Imidazolidinyl Urea is a one of the most controversial cosmetic ingredient, because people thought that being a formaldehyde releaser, Imidazolidinyl Urea does not good to human body and skin. However, every coin has two sides.
Imidazolidinyl Urea is an antimicrobial preservative available as a free-flowing higgroscopic powder. It is active against a wide range of gram-positive and Gram-negative bacteria, yeast and molds. It is stable over a wide range of pH values and is compatible with surfactants and protein derivatives, so it is recommended for liquid and powder composite products. In addition, it is often used with Araben because they work well together.