Scars are an inevitable product of the body’s trauma repair process, and in a broad sense, without scars there would be no healing of trauma. The main component of scar tissue is fibrin. The production and deposition of collagen in scar tissue increases the strength of the wound and is beneficial in a general sense. Conversely, if scars form excessively, they can cause serious form or functionally important problems. 1, Instead of treating scars, it is better to prevent them from developing. 2.The more severe the trauma, the stronger the inflammatory response, and the more significant the scar formation in the future, such as after a burn, or after a severe limb crush injury. 3.After trauma, if the wound is repeatedly infected and inflamed, the scar will be more obvious after healing. 4.Wounds after surgery should be less active, otherwise it will affect the wound healing and stimulate scarring. 5.The younger the skin, the more elastic and tense it is, so the scars produced are thicker, redder, harder, and fade more slowly, while the older people, due to the opposite condition and loose epidermal tension, the scars produced are less obvious. 6.After surgery, the wound must be well taken care of and the stitches removed at the right time. Avoid sun exposure and the use of cosmetics or maintenance products to reduce pigmentation and stimulate scarring. 7.To avoid undesirable scars, the post-surgical wound must be properly massaged with pressure or with compressive adhesives (such as the most widely used paper tape, or silicone film), but not with excessive force, which may cause the wound to crack. 8.The actual effect of the commercially available advertisements – scar removal creams or secret herbal remedies – is still to be proved by clinical medicine, so please be careful! 9.Scars are the products left behind after the healing of wounds caused by trauma or surgery, which will always exist on the skin and are difficult to be removed by external force. Through scar treatment, uneven or large scars can be beautified into small, bland and not easily visible scars, which can be completely removed if the correct method is used. 10.The correct term for scar treatment should be “scar repair” and “scar removal”.