The nice thing about lip fillers is that they can be customized to where you need them. If you are looking for fuller lips we'll go in one place, and if you want more projection or definition in another. Often we'll do both. It depends upon what your goal is, and where you are starting from.
I like to use a microcannula technique for lips as it reduces the bruising and increases the comfort of this procedure. This technique gives excellent predictable results.
Best of luck!