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Fragrance ester

P-CRESYL ISOBUTYRATE

CAS 103-93-5
55

Safety score · 0–100

Moderate

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

A para-cresol isobutyrate ester used as a fragrance component. It is restricted by IFRA because hydrolysis can release p-cresol, raising irritation and sensitisation concerns.

Skin benefits

  • Used as a fragrance and flavour ingredient at low percentages
  • Pleasant floral-fruity odour profile permitted in IFRA framework

Known concerns

  • Hydrolyses to p-cresol, a known skin and eye irritant
  • Suspected weak skin sensitiser based on phenolic structure-activity
  • Restricted use levels under IFRA for leave-on cosmetics
  • Possible irritation on damaged or compromised skin

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

Related fragrance esters

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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.