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Fragrance

ISOPROPYL-P-CRESOL

CAS 4427-56-9
58

Safety score · 0–100

Moderate

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

A substituted phenol (isopropyl cresol) used as a fragrance/antioxidant at trace levels. Phenolic class is mildly irritating; safe at fragrance ppm but not at higher concentrations.

Function

PERFUMING

Skin benefits

  • Phenolic fragrance/antioxidant ingredient
  • Used at trace fragrance levels
  • Provides herbaceous thymol-type odor

Known concerns

  • Phenols generally irritating to skin and mucous membranes
  • Antimicrobial phenols can disrupt skin microbiome at higher %
  • Limited cosmetic-specific safety data

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.