Black Castor Oil vs. Castor Oil: Key Differences

What Is Castor Oil?

Castor oil is a thick, viscous oil rich in ricinoleic acid, a fatty acid with anti-inflammatory, antimicrobial, and moisturizing properties. Traditionally, it has been used as a laxative, skincare remedy, and hair treatment. Modern applications span cosmetics, pharmaceuticals, and industrial products. However, variations in processing methods yield two primary types:

1. Regular Castor Oil
• Extracted by cold-pressing raw castor beans without heat or chemicals.
• Light yellow in color, with a smooth texture and neutral pH (~4.5–5.5).
• Lacks ash or roasted residues.
2. Black Castor Oil (BCO)
• Made by roasting castor beans before pressing, which darkens the oil.
• Often includes ash (from burnt bean shells or wood) during extraction, raising its pH to ~8–9.
• Thicker, amber-to-dark-brown color, with a distinct smoky aroma.