dmdm

Ingredients: Deionized Water, Propanediol, Acrylic Acid Polymer, N-Hexadecyltrimethylammonium Chloride, Pawpaw Extract, Melarrest l, DMDM Hydantoin, Essence.

产品成分：去离子水、丙二醇、丙烯酸聚合物、西曲氯铵、木瓜提取液、甘草提取液、DMDM乙内酰脲、香料。

Ingredients: Deionized Water, Propylene Glycol, Acrylic Acid Copolymer, N-Hexadecyltrimethylammonium Chloride, Papaya Extract, Alga Extract, DMDM Hydantoin, Essence.

产品成份：去离子水、丙二醇、丙烯酸聚合物、西曲氯铵、木瓜提取液、海藻提取液、DMDM乙内酰脲、香料。

This paper use DMDM Hydantoin and Imidazolidinyl Urea as two examples, describe the characteristic of these preservatives, and the difficulties in determination of these preservatives in cosmetic.

本文以DMDM乙内酰脲和咪唑烷基脲为例，简述了此类防腐剂的性质特点及检测化妆品中此类防腐剂含量的困难。