Polyoxymethylene urea is a chemical compound, a polymer with a variable molecular weight. It is a product of the reaction between urea and formaldehyde.

Chemical name Methenamine 3-chloroallylochloride

Safety
Andersen, F. A. (1995). Final report on the safety assessment of polyoxymethylene urea. Journal of the American College of Toxicology, 14(3), 204-220.

What it is used for and where
Cosmetics
Bulking agent. It regulates the water content, dilutes other solids, can increase the volume of a product for better flow, acts as a buffer against organic acids, helps to keep the pH of the mixture within a certain level.
Synonyms: EC number 271-898-1

CAS: 68611-64-3 9011-05-6