Injuries can occur to anyone at any moment. However, we can’t carry an entire pharmacy with us, so we are never fully prepared for emergencies. How can we determine what is good for the wound, ensure sterility, and what kind of and how much disinfectant, hemostatic agent and pain reliever are needed? Are we hindering the natural healing process, and will changing the band-aid cause further damage? In addition, it is important to note that as soon as we remove a band-aid, it becomes hazardous waste. This means it can’t be reused, recycled or thrown into the garbage, which represents a major challenge. My project offers a solution to these issues through an innovative band-aid. It is a personalized, partly absorbable bandage that can be customized for different types of injuries by adjusting its composition, size, thickness, and shape to suit the specific injury. I found that a 3D printer is the most suitable tool for this purpose, especially since it can be connected to a mobile app. The results from image analysis of photos taken with a mobile phone can guide the 3D printer to produce the correct shape and layer arrangement. My project could significantly improve the lives of patients with chronic conditions, such as diabetes, who struggle daily to treat open wounds.