ABSTRACT
As the range of soft tissue augmentation products proliferates, most will be used (with varying degrees of success) to shape and augment the lip. The range of outcomes for this indication depends on the skill of the injector, the anatomy of the patient and the intrinsic properties of the product. Permutations of these interacting factors are infinite and it is the range of combinations that is responsible for the complexity (and fascination) of lip rejuvenation with injectable products. Based on personal experience, the perfect lip is the one that "wows" the patient and makes them happy with the procedure. Individualizing the injection is of paramount importance and should take priority over a formulaic approach that defines each lip injection as identical. This review will discuss some of the factors that should be considered prior to injecting a lip with soft tissue augmentation products.