← Home

Is Potassium Hydroxide vegan?

Potassium Hydroxide

Vegan

Potassium hydroxide, also known as caustic potash, is a strong inorganic base produced commercially by the electrolysis of potassium chloride solution. It is widely used in cosmetics as a pH adjuster and to saponify fats and oils.

Also known as Caustic Potash, KOH, Lye, Potassium Lye
E number E525
CAS number 1310-58-3
EC number 215-181-3
Last reviewed 16 April 2026

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.