1-Methylhydantoin-2-Imide vs Isobutylparaben
1-Methylhydantoin-2-Imide and Isobutylparaben are both keeps the product fresh ingredients. 1-Methylhydantoin-2-Imide is found in 8 products while Isobutylparaben appears in 7, making 1-Methylhydantoin-2-Imide the more widely used option.
1-Methylhydantoin-2-Imide
Keeps the product fresh
Isobutylparaben
Paraben preservative