This botanical profile is part of the Star Naturals Herbal Library.
Castor Oil
Ricinus communis
Historical / Folk Use
Castor oil has been used across Egyptian, Mediterranean, African, and Ayurvedic herbal traditions for centuries. Pressed from the seeds of the castor plant, it was valued in topical preparations for its rich texture and ability to support skin and hair conditioning. Its dense, emollient nature made it ideal for nourishing, protective, and restorative blends.
Energetics
Traditionally described as:
• Heavy, rich, and fortifying
• Deeply hydrating
• Protective and sealing
• Softening and smoothing
• Restorative to surface
• Strengthening in tone
Research & Resources
The research summaries below highlight findings from scientific studies on compounds found in this botanical.
They are provided for educational purposes and do not represent claims about the effects of Star Naturals products.
Study 1:
An exploratory human study observed that a castor oil cream used around the eyes was associated with reductions in measured pigmentation and improvements in certain appearance scores over 2 months.
Study 2:
Castor oil contains fatty acids that are associated with moisturizing and skin-conditioning effects; some biochemical properties have been reported to be anti-inflammatory or antimicrobial.
Study 3:
A double-blind randomized clinical trial evaluated topical formulations containing rosemary-lavender oil, rosemary-castor oil, and coconut oil over a 90-day period. Formulations containing rosemary with castor oil were associated with measured changes in hair thickness, density, and length compared with coconut oil.