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INCI: METHYLISOTHIAZOLINONE (AND) METHYLCHLOROISOTHIAZOLINONE
Methylisothiazolinone (and) Methylchloroisothiazolinone is a powerful preservative blend commonly used in rinse-off cosmetic products to prevent microbial growth.
No specific concern data available
Safety summary
Known to be a sensitizer, particularly in leave-on products, and its use is restricted in many regions due to potential for allergic reactions.
1% line marker
This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.