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Benzyl alcohol (7)

CAS 100-51-6
65

Safety score · 0–100

Fine

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

About

A common fragrance component and preservative that also functions as a solvent; restricted to 1% in leave-on EU cosmetics and requires allergen labeling.

Benzyl Alcohol (CAS 100-51-6) is listed in EU Cosmetic Regulation Annex III with entry 37, which restricts its maximum concentration to 1% in ready-to-use ready-to-use cosmetic products (excluding oral care and hair spray). It is widely used as a fragrance component, preservative, and solvent in cosmetic formulations. The SCCS has confirmed that 1% limit is safe for skin tolerance in the general population, but above this concentration it can cause irritation. Benzyl alcohol also appears on the EU fragrance allergen declaration list. The existing EU restriction reflects concerns around respiratory irritation and sensitization at higher concentrations.

Skin benefits

  • Effective preservation of water-based cosmetic formulations
  • Serves as a solvent for cosmetic actives
  • Provides mild antimicrobial activity

Known concerns

  • EU Annex III restricted to 1% max in leave-on cosmetics
  • Fragrance allergen declaration required above threshold
  • May cause skin and eye irritation at elevated concentrations
  • GHS H302 (harmful if swallowed)

References

EU

EU CosIng database

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

Related others

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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.