There are many different types of cosmetic fillers. The traditional and oldest form on the market is derived from bovine (cow) collagen. There is also a form derived from human collagen. Given their short duration and a greater chance of skin reactions, these fillers are rarely used anymore.
The newest generation of fillers is made from a substance, hyaluronic acid, which occurs naturally throughout the body and is found predominantly in the skin. This substance is what keeps our skin plump and young-looking and is what we lose over time as we age.
Three of the most popular of these products are Restylane®, Juvederm®, and Voluma™. They are made from NASHA — non-animal stabilized hyaluronic acid — and last at least twice as long as traditional bovine and collagen fillers.
For deeper lines or folds, we recommend Perlane (similar to Restylane, but a larger particle size) or Juvederm Ultra Plus.