DermTV tells us how to heal abrasions and cuts using antibiotic ointment. To heal abrasions and cuts: Put antibiotic ointments like Bacitracin ointment and Polysporin ointment in abrasions and cuts. Put Bacitracin ointment or Polysporin ointment every 3 - 4 hours and cover with a band-aid. Why use Bacitracin ointment and Polysporin ointment? Bacitracin ointment and Polysporin ointment keep the whole environment of your abrasions and cuts moist. And once you've put antibiotic on your cut then the antibiotic protects your cut from getting infected. The band-aid is there to keep the ointment on your cut and to keep it off from your clothes.