Long-Shelf-Life Bar (Anti-DOS)
Stable, low-oleic recipe with ROE and EDTA to prevent dreaded orange spots over a 1–2 year shelf life.
If you're selling at market and bars need to keep for 12+ months without rancidity (DOS — dreaded orange spots), this recipe stacks the deck. Low-oleic oils, ROE antioxidant, and tetrasodium EDTA chelator combine for a stable bar that ages well.
Ingredients (1 kg batch)
| Ingredient | Amount |
|---|---|
Olive oil Olea Europaea (Olive) Fruit Oil | 250.0 g (25%) |
Coconut oil 76° Cocos Nucifera (Coconut) Oil | 250.0 g (25%) |
Palm oil Elaeis Guineensis (Palm) Oil | 250.0 g (25%) |
Shea butter Butyrospermum Parkii (Shea) Butter | 150.0 g (15%) |
Castor oil Ricinus Communis (Castor) Seed Oil | 50.0 g (5%) |
Safflower oil (high oleic) Carthamus Tinctorius (Safflower) Seed Oil (High Oleic) | 50.0 g (5%) |
NaOH (lye) | 142.6 g (99% purity) |
Distilled water | 330.0 g |
Rosemary oleoresin extract (ROE) | 2.0 g (0.2% of oils) |
Tetrasodium EDTA | 2.0 g (0.2% of oils) |
Open the recipe in the calculator to scale up or down by gram, ounce, kg, or pound.
Expected qualities
Step-by-step
- Standard CP procedure.
- Pre-mix EDTA in a small amount of warm distilled water. Add to lye-water before combining.
- Add ROE to the warm oils before adding lye-water.
- Combine, stick-blend, fragrance, pour, unmould, cure 6 weeks.
Notes & troubleshooting
- Refined / deodorised oils have longer shelf lives than unrefined. Pay for the quality if you're aiming for long shelf life.
- Store cured bars in a cool dark place — sunlight and heat trigger DOS too.
Regulatory disclaimer
FormulaNorth helps organize cosmetic formulation, label, costing, and CNF preparation information. It is not legal or regulatory advice and does not replace Health Canada guidance, professional regulatory review, or the maker's responsibility to verify product compliance before sale.
Selling in Canada?
Soap sold to the public in Canada is generally regulated as a cosmetic. Save this recipe to a free FormulaNorth account, then use the bilingual label drafter and CNF preparation tools to get ready for sale.
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