In the case of skin abrasion: The first step is to put it under water or relatively clean water and rinse it quickly, so that it is very clean and does not leave any dirty substances or foreign bodies. The second step is to use a cotton swab containing PVP-I to apply pressure, which can stop the bleeding on the one hand and act as a disinfectant on the other hand, which is more powerful. When the bleeding is obviously stopped and no more blood is seeping, and the wound is clean, you can consider using an oily antibacterial ointment, such as penicillin ointment, or even a kind of ointment called Bactroban, which is mupirocin ointment, and apply it to the wound, or you can bandage it again or not, for a few days at the beginning of a short period of time, you can try not to touch the water, the wound will easily grow well, and it will not leave or leave a scar. The wound will be easily healed and will leave no or less scars and will not be easily infected.