Filler techniques are the most widely used surgical procedures in cosmetic surgery, as they are the best method of reducing wrinkles on a long-term basis. For years, dermatologists have known that water-binding soft-tissue fillers can replace the loss of collagen, elastin, and hyaluronic acid from the skin. Because filler formulas and application techniques are constantly updated and reevaluated, the dermatologist and cosmetic surgeon need a quick...