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Background
In 2005, methylisothiazolinone (MI) was allowed as a stand‐alone preservative in cosmetics. This resulted in an epidemic of allergic contact dermatitis to MI, mainly affecting women exposed to leave‐on cosmetics. Consequently, a regulation of Annex V in the European Union in 2017 banned the use of MI in leave‐on cosmetics and reduced the allowed concentration in rinse‐off products.
Objective...
BackgroundIn view of the current and unprecedented increase in contact allergy to methylisothiazolinone (MI), we characterized and evaluated two recent epidemics of contact allergy to preservatives used in cosmetic products to address failures in risk assessment and risk management.
ObjectiveTo evaluate temporal trends of preservative contact allergy.
MethodsThe study population included consecutive...
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