⚠️CautionCurated
Keratin Treatment
Keratin hair treatments are a caution while breastfeeding — not because of breast milk transfer, but because many products release formaldehyde gas during application, which is a known carcinogen and respiratory irritant.
The concern with keratin treatments is inhalation of formaldehyde fumes, not topical absorption. Formaldehyde-releasing preservatives in these products decompose during the high-heat application step. Even "formaldehyde-free" products sometimes contain compounds that release formaldehyde. If you choose to proceed, ensure aggressive ventilation, wear a mask, and have the treatment done in a well-ventilated salon. Your stylist's exposure is actually the greater occupational concern.
Always confirm with your doctor or lactation consultant before making dietary changes while breastfeeding.
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