Vertical lip lines can be well treated with volume filler injections, most notably Restylane and Juvederm. While both products are similar, different physicians have a personal preference for one or the other. Globally, my preference is for Juvederm. Cost can vary between $400-800 depending on what product you need. In the situation you describe, where vertical lines around the lip are the area of concern, I usually will recommend Restylane. The reason is that Restylane comes in a smaller sized syringe, which is less expensive. Filling out the white roll of the lip (where you usually put lip liner) does very well with smoothing out mild to moderate vertical lip lines. Deep lines usually require dermabrasion or resurfacing in order to be completely treated, but can be reduced with volume enhancement alone. Filling out the white roll, the so called "Parisian Lip", creates the illusion of lip enlargement in addition to smoothing out the lines. This treatment usually does not take a full 1cc syringe. Restylane 0.4cc syringe (actually has 0.6cc in it) is often more than enough for this lip liner effect. If more plumping of the lip is desired, then a full syringe is usually needed. In that circumstance I will treat with Juvederm or Restylane 1cc syringes.