I suggest patients wait at least six months after one skin tightening procedure involving either Thermage or Ultherapy before retreating themselves. That is not to say that it couldn't be done when the tenderness is gone at an earlier time, but then one is not seeing the true benefit of the first procedure if they rush in to do another. It takes at least six months to see the collagen production and tightening effect of these procedures. Depending on the level of sagging that existed before the procedure, some patients might be glad they didn't have a second procedure too early as they saved their money by waiting and were happy with their result. I do however, find that Ultherapy consistently provides better tightening to my patients' faces than Thermage when I perform their treatments but still see good results with body tightening with the use of Thermage especially the crinkly skin of some abdomens, especially after weight loss, or liposuction or other fat reduction procedures.