Question #179390

How is the chemical DMDM hydantoin reacting to cause problems


Expert's answer

Formaldehyde. Shampoos containing preservatives that release formaldehyde such as quaternium-15, diazolidinyl urea, DMDM hydantoin, bronopol, or imidazolidinyl urea can be severely damaging because they can release formaldehyde into the air you breath and into your skin, warns Cates.


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