Other
CIS-NON-2-ENAL
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Cis-Non-2-Enal is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.
Cis-non-2-enal is an alpha,beta-unsaturated aldehyde belonging to the class of norsniff compounds identified as potent odorants in several natural sources. Unsaturated aldehydes in this molecular weight range are recognized fragrance allergens and irritants, requiring IFRA restrictions. The compound is structurally similar to trans,trans-2,6-nonenal ('ozone' odorant) and should be used at very low concentrations. EU Annex III may require declaration on product labels if present above threshold.
Skin benefits
- Fragrance material providing distinctive green notes
Known concerns
- Skin irritant
- Potential skin sensitizer
- IFRA restrictions apply due to irritancy profile
- Alpha,beta-unsaturated aldehyde — alerts for sensitisation
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related others
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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.