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Fragrance

DECENAL

CAS 65405-70-1 / 21662-09-9 / 30390-50-2
55

Safety score · 0–100

Moderate

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

A decenal fragrance aldehyde with citrus-fatty character. Long-chain unsaturated aldehydes carry sensitizer signals — use under IFRA limits with awareness.

Skin benefits

  • Citrus-fatty fragrance note
  • Perfumery aldehyde

Known concerns

  • Long-chain aldehyde sensitizer
  • Fragrance allergen potential
  • IFRA-restricted
  • Reactive aldehyde

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.