⚠️CautionCurated
Teeth Whitening
Teeth whitening products — including at-home strips and professional treatments — use hydrogen peroxide or carbamide peroxide. While there's no direct evidence of harm to nursing infants, most dentists recommend waiting until after breastfeeding simply because safety data is lacking and it's an elective procedure.
The hydrogen peroxide used in teeth whitening is in contact with oral mucosa and small amounts could be swallowed. Transfer to breast milk is not well-studied. Professional treatments use higher concentrations (up to 40%) than at-home strips (3–10%). Given it's cosmetic, most providers recommend waiting. If you want to brighten your smile now, whitening toothpastes are a safer option.
Always confirm with your doctor or lactation consultant before making dietary changes while breastfeeding.
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