Belly button care, relatively simple, pay attention to the timely cleaning of the navel inside the dirty things. You can use a wet cotton swab or cotton ball to gently scrub the inside of your belly button to clean out the dirt every time you take a bath, that is, after the inside of your belly button has been completely soaked. Do not use dry cotton swabs or dry cotton balls to force the inside of the belly button to remove the dirt, because it may cause damage to the skin inside the belly button. If the damage is not prevented with iodine volts, it may lead to inflammatory infections inside the navel, manifesting as redness, swelling, pain, and even pus. If there is local redness, swelling and pain after the usual belly button cleaning, you can apply erythromycin ointment or oxyfloxacin gel on the surface.