oilSource-linked SAP reference

Evening Primrose Oil

A delicate liquid oil best used fresh and in a considered blend.

Oenothera biennis oil

How Evening Primrose Oil affects cold-process soap

A delicate liquid seed oil suited to specialty blends. It contributes a softer feel rather than the firmness and fluffy lather of hard oils.

Working with Evening Primrose Oil

Challenging

Check freshness and storage history, and verify the exact supplier specification before using its reference SAP.

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.

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