Generally, customers who buy band-aids are nothing more than these three categories: for bandaging small wounds, for family spares, and for new shoes grinding feet.
But there are also many customers who do not clearly understand the "minor wound". For example, when I met a construction worker, I had to buy a band-aid when I entered the door. When I saw a 5-6 cm wound on my arm, the wound was deep and bleeding, and it should have been cut at work. Due to the larger wound, the clerk suggested that customers go to the community hospital to clean and dress the wound.