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DMDM Hydantoin
DMDM Hydantion, DMDMH, 1,3-Dimethylol-5,5-dimethylhydantoin
二羥甲基二甲基乙內酰脲, DMDM 乙內醯脲
分子量:188.18 Cas No:6440-58-0
防腐劑,能耐酸性,較適合酸性配方使用[1]。DMDM 為Dimethylol Dimethyl。DMDM Hydantoin 利用釋放甲醛以製造出微生物不適應之環境,藉此達到防腐效果。

屬低度皮膚過敏危險性[2]。
[1] 張麗卿,『優質保養品選擇策略』,聯經出版社,2003/07/10。
[2] 台大醫院皮膚部,陳玄祥醫師,2005/05/06
6
2012-02-16

既然此成分屬於低度皮膚過敏危險性,那為何在安心度評分表中還亮紅燈呢?應該要很安心才對啊!

2012-04-26

因為是釋放甲醛呀!另外本身護膚品就不應該含有能引起低度皮膚過敏危險性的物質,即使是防腐劑的微量級別長期使用也是有危害的。如果用的是一個系列都添加DMDM的產品,危險性自然就成倍上升啦~

c
2012-06-11

化妝品防腐劑成分使用基準表
87年7月7日衛署藥字第87041266號公告增列
DMDM Hydantoin 0.6%
化妝品使用此類成分作為防腐劑時,其總釋出之Free Formaldehyde量,不得超過1,000 ppm

e
2012-07-13

力士多芬洗髮乳被檢出甲醛 回應稱配方未超國標
2012-07-06 15:06:00 來源: 北京晚報 暫無網友評論
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聯合利華旗下的“力士”、“多芬”洗髮乳近日被曝光檢出致癌的遊離甲醛。昨天,聯合利華通過官方微博聲明稱其洗髮水配方中從不添加甲醛,檢出的甲醛來自“DMDM乙內酰脲”,在中國及歐美標準均允許使用,該物質的含量及釋放出的遊離甲醛量均符合中國標準。
台灣“消基會”在最新發布的一則25件抗屑、止癢、生髮洗髮精功能測試中提到,化妝品中使用DMDM Hydantoin等成分作為防腐劑時,其總釋出之遊離甲醛含量不得超過1000ppm。而力士柔亮洗髮乳、Dove(多芬)去屑護理洗髮乳以及舒妃有機草本萃取洗髮乳的成分中含有DMDM Hydantoin,並檢出遊離甲醛,但釋出量均合乎當地化妝品衛生管理條例規定。
聯合利華昨天表示,其洗髮水配方中不添加甲醛,檢測產品中所釋出的遊離甲醛主要來自DMDM乙內酰脲。DMDM乙內酰脲有助於產品儲存及防止微生物汙染,力士和多芬洗髮水在歐美和中國市場均使用該成分。
聲明還表示中國市場銷售的所有力士、多芬洗髮水中DMDM乙內酰脲成分含量及釋放出的遊離甲醛量均符合中國的標準。有專家指出,生產企業有責任和義務將產品所含的有害化學物質含量在外包裝上明示,並注明是否存在健康隱患,以保障消費者的知情權。(記者楊濱)

究竟此產品能長期使用嗎?

2015-10-23

此成分會致癌!

來源出處:http://www.thb-tw.com/cht/news_detail.php?serial=52#.VimCVPkrKUm

z
2015-12-15

此成分,含有甲醇嗎

2017-01-26

https://www.naturaveda.com/pages/the-danger-of-dmdm-hydantoin-and-imidazolindinyl-urea

DMDM hydantoin is an antimicrobial agent and preservative. It increases the shelf-life of cosmetics (e.g. shampoos, skincare products, hair gels, etc) by "releasing" formaldehyde and thus killing bacteria. This keeps cosmetics sanitary, and prevents illness due to infections.

The Environmental Working Group (EWG) lists the hazard level of DMDM hydantoin at moderate/high. It is not known to cause developmental and reproductive toxicity, and has a low risk of being a carcinogen. The chemical may be a problem in people who are allergic to formaldehyde, and can increase the risk of developing a formaldehyde allergy. The most common type of allergy is a skin allergy.

As of 2005 however, the independent Cosmetic Ingredient Review panel (established in 1976) lists DMDM hydantoin as a "safe" ingredient [2]. The benefits outweigh the risks, especially at the low levels that are found in most cosmetics:

"The CIR Expert Panel has reviewed the safety of formaldehyde in cosmetics and personal care products and concluded that it was safe to a great majority of consumers but has limited the concentration to 0.2% free formaldehyde due to the skin sensitivity of some individuals to this agent. The amount of DMDM Hydantoin required to preserve a product (less than 1%) does not expose the consumer to concentrations of formaldehyde above the 0.2% limit for formaldehyde recommended by the CIR Expert Panel."

So unless someone is very sensitive to formaldehyde, this is a generally safe chemical. It is poorly absorbed by the skin, and there are no adverse effects from oral exposure [2]. Nevertheless, when finding toiletries (e.g. baby wipes, sunscreen, etc) for babies and young children, it might be a good idea to stick to preservatives that are associated with fewer complications.
https://www.quora.com/What-is-DMDM-hydantoin-Is-it-safe.

m
2017-08-20

甲醛可能令部分人士產生皮膚刺激反應,美國接觸性皮膚炎協會(ACDS)更將甲醛列為2015年的「年度致敏物質」。有研究指,較高濃度的甲醛(200至300ppm)可致皮膚炎,如有傷口、易敏感皮膚或濕疹人士更要小心。

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