When the abnormal process of trauma repair occurs, a large amount of extracellular matrix components, mainly collagen, are deposited, excessive proliferation of dermal tissue occurs, and pathological scars appear, which is called hyperplastic scars. Proliferative scars are generally manifested as protruding from the skin surface, irregular in shape, red or dark red in color, and accompanied by itching and pain. So how do you prevent scar hyperplasia after an injury? Pressure blocking hyperplasia Usually wounds that take more than two weeks to heal from an injury are likely to produce hyperplastic scars. At this time, you can prevent scar hyperplasia by wearing compression with elastic garments and elastic sleeves to compress the incision or scar for a long period of time, so that the local tissue within the ischemia and hypoxia, scar tissue capillary embolism, reduce the nutrients of the scar. Reduce the tension of the wound Tension is an important factor in the formation of proliferative scars, and it is important to reduce activities and avoid pulling the incision with force when the wound is healing. Also, if the wound is deep, a combination of incision no-sew tape can be applied to pull the tissues around the wound together to reduce the tension of the incision and reduce scar formation. Ensure normal healing of the wound Normal healing of the wound is a prerequisite for reducing scars, which can reduce the generation of granulation tissue within the wound site, shorten the time of scar formation, and make the formed scars more normal. On the contrary, abnormal healing due to infection, splitting or poor healing of the wound will prolong the healing time and make the scar more likely to grow. Topical application of anti-scar medication Topical anti-scar medication has a certain effect of fading scars or reducing scar formation. Generally, there are scar removal creams and silicone patches, which are silicone gels in nature, and are applied externally or topically to wounds to provide a closed and moist environment to reduce scar proliferation.