Cosmetic needle sutures use cosmetic threads, which have a stable molecular structure, a smooth surface, and little tissue reaction, so damage to the skin can be minimized and no scarring of the thread holes can be formed. However, cosmetic needle sutures still leave a small scar. When human skin is traumatized, as long as the incision is deep to the dermis or the whole skin layer, no matter what kind of suture is used, it will leave a scar, but with cosmetic needle suture, it can make the scar smaller, lighter in color, as fine, white and flat as possible. In addition, the problem of scarring after suturing is related to many factors, such as whether the wound is neat, whether it is co-infected and whether the patient is a keloid. Usually, after the cosmetic stitches are performed, in order to make the scar as small and faint as possible, it is necessary to keep the wound clean and hygienic and cooperate with the doctor for anti-inflammatory and other treatments to prevent infection. Secondly, pay attention to a light diet, avoid spicy and stimulating diet and seafood, etc. If there are obvious scars, you can go to a regular aesthetic department for scar removal treatment after the wound is completely healed. In addition, scar patches can also be used. Applying scar patches after the cosmetic stitches can reduce scar formation or make the scar color closer to the surrounding skin.