CheckVegan

Is DMDM Hydantoin vegetarian?

DMDM Hydantoin

Vegetarian Vegetarian
Vegan Vegan

DMDM Hydantoin is a synthetic antimicrobial formaldehyde-releaser preservative used in cosmetics such as shampoos, conditioners, hair gels, and skin care products. It is a hydantoin derivative sold commercially under trade names such as Glydant.

Also known as 1,3-Bis(hydroxymethyl)-5,5-dimethylimidazolidine-2,4-dione, 5,5-Dimethylhydantoin, Glydant
INCI name DMDM Hydantoin
CAS number 6440-58-0
EC number 229-222-8
CosIng ID 33723
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