When many friends come to me for consultation, one of the questions I often ask is, how long have you had this scar? Many friends do not understand, scars are scars, why is there a relationship with time? Actually, scars that are more than a year old are generally referred to as old scars. Most of them are caused by external skin trauma, such as burns, scalds, scratches, surgeries and so on. Old scars are no longer suitable for anti-scar care or early scar treatments. Obsolete scars already belong to the stabilization stage of scars. Treatment methods can generally be categorized as follows. 1, excision of scars after ultra-decrease fine suture; suitable for skin tension is sufficient, and the area of 3-5cm small scars or deeper scars, also suitable for the length of the area of larger scars, excision of depressed or raised, according to the situation of the choice of internal and external ultra-decrease fine suture, to play the purpose of the reduction of the tension, the removal of stitches need to be done in accordance with the doctor’s orders to do a good job of reduction of the tension, the application of drugs to remove scars and other routine care can be. After removal of the affected area after recovery is a very thin line, normal social distance is not obvious. 2, soft tissue expander expansion of normal skin after repairing scars; this method is generally used for wider scars, placed in the affected area of the tissue expander, 2-3 months later, surgical treatment, with the new expansion of healthy skin to cover the scars, together with the ultra-decrease fine suture, plus laser-assisted treatment, recovery effect is good, and patient satisfaction is high. 3, intra-scar drug injection; this method is suitable for scar hyperplasia, scars, and scars, and pain and itching symptoms are obvious, or the patient’s appearance of the recovery requirements are not high, the general injection of drugs can quickly relieve the pain and itching and other uncomfortable symptoms, you can soften the affected area, so that the scar becomes flat. 4.Topical medicine spray, coating and other methods, can improve the appearance: this method is suitable for the affected area is not obvious, the appearance of the scar is not very serious damage, adhere to the application, basically can restore the appearance. More and more people have just been traumatized when they began to pay attention to anti-scar care, obsolete scars in fact there are ways to treat and improve. As long as you choose the right method and stick to it, you can definitely achieve more satisfactory results.