The difference between the posting of reduction and Mepilex (mainly silicone) lies in the scope of application, mechanism of action and duration of use. 1. Scope of application: the former is mainly used for aligning wounds and for perioperative localized reduction treatment. The active ingredient of the latter is silicone gel, which can be used in the proliferative stage of keloid and keloid, and can also be used to prevent the formation of proliferative keloid and keloid. 2. Mechanism of action: the former is to reduce the probability of keloid scarring in later stages by reducing the tension of the skin on both sides of the wound. The latter mechanism is water retention, the material silicone can block the evaporation of water vapor on the surface of the scar, play a role similar to the role of the skin stratum corneum, through the reduction of water permeability, inhibition of capillary proliferation, reduce collagen deposition, to achieve the purpose of controlling keloid scar proliferation. 3. Use time: the former can generally be fixed to maintain tension for 1~2 days. A single sheet of the latter can be reused for several days. If you need to use the above products due to trauma or surgery, it is recommended to use them under the guidance of a specialist.