That is a great question. The studies suggest waiting at least one month between treatments. Having said that, I have patients that are reporting continued improvement for at least 2-3 months. You will be swollen after the initial injection with the swelling lasting up to 3-4 weeks before your are "back to where you started", with the significant swelling being better after a week or so in most. After week 4 you will see the area shrink and the skin tighten for at least the next month, and some patients tell me 2 months. You may fall into the group that wants to get there full treatment over asap and comes back each month for the treatments to get to your "end point" as soon as possible. But you may also want to see the full results of your injection before proceeding. "Slow and steady wins the race" for many of my patients. I think the sweet spot is 2 months-you have seen most of the improvement by then and can judge if you are probably going to want another treatment and go ahead, or wait if you are very close to where you are satisfied for the slight additional improvement. But remember that most patients choose to have 2-4 treatments. But you also don't miss a "window of opportunity" by waiting longer than 2 months for an additional treatment. So you can wait and come back whenever it is convenient to your schedule. I think that 4-6 months after a treatment is longer than most patients need to wait to make a good decision of needing/wanting additional Kybella.