Which Hylauronic Acid Filler Lasts the Longest?

We now have a number of hyaluronic acid (HA) fillers to choose from in the U.S. and there are likely many more to come. Each of them has their own unique qualities that affect the injection technique, results, and longevity. The longevity of a particular filler can be variable depending on the area that was treated, the amount that was injected, and the person that it was injected into. Essentially, there are not necessarily any rules about how long the filler will last... more