Filling the chin with hyaluronic acid usually lasts 1-2 years. The duration can be extended on top of this if the patient is better adapted to hyaluronic acid. Hyaluronic acid is a large molecular compound, and different types have different maintenance times. Generally speaking, the larger the molecule, the longer it lasts with hyaluronic acid fillers. In the current medical plastic surgery process, the use of hyaluronic acid for chin fillers is a relatively common treatment. Hyaluronic acid is a substance found in natural organisms, but because of this property, it is excreted from the body with human metabolism. Therefore, if you want to maintain the effect of the filler for a long time, you need to inject it continuously. It is recommended that patients who use hyaluronic acid to fill their chin should take good care of themselves after surgery, do not touch the filling area for a week, and pay attention to hydration and moisturization for better sustained results.