The Lab
Specimen No. 0032
CautionDerivedpreservative

Potassium Sorbate

potassium sorbate · e202 · sorbic acid potassium salt

Common preservative derived from sorbic acid. One of the safer synthetic preservatives, but can cause skin sensitization — especially in leave-on products at higher concentrations.

high confidence
Researched April 18, 2026

Concerns

  • Skin sensitization and allergic contact dermatitis in susceptible individuals
  • May form genotoxic compounds in combination with ascorbic acid under some conditions [inference]
  • EU limits concentration in cosmetics

Commonly found in

Natural cosmeticsTonerSerumEye creamBaby wipes

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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