Is Ammonium Cocoyl Isethionate Safe?
What is it?
Ammonium cocoyl isethionate is a surfactant/detergent used as a cleansing agent and to impart lather in shampoos, body washes, facial care, and toothpastes. It's the ammonium salt of the coconut fatty acid ester of isethionic acid.
What are its risks?
Ammonium cocoyl isethionate can pose skin irritation depending on the individual's susceptibility and concentration used. However, it is considered to be, generally, a milder option. (Source)
It's marketed as a safe or gentle alternative to SLS, however, it is created with ethylene oxide. Ammonium cocoyl isethionate is created by combining fatty acids with isethionic acid. Isethionic acid is created by combining sodium bisulfite in an aqueous solution and ethylene oxide. Ethylene oxide is a known carcinogen. Traces of ethylene oxide can remain in the product, along with carcinogenic 1,4-dioxane. (Source)
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