oilSource-linked SAP reference
Castor Oil
A small amount of castor oil can help create a stable, creamy lather. Its distinctive ricinoleic acid content makes it useful in blends.
Ricinus communis
How Castor Oil affects cold-process soap
Castor oil can support a stable, creamy lather in a balanced recipe. Its thick, sticky batter can become difficult to pour when castor dominates the oil blend.
Working with Castor Oil
ModerateMeasure carefully: castor oil is unusually viscous. A single-oil castor batch behaves very differently from a normal blend.
Workability is a practical guide, not a safety rating. Results depend on the whole oil blend, product grade, and process. Check the supplier’s specification before calculating sodium hydroxide; this linked SAP value is a reference, not a guarantee for every product.