Usually, injections for the lines usually refer to filling with autologous fat and injecting hyaluronic acid, and it is impossible to compare which one is better due to the different conditions of each person. 1. Autologous fat filling: It is to suck excess fat from oneself and fill it into the area of the striae after special treatment, which has the effect of reducing and eliminating the striae, and the effect of filling autologous fat is natural and lasts for a longer period of time. 2. Hyaluronic acid injection: Hyaluronic acid is used as a filler material, and injected into the area of legal limit lines by injection. Hyaluronic acid injection is less traumatic, easy to operate, and can be finely adjusted to the injection site. However, the effect can generally be maintained in 6-8 months, and repeated treatment is required. If you need to know the effect of injections for decree lines, it is recommended to go to a regular hospital to consult related matters.