5-HEXEN-2-ONE

55

Moderate

CAS Number: 109-49-9

About 5-HEXEN-2-ONE

5-HEXEN-2-ONE is a cosmetic ingredient used in product formulation. Exercise caution due to limited available safety data.

Detailed Analysis

5-Hexen-2-one is an alpha,beta-unsaturated ketone with green, fruity odor characteristics used in fragrance compositions. Like other unsaturated ketones, it has some sensitization potential and is subject to IFRA guidelines. It is not listed in EU cosmetic regulation Annexes II or III. Use concentrations in finished cosmetic products are typically very low.

Known Concerns

  • ⚠ Skin sensitization potential (alpha,beta-unsaturated ketone)
  • ⚠ IFRA guideline applies

Safety Score

55

Moderate

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

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EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.