Methylisothiazolinone (MIT) is a synthetic preservative used in cosmetic products to prevent microbial growth and ensure product safety. It is commonly found in leave-on products and can cause allergies and eczema in some individuals. Due to safety concerns, its use in leave-on products has been banned in Europe since July 2016.
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MIT can induce allergies and eczema when it stays in prolonged contact with the skin, particularly in leave-on products. It can cause skin irritation, redness, swelling, and itching.
Avoid using leave-on products containing MIT, especially if you have sensitive skin or a history of allergies. Read product labels carefully and choose products that are free from MIT.
MIT is a synthetic ingredient.
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The use of MIT is limited to a concentration of 0.0015% in rinse-off products, according to the Scientific Committee on Consumer Safety (SCCS). Some countries, like Denmark, are considering a complete ban on MIT due to its potential to cause allergic reactions.