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