Depending on where you are (country etc), another good option is Vetericyn antiseptic ointment designed for reptile use: it's water-based, so it won't mess up future sheds if you use much, as can happen with ointments made for human use, such as Neosporin, which is petroleum jelly (aka 'vaseline') based, which DOES mess with reptile skin. Diluted Betadine (povidone-iodine) is another option that is safe for snake use.