The biggest advantage and possibly the biggest disadvantage of hyaluronic acid is that it can be completely metabolized. Of course, strictly speaking, it is not standardized to completely metabolize hyaluronic acid, because even pure hyaluronic acid needs to be added with crosslinking agent, and there are so-called intermediate and long-acting hyaluronic acid on the market. The intermediate and long-acting components of this kind of hyaluronic acid products are not hyaluronic acid, and some components are not easy to degrade. There is no case of setting after injection for more than three times. The fact is, no matter how many injections you take, the effect is temporary. Hyaluronic acid is generally metabolized cleanly in 6 months, but the effect cannot be maintained for a long time. Although there is still residue in the later stage, it is generally injected three times a year 1 year to maintain the effect.
Autologous fat facial filling is the most popular facial plastic surgery method at present. It has the characteristics of simple and safe operation, short operation time, quick recovery, no pain and no side effects. Compared with other injection plastic surgery methods, autologous fat injection is relatively safe because it is not prone to rejection. So it is better to use autologous fat.