The scar patch is suitable for the treatment of healed keloid scars, such as proliferative keloid scars, keloids, etc., left on any part of the body after surgery or car accidents, burns and cuts. It can form a physical barrier between the scar and the external environment, which has the ability to keep the scar moist and clean, thus helping the overall condition of the scar to improve, rather the area is reduced, the color is diminished, and a therapeutic effect is achieved. It can also be used in combination with other scar treatments to significantly enhance the healing effect. The scar patch is generally soft and flat, clear in color, yet comfortable and durable. Each patch can be used repeatedly for 10-28 days, day and night.