Skin product advertised as “soap-free” but it contains NaOH.

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How is it soap-free if it contains an alkaline agent?

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Anonymous 0 Comments

Because while NaOH is used to manufacture soap, it itself is not soap. Sodium hydroxide functions as a strong base, the purpose of which is to cause a chemical reaction necessary in making soap (literally this reactions is called saponification, because soap). Sodium Hydroxide has many, many other chemistry purposes beyond saponification reactions.

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