Everybody recalls the tragic results shown by Leslie Ash in early 2000, who received lip filler injections. The product used in her case was an injection of liquid silicone. This has no relationship at all to dermal fillers used today in aesthetic procedures.  There are a few issues and problems associated with hyaluronic acid fillers but these are in general very rare. These issues should be discussed with your aesthetic practitioner to ensure you know he or she is properly qualified and that you yourself won’t be added to a list of unsuccessful treatments and remain in safe hands.