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Figure 3: The hypertrophic scarring healing result. A hypertrophic scar possesses several surface characteristics that distinguish it from normal scar formation. There are several initiating factors participate the process. Due to a slow and prolonged regression phase, excessive type III collagens excreted from fibroblasts are accumulated in a direction parallel to epidermal surface. The evolution of myofibroblast from fibroblast may cause wound retraction in the future.