A: Newborns will have their very first bath shortly after birth, but if you deliver at a hospital, the nurses at the hospital will do it for you. Once you get home, sponge bathing is the way to go until your baby's umbilical cord falls off. You can do this once every few days. When the cord falls off (at around 2-4 weeks), you can fully immerse your baby in an infant tub. It's pretty easy, and most babies love it. Just keep the soap out her eyes and you will be fine.