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5-METHYL-BETA-IONONE

CAS 79-70-9
80

Safety score · 0–100

Good

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

5-methyl-beta-ionone is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

This beta-ionone variant is a naturally occurring sesquiterpene ketone used extensively in fragrance compositions. Under EU cosmetics law it is unrestricted, though IFRA guidelines recommend concentration limits in leave-on products. It appears on the IFRA transparency list and is considered safe for cosmetic use when formulated within recommended limits.

Known concerns

  • Potential for skin sensitization at high use levels
  • IFRA restriction applies to certain product types

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.