TYPE OF FILLERS
In general, there are two kinds of fillers.
Your own bodily substances can be used as a filler. In particular, fat is useful in lipofilling. Fat is aspirated from other areas with excess fat, processed and injected in areas of the face. These are surgical procedures that need to take place in an operating theatre.
Synthetic fillers are off the shelf products that can be injected as an office procedure, some are permanent and some are temporary. The permanent fillers can sometimes produce palpable nodules that can be visible. These are very difficult to treat and these products are therefore less popular. Temporary fillers dissolve slowly and completely, making them very safe. The most commonly used temporary filler today is Hyaluronic Acid.