Immediately after circumcision, the tip of the penis is usually covered with gauze coated with petroleum jelly to keep the wound from sticking to the diaper. Gently wipe the tip clean with warm water after a diaper change, then apply petroleum jelly to the tip so it doesn't stick to the diaper. Redness or irritation of the penis should heal within a few days, but if the redness or swelling increases or if pus-filled blisters form, infection may be present and you should call your baby's doctor immediately.
Umbilical cord care in newborns is also important. Some doctors suggest swabbing the area with rubbing alcohol until the cord stump dries up and falls off, usually in 10 days to 3 weeks, but others recommend leaving the area alone. Talk to your child's doctor to see what he or she prefers. The infant's navel area shouldn't be submerged in water until the cord stump falls off and the area is healed. Until it falls off, the cord stump will change color from yellow to brown or black — this is normal. Consult your doctor if the navel area becomes reddened or if a foul odor or discharge develops.