I have to disagree with the other comments posted above. While no studies, to my knowledge have supported a relationship between lasers and fillers we have definitely seen a relationship clinically in my office. We first noticed a diminishing of results from fillers with our own staff members several years ago when Fraxel laser treatments were performed after injecting Restylane and Juvederm. We eventually narrowed it down to a time period of 2 months following injection of the hyaluronic acid filler when it seemed to be vulnerable to laser treatment. We also did a side-by-side comparison on several staff members, using Fraxel laser on only one side of the face after filler injections and did see a reduction in correction within 1-2 days after laser treatment.
My theory on this is that hyaluronic acid fillers bind water and Fraxel laser, among many other lasers, are attracted to, and therefore heat up, the water molecules in the skin. This could account for its effect on the fillers. We have also seen this effect with GentleYag laser and SmoothBeam laser. Because of this effect, we have avoided use of other lasers and IPL devices within 2 months of injecting fillers.
Because of this effect we have even used lasers to intentionally diminish fillers after poorly done treatments were done by other offices. We found this helped with Radiesse injections also, so the effect may not be limited to just hyaluronic acid fillers such as Juvederm and Restylane.
I don't know if IPL or Thermage have the same effect because we avoid all heat-producing treatments in the skin for 2 months after all filler treatments now, but I have to assume that the heat produced by these techniques will probably diminish the filler to some degree. I would wait 2 months after your filler is placed before having laser treatment.