How is the beer bottle scratched red? What can I do to leave no scar in the future?

Analysis of illness: The local redness of the beer bottle after being scratched is a manifestation of local tissue inflammation caused by trauma. Usually this kind of injury doesn't leave a scar. Suggestion: I suggest you go to the hospital for examination and let the doctor have a look. Do you need further treatment? Pay attention to local hygiene and dryness, and don't get infected. Furthermore, if the wound is deep, debridement and suture are needed. Debridement and suture is the best way to prevent scar formation. Preventing infection is also very important to prevent scars.