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Po

Potassium Hydroxide

Potassium Hydroxide

A strong base used in trace amounts to adjust pH — and, in some cleansers, to turn oils into a gentle soap.

What it does

Potassium hydroxide is a pH adjuster much like sodium hydroxide. In most products it appears in tiny, already-neutralized amounts to set the right pH. In certain cleansers it reacts with fatty acids to form a mild liquid soap. Seeing it on a label is normal and not a concern on its own.

Also known as

koh, potassium hydrate

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