Bioderma Sébium Night Peel is generally considered safe to use while breastfeeding, as it contains glycolic acid (AHA), D-Panthenol, Fluidactiv, and DAF, a blend that gently exfoliates, soothes, controls oil, and improves skin texture; however, it is still essential to consult your dermatologist or healthcare provider before starting any new skincare during pregnancy or breastfeeding, as every skin type is different and may react differently during this time.