Duck Fat
Renders to a creamy soapmaking fat. Nice lather and conditioning — similar to lard.
INCI: ANAS DOMESTICUS FAT
Animal FatsPalm-Free
Expert-reviewedPublished Mar 2026Updated Mar 2026
SAP (NaOH)
0.1380
SAP (KOH)
0.1940
Recommended Max
100%
Comedogenic
?/5
Cost Tier
Budget
Duck Fat (ANAS DOMESTICUS FAT) is a soap-making fat used in handmade soap recipes. Its SAP values are 0.1380 for NaOH and 0.1940 for KOH, which helps dial in accurate lye amounts.
Typical usage stays below 100% of total oils. In practice, it is beginner-friendly in balanced formulas, palm-free, usually easy to source at budget-friendly pricing.
Duck Fat has an NaOH SAP value of 0.13800 and a KOH SAP value of 0.19400, meaning approximately 138g of sodium hydroxide saponifies 1kg of this oil. It is typically used at 0–100.00% of total oil weight in cold process soap recipes.
Fatty Acid Profile
Palmitic (25.0%)
Stearic (6.0%)
Oleic (50.0%)
Linoleic (13.0%)
Linolenic (1.0%)
Soap Qualities Contributed
Hardness
31(29–54)
Cleansing
0(12–22)
Conditioning
64(44–69)
Bubbly Lather
0(14–46)
Creamy Lather
31(16–48)
Longevity
31(5–35)
Shaded areas show the ideal range for balanced soap. Values outside these ranges may still produce good soap depending on the overall formula.
Formulation Guidance
Recommended range:0% — 100%
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Recipes using Duck Fat
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