if you have povidine iodine or betadine give it a warm 10 minute bath to clean the area. just enough iodine to make the water look like it has something in it like 1 part to a million water. Neosporin daily would be fine(as long as it is clear, not pain plus (white)) but i dont use it because long term it can be a carcinogen. even cheaper is a triple antibiotic ointment. Silver sulfidizine would be good if you have some. Use the topical daily and the snake should correct it with one shed (pic doesnt look serious)