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Is formaldehyde hair treatment safe during pregnancy?

Best avoided

Avoid formaldehyde and formaldehyde-releasers

Formaldehyde is a known toxicant; formaldehyde-releasing preservatives (DMDM hydantoin, quaternium-15) and hair-smoothing treatments expose you to it. Avoid in pregnancy.

Safer options: formaldehyde-free ('formaldehyde releaser'-free) products

Why this result?Strong source

Based on: A BumpBites curated pregnancy rule

Confidence: Medium

  • Formaldehyde is a known toxicant; formaldehyde-releasing preservatives (DMDM hydantoin, quaternium-15) and hair-smoothing treatments expose you to it. Avoid in pregnancy.

CDC/NIOSH — formaldehyde; EU cosmetics restrictions

Automated result — not individually reviewed by a clinician.

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Informational only — not medical advice. Guidance can vary by trimester and individual health; confirm with your provider.

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