The Lab
Specimen No. 0149
ClearedNaturalemollient

Castor Oil (Ricinus Communis)

ricinus communis seed oil · castor oil · castor seed oil

A plant-derived oil from castor beans used extensively in lip and hair care. The CIR confirmed it is not a significant skin irritant, sensitizer, or photosensitizer. Well-tolerated with a long history of safe use; the main functional benefit is its high viscosity and excellent film-forming properties.

high confidence
Researched April 18, 2026

Concerns

  • Rare allergic reactions in individuals with castor bean sensitivity (uncommon)

Sourcing & processing

plant derivednaturally sourced

Commonly found in

LipstickLip balmLip glossHair conditionerEyebrow products

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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