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Abrasive bars

Pumice soap I

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The oils

Oil As the source prints it Share
Palm Kernel Oil Palm Kernel or Ceylon Cocoanut Oil · 705 lb 100.0 %

Everything else

  • Pumice (powdered) — 281 lb · inert abrasive; consumes no alkali

How it is made

Process Cold process
Alkali Soda Lye, 38° B. · 378 lb · 38° Bé
Superfat Not stated
Water as the source states it
Iodine value 18
INS 224

What the numbers say

Hardness 76 above 29–54
Cleansing 66 above 12–22
Conditioning 18 below 44–69
Bubbly lather 66 above 14–46
Creamy lather 10 below 16–48

Computed from the fatty acids of the fats above. The bands are what the craft has settled on, not chemistry — a bar outside one is not wrong.

The source

E. G. Thomssen, Soap-Making Manual: A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant, D. Van Nostrand Company, 1922, p.93. Soap-Making Manual: A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant · read 2026-09-22

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