The Lab
Specimen No. 0036
CautionDerivedemollientemulsifier

Stearic Acid

stearic acid · octadecanoic acid · cetylacetic acid

A saturated fatty acid used as an emollient and emulsifier. Inherently safe, but sourcing matters — palm oil-derived stearic acid raises deforestation concerns.

high confidence
Researched April 18, 2026

Concerns

  • Sourcing concern — often palm-derived, linked to deforestation and habitat destruction
  • Comedogenic at higher concentrations
  • No toxicological concerns at cosmetic levels

Sourcing & processing

plant derived

Commonly found in

LotionCreamSoapShaving productsMakeup

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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