A beauty seeker consulted me on the Internet, saying that some organizations now tell her that there is now a newest technology that uses an electric knife for brow lifting, and that the scars after the operation are very shallow and the results are very good, is it true? In fact, regarding these explanations, I have seen some advertisements in my daily life, for example, introducing the use of radiofrequency electrosurgical knife or laser knife for incision, and how much it enhances the effect of the surgery. However, in practical terms, this kind of incision is not always good for scars. In our usual surgery, most of the ordinary scalpel for incision, cut to the subcutaneous layer when the use of radiofrequency scalpel for layer by layer incision, intraoperative field of vision is clearer, the anatomical level is clear, it is indeed helpful to the doctor’s operation. But how much of an impact, if any, does it have on post-surgical scarring? In fact, it is only for the deeper layers of the skin will have some impact, but for the epidermal layer and dermal layer of the scar does not have an impact, so the surgery to leave a scar, whether the scar is obvious with the knife used in the surgery does not have much to do with. Some organizations advertise that they use imported electric knife, hundreds of thousands or even millions of dollars, or say that the use of argon knife or ultrasonic knife to cut the skin layer, but the surgical effect in the end how much it can improve, or how much the impact on the scar in the end, the lack of a statistical data to support. From clinical experience, if the skin is incised with a hot electric knife, it must be more traumatizing than an ordinary scalpel, and at the same time the scars will be more obvious, so I have a negative attitude towards this kind of claim. Of course, it is true that if the advertised use of the ultrasonic scalpel for incision of the epidermal layer would be less traumatic to the skin. However, I think there is also a question mark as to whether such a cost is too high and whether the cost is proportional to the output.