Does Vanquish treatment causes skin to loosen? I am on my 3rd treatment and my buttocks are sagging.

Thank you for your question. Vanquish works by destroying the fat cells, therefore volume reduction. The only reason I can think of that you would notice more sagging skin would be if you got a lot of volume reduction at once and the skin didn't have time to properly respond (shrink). Since you are only on your third treatment I cant imagine the two treatments thus far causing that much laxity. I would follow up with your provider and take a look at some pre/post photos. Hope this helps. 

Vanquish is good for permanently removing stubborn areas of fat and providing mild skin tightening, but needs a combination approach to get the most improvement. I recommend combining Vanquish with Venus Legacy/Exilis Ultra treatments. We currently use a fire and ice treatment with Coolsculpting and Vanquish for good results in fat removal. However, a VASER hi definition procedure would give you the best results for shaping the buttocks. See an expert for a formal evaluation. Best, Dr. Emer

Hello there,
     We would typically not treat the buttock area since some volume is typically desired in this area. That being said, anytime there is significant fat reduction without skin removal or tightening, it is possible to get wrinkling and increased laxity. At times this will dissipate as the skin tightens back up, but is very dependent on the patients' age, skin quality, sun damage, genetics...etc. I would definitely discuss this concern with your provider since there are other options (Exilis Ultra and Emtone) that will help to tighten the skin for you. Good luck!
-Sarah RN BSN