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METHYLCINNAMIC ALDEHYDE

CAS 101-39-3
65

Safety score · 0–100

Fine

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

About

Methylcinnamic Aldehyde is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Alpha-methylcinnamaldehyde is a aromatic aldehyde used as a fragrance ingredient. It is listed on EU Annex III (List of substances which cosmetic products must not contain except subject to the restrictions laid down), with restrictions on maximum concentration. It is a known skin sensitizer (H317 — may cause allergic skin reaction) and is required to be declared on the ingredient list when present above 0.001% in leave-on products.

Known concerns

  • Skin sensitizer — may cause allergic skin reaction (H317)
  • EU Annex III restricted fragrance allergen
  • Must be declared on label if above threshold

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.