Large line carving is to implant the protein line that can be absorbed by human body into the subcutaneous layer of skin, and then pull it in the original direction. With the help of the "thread lifting shield", the human-like peptide nutrition needed by the human body is supplemented, and the pulling direction is fixed, so that the loose chin, chin, canthus lines, decree lines and head lifting lines are stretched, and the local skin is smooth and delicate, thus achieving the cosmetic effect. Collagen should not be taken after thread carving. Extra collagen accumulation can cause skin abrasions and swelling.

The big line carving is actually a buried line crane. The principle is to insert PPDO protein line thinner than hair into skin. After the protein line enters the body and reaches the fascia layer, it quickly forms a spiral after being manually twisted by the doctor, showing that the molecules quickly accumulate and tighten around this spiral. At the same time, it promotes the generation of collagen molecules between skin and fascia layer, rearranges the original stiff and irregular tissues or drooping muscle tissues, and achieves the effect of stretching the skin. However, with the metabolism of protein line plant fat, the tensile effect on fibroblasts will not be obvious, and the effect of lifting plain lines will disappear, which requires repeated implantation. "Line-lifting shield" can make the effect of line carving obvious and reduce the number of times of line carving again by beauty seekers. Because the' human-like peptide' contained in the' lifting thread shield' can repair protein molecules urgently and intensively, which is a necessary condition for collagen synthesis.