Safety Guide

Is Methylisothiazolinone Safe for Pregnancy?

Evidence-based safety information for using Methylisothiazolinone during pregnancy and breastfeeding.

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Insufficient Data

We don't have specific pregnancy safety data for Methylisothiazolinone. Consult your healthcare provider before use during pregnancy.

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 pregnancy.

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.