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Is Sodium Oleoyl Isethionate vegan?

Sodium Oleoyl Isethionate

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Sodium Oleoyl Isethionate is the sodium salt of the ester of isethionic acid and oleic acid. It is a mild anionic surfactant used in cleansing products, typically derived from plant-based oleic acid.

Also known as Sodium 2-sulphonatoethyl oleate
INCI name Sodium Oleoyl Isethionate
EC number 205-522-4
CosIng ID 37999
Last reviewed 9 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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