1-Methylhydantoin-2-Imide vs Imidazolidinyl Urea
1-Methylhydantoin-2-Imide and Imidazolidinyl Urea are both keeps the product fresh ingredients. 1-Methylhydantoin-2-Imide is found in 8 products while Imidazolidinyl Urea appears in 11, making Imidazolidinyl Urea the more widely used option.
1-Methylhydantoin-2-Imide
Keeps the product fresh
Imidazolidinyl Urea
Formaldehyde-releasing preservative