Methylisothiazolinone
甲基异噻唑啉酮
Also known as: MIT, MI
What it does
- Strong antimicrobial preservative
Evidence
Strong evidenceBanned in EU leave-on products since 2016 due to sensitization risk. Allowed in rinse-off at ≤15ppm.
Skin types
Use with caution: Sensitive Eczema All
High allergen risk. One of the most common contact allergens.
Irritation potential
High
Comedogenic rating
0 / 5
Pregnancy
Generally considered safe during pregnancy
No specific pregnancy concerns, but high sensitization risk for everyone.
Good to know
Avoid in leave-on products. Named Allergen of the Year 2013 by ACDS.
Related ingredients
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Analyze a productEducational information only — not medical advice. Always patch test and consult a dermatologist for skin concerns.