Soy Wax has a saponification (SAP) value of 0.137 for NaOH (bar soap) and 0.192 for KOH (liquid soap). It's typically used at 5-20% of the oils.
How much lye for Soy Wax?
Lye at 0% superfat = oil weight × SAP. Apply your superfat to reduce it (e.g. ×0.95 for 5%).
| Soy Wax | NaOH (0% SF) | NaOH (5% SF) | KOH (0% SF) |
|---|---|---|---|
| 100 g | 13.7 g | 13 g | 19.2 g |
| 250 g | 34.3 g | 32.5 g | 48 g |
| 500 g | 68.5 g | 65.1 g | 96 g |
What Soy Wax does in soap
| Property | Value |
|---|---|
| Hardness | 0 |
| Cleansing | 0 |
| Conditioning | 0 |
| Bubbly lather | 0 |
| Creamy lather | 0 |
| Longevity | 0 |
Values are the oil's solo contribution (SoapCalc-style property model). Real bars blend several oils — build the full recipe to see the combined profile.
Build a recipe with Soy Wax in SoapCalc — it computes the exact lye for your oils at any superfat and saves the recipe. See all soap-making oils or the SAP value chart.