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Traditional

Savon de Marseille, 72 %

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The oils

Oil Share
Olive Oil (virgin / refined / olive oil) 72.0 %
Coconut Oil 14.0 %
Palm Oil 14.0 %

How it is made

Process Cold process
Alkali NaOH
Superfat 3 %
Water lye water at 33 %
Iodine value 69
INS 131

What the numbers say

Hardness 30 29–54
Cleansing 10 below 12–22
Conditioning 67 44–69
Bubbly lather 10 below 14–46
Creamy lather 20 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.

Try it differently

20 variations

The same soap with one thing moved. Each opens in the calculator ready to change again.

Where these proportions come from

The historical article is boiled, salted out and cured for months. A cold-process bar at these proportions is a homage, not the same soap.

The stamped "72 % extra pur" is the fatty-matter content of the finished bar, not an oil proportion; the vegetable-oil composition here is the common modern cold-process reading of it.

A canonical formulation: the proportions the craft has settled on for this kind of soap. Not transcribed from a document, and not copied from anywhere.

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