Is diazolidinyl urea vegan?

Diazolidinyl urea is an antimicrobial preservative used to prevent bacterial and fungal growth in perishable formulations. It is produced through the chemical reaction between allantoin and formaldehyde under alkaline conditions. Allantoin, a key starting material in this synthesis, can be obtained from plant sources such as comfrey root, synthesized from mineral precursors, or extracted from animal tissues and fluids. This ingredient is found primarily in personal care items, cosmetics, lotions, and occasionally in topical preparations or adhesives associated with food packaging.

diazolidinyl urea is possibly vegan because its raw materials can originate from either plant or animal sources, and labels typically do not identify which was used. The plant-derived version relies on botanical or non-animal synthetic allantoin, whereas the animal-derived version utilizes allantoin extracted from animal sources. Because product packaging does not disclose this manufacturing history, the origin cannot be determined from the ingredient statement alone. Looking for a third-party vegan certification or contacting the manufacturer directly is the only way to confirm whether the ingredient in a specific product is vegan.