Hello - I agree with the answers below. When the Bellafil is placed you should see the result immediately. It will begin to swell and so you may have a mildly exaggerated volumization by the time you get home- for example. That swelling will dissipate, and there is a bit of a "deflation period" at 2-4 weeks. I usually tell patients- this is when you remember why you had the filler in the first place. You see a return of some of your volume deficit. But over the next few months you will see the volume return and an improvement in skin quality as well. Mother nature takes her time making that new collagen - typically approximately 3-6 months for full collagen building effect and contraction to get to your final result. I would say this- perhaps wait until the 2-4 week mark and see if you notice the deficit returning. That is your hint that there was some positive change, now it is a little deflated, and then the volume will return. Depending on what you see, you could go in and speak to your provider about whether or not you need more filler to get the improvement you are looking for in the tear trough. Sometimes a combination of different treatments may be what is needed, sometimes just more filler. But this is a very complicated area of tissue and being too aggressive with fillers can set you up for problems. Hope that was helpful!