CheckVegan

Is Quaternium-18 vegetarian?

Quaternium-18

Quaternium-18 is a quaternary ammonium compound derived from hydrogenated tallow (animal fat), used as a conditioning agent and emulsifier in cosmetics and hair care products.

Also known as Bis(Hydrogenated Tallow Alkyl) Dimethyl Ammonium Chloride
INCI name Quaternium-18
CAS number 61789-80-8
EC number 263-090-2
CosIng ID 37408
Last reviewed 4 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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.

Report an issue