Hyaluronic acid (HA) fillers have many favorable characteristics that make it a popular
injectable filler device. Its minimal immunogenicity and relative ease of use has
helped HA become the most commonly used injectable filler today. A brief history of
injectable fillers, the various injection techniques, and legal ramifications are
discussed. A review of the most recent literature compares the efficacy and safety
of HA to other injectable filler substances.
Hyaluronic acid - fillers - Restylane - Perlane - Juvederm