The new injector at the plastic surgeon office I go to seems to do A LOT more units than other injectors I have been to. She told me I needed 8 units to do a lip flip, although the internet said typically 2-4. I had 42 units done recently, which is the most Ive done, my right eye and right side of forehead did not seem to take all the way. And shes saying it takes 14 days. I was always told 7 days. I feel that she is diluting it so I require more so it cost me more.