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Shampoo bars

Shampoo bar

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The oils

Oil Share
Coconut Oil 25.0 %
Olive Oil (virgin / refined / olive oil) 30.0 %
Castor Oil 15.0 %
Shea Butter 15.0 %
Avocado Oil 15.0 %

How it is made

Process Cold process
Alkali NaOH
Superfat 5 %
Water lye water at 33 %
Iodine value 61
INS 143

What the numbers say

Hardness 35 29–54
Cleansing 17 12–22
Conditioning 61 44–69
Bubbly lather 30 14–46
Creamy lather 31 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

14 variations

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

Where these proportions come from

IFRA category 9 for fragrance, as a rinse-off hair product.

Our own construction. A true soap shampoo bar is alkaline and behaves nothing like a syndet bar; an acidic rinse is part of using one.

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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