Safety Guide

Is Methylisothiazolinone Safe for Sensitive Skin?

Evidence-based safety information for using Methylisothiazolinone for sensitive and reactive skin.

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Best to Avoid

Methylisothiazolinone is flagged as potentially problematic for sensitive skin. Consider gentler alternatives or use with extreme caution.

About Methylisothiazolinone

The preservative the American Contact Dermatitis Society named "Allergen of the Year" in 2013 — for a reason.

Evidence Rating

Key Considerations

No specific health considerations documented for this ingredient.

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See the full list of ingredients to avoid for sensitive skin.

Disclaimer: This information is for educational purposes only and is not medical advice. Always consult a qualified healthcare provider or dermatologist before making changes to your skincare routine, especially during pregnancy or if you have a medical condition.