This is all fine and well, but there was still room for improvement—which brings us to the third generation of fillers: polyacrylamide, alkylacylates and high molecular weight hyaluronic acid. The first two members of this group are very similar, being made from a polyacrylamide resin.
Both fillers have been approved by Health Canada for use in the lips, and both are extremely popular with patients .
The benefit of these third-generation fillers is that they are less visible that earlier formulations, with results that are extremely natural. They can be blended easily into existing tissue, with no lumps or bumps.
The end result of all this innovation is that the “puffy” look has been replaced with a more natural and youthful appearance .