The typical hyaluronic acid face fillers last between 6 months – 18 months. The duration of face fillers will depend on how fast your body absorbs the hyaluronic and constant movements of the facial part. Different people have different absorption rate, however the minimum is at least 6 months.
As you are required to use your mouth everyday for eating and talking, the excessive movements will make the fillers last shorter. Areas such as chin where there is minimal muscle movements, it can last longer.