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