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cosmetic ingredient

Methylisothiazolinone

Pregnancy Use with caution

Is Methylisothiazolinone pregnancy-safe?

Methylisothiazolinone should be used with caution during pregnancy. A preservative and common contact allergen. Leave-on use discouraged; rinse-off is lower risk.

Breastfeeding Use with caution

Is Methylisothiazolinone breastfeeding-safe?

Methylisothiazolinone should be used with caution while breastfeeding. A preservative and common contact allergen. Leave-on use discouraged; rinse-off is lower risk.

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This information is general guidance and not a substitute for professional medical advice. Always consult your healthcare provider before using new products during pregnancy or while breastfeeding.