It is important to understand the difference between "stimulatory" fillers and "wrinkle" fillers. When treating problems due to volume loss such as cheek hollows and sagging skin beside the mouth, I will almost always use stimulatory fillers such as Radiesse and/or Sculptra. They are injected deeper, beneath the skin, and will generate more volume to create a much better lifting effect for sagging skin. They work by stimulating your skin to produce more collagen, which is why they are much more effective at treating problems due to volume loss. It is my preferred treatment, even in first time filler patients, for areas that need greater volume. I also routinely use Radiesse in the tear troughs where, when carefully injected, give a very nice, long-lasting result.
The video below shows me injecting my wife with Radiesse into her lower cheeks, marionette lines, and jaw line and has before and after pictures to show you the results.