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CIS-4-DECENAL

CAS 21662-09-9
78

Safety score · 0–100

Fine

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

About

Cis-4-Decenal is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.

Cis-4-decenal is a ten-carbon unsaturated aldehyde belonging to the aliphatic aldehyde class used extensively in perfumery. IFRA has evaluated this material and issued standards limiting its use to a maximum of 0.3% in finished consumer products due to potential for skin sensitization at higher levels. It is not restricted under EU cosmetic regulations.

Skin benefits

  • Used as fragrance component; no documented direct skin conditioning benefits

Known concerns

  • Potential skin sensitizer at high concentrations
  • IFRA use restriction (max ~0.3% in finished product)
  • Aldehyde oxidation products may cause irritation

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.