What is a filler?
First of all, what is a filler? In function it replaces areas of your face that has lost volume (cheek bones, lips, etc). There are two main categories of of temporary fillers: hyaluronic acid (Restylane, Juvederm, Belotero) and calcium hydroxylapatite (Radiesse; Galderma). There are also permanent fillers out there: poly-L-lactic acid (Sculptra) and polymethylmethacrylate (Bellafill).
Well, what is that stuff?? Hyaluronic Acid (naturally occurring in skin), Calcium Hydrolxylapatite (naturally occurring in bones), Poly-L-lactic acid (biocompatible, biodegradable synthetic substance), Polymethylmethacylate (biocompatible, not degradable, synthetic).
The differences in fillers are defined by what they are made out of: how heavy it is, how likely it is to move once placed, how likely it is to take on water (swell), how easily it is broken down, and how long it will last.
These different properties help providers determine what products should be used and where! Check out other blogs for more information on particular products and their properties!