Lye
Sodium Hydroxide
Strong base used to raise pH and saponify oils in soap making.
Last reviewed April 27, 2026 · Always verify against the current Health Canada Cosmetic Ingredient Hotlist before use.
Health Canada Hotlist — Restricted
Permitted in cosmetics only when fully reacted (saponified) in the finished product. No free sodium hydroxide. In soap, this means the formula must be fully cured with no excess lye. pH adjuster use also permitted when neutralised in the finished product.
Product type restriction: Both types
Canadian suppliers
Pricing is for reference. Always confirm current price, lead time, and Certificate of Analysis directly with the supplier.
| Supplier | Location | Price/kg | Min Order |
|---|---|---|---|
| New Directions Aromatics | Mississauga, Ontario | $6 CAD | 1 kg |
| Voyageur Soap & Candle Company | Surrey, British Columbia | $8 CAD | 0.5 kg |
| Saffire Blue | Woodstock, Ontario | $7 CAD | 0.5 kg |
| Windy Point Soap Making Supplies | Calgary, Alberta | $7.5 CAD | 0.5 kg |
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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.