The Lab
Specimen No. 0031
CautionSyntheticpreservativesolvent

Benzyl Alcohol

benzyl alcohol · phenylmethanol · alpha-hydroxytoluene

Naturally occurring (in some botanicals) and also synthetically produced preservative and solvent. Safe at cosmetic concentrations for most adults, but not for newborns.

high confidence
Researched April 18, 2026

Concerns

  • Linked to gasping syndrome in neonates at high IV doses (benzyl alcohol-preserved saline)
  • Skin sensitizer in some individuals
  • Contact allergy more common in people with pre-existing eczema
  • EU fragrance allergen — must be disclosed above 0.001% in leave-on products

Sourcing & processing

naturally sourced

Commonly found in

MoisturizerSerumHair careBaby products (avoid)Fragrance

Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.

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