I went in for my first Kybella treatment with the expectation of receiving two vials, and my injector felt very strongly that I should only get one. I do feel like I have a good amount of submental fulness so this definitely came as a surprise. Of all the research I've done, it seems that most professionals don't think one vial is enough product to make progress on even the most mild cases. Is it true that one vial is a waste of time/money, or can I still expect to see some improvement?