particularly in leave-on cosmetic products where maximum use levels are strictly limited.

Skin benefits

  • Contributes fresh, natural green fragrance notes

Known concerns

  • Skin sensitisation hazard requiring IFRA restrictions
  • Limited to low concentrations in leave-on products
  • Found in essential oils - allergen labelling applies

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.