The time it takes for scar hyperpigmentation to fade varies depending on the person and the area, and can range from a few months to a few years. In general, the darker the skin, the more likely the hyperpigmentation is to occur and the slower the recovery; exposed areas of the skin are slower to fade than non-exposed areas. The exact mechanism of hyperpigmentation formation is not yet fully understood, and is mainly related to the movement of melanocytes during inflammation and increased production of pigment. Scarring is a response of the body to repair the wound after inflammatory reactions to various traumas, and can be accompanied by the formation of hyperpigmentation during the process of formation. To make the hyperpigmentation subside, the organism proceeds in two ways: one is to reduce the source of hyperpigmentation, i.e., to reduce melanin formation, and the other is to accelerate the subsidence of melanin. Under normal circumstances, after the inflammatory reaction subsides, melanin formation will generally be reduced, of course, at this time if there is sun exposure, or will increase the formation of melanin; on the other hand, the body’s macrophages will come over to phagocytosis of melanin particles, so that hyperpigmentation will subside, but this process is relatively long and varies from person to person, and may last for a few months to a few years. Therefore, for scar hyperpigmentation, in order to let it fade as soon as possible, we should pay attention to strict sun protection and avoid stimulation; at the same time, we can actively go to the intervention, such as the use of topical medication and laser treatment, but these should be carried out under the guidance of dermatologists.