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Botanical Brief No. 52: Castor Oil

Updated: Jan 12

ROOTED WISDOM


Rooted Wisdom: Castor Oil, Ricinus Communis

Botanical Brief No. 52


  • Castor oil’s use stretches back to ancient Egypt, where it was used for medicinal poultices and cosmetics.

  • It’s a unique oil, rich in ricinoleic acid, which gives it a thick, viscous, glossier feel.

  • Very occlusive ; locks in moisture and forms a barrier. 

  • Anti-inflammatory, antibacterial and gentle. Helps with minor skin irritations, cracked skin, and chapped surfaces.

  • In hair: supports eyebrow & eyelash strengthening, scalp soothing, and split-end sealing (in small amounts).

  • Often blended in small percentages to boost viscosity and barrier performance.

  • Thick texture means it can feel heavy or sticky if overused. Typically used in blends, not alone on face.

  • Because it's occlusive, in acne-prone skin overuse can trap sebum and congestion. Use strategically (spot, at night).

  • For eyelash use, avoid contact with eyes.

  • If using cold-pressed or unrefined castor, ensure purity (no contaminants).


Castor oil brings weight, grip, and lasting comfort to the skin, sealing in moisture and lending formulas a distinctive richness. Used judiciously, it anchors a blend, supports barrier integrity, and leaves the complexion supple, polished, and quietly resilient.

2024 Petal & Root™

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