Synonym(s)
1,3-Bis(hydroxymethyl)-5,5-dimethylimidazolidine-2,4-dione; CAS number: 6440-58-0; imethyloldimethylhydantoin
DefinitionThis section has been translated automatically.
DMDM hydantoin, the dimethyloldimethylhydantoin, is an organic compound from the group of substances known as hydantoins, which is used in cosmetic formulations as a preservative (inhibits the development of microorganisms in cosmetic products and preserves them).
Note(s)This section has been translated automatically.
DMDM hydantoin is a formaldehyde donor. In equilibrium with hydantoin - up to 2% free formaldehyde is split off. Via this "formaldehyde effect", hydantoin has an antimycotic and antibacterial effect (effective against gram-positive and gram-negative bacteria).
The general conditions for preservatives which may be used in cosmetics are laid down in the EC Cosmetics Regulation (1223/2009) Annex V.
Contact allergic reactions are to be expected in case of formaldehyde sensitization.
Prof. Dr. med. Peter Altmeyer