Lip fillers, such as Juvederm, are designed to provide temporary enhancement by adding volume to the lips. Typically, these fillers are expected to last anywhere from 6 to 12 months, depending on factors such as the specific product used, the individual's metabolism, and lifestyle factors. However, some patients may notice that the effects seem to diminish more quickly. There are a few reasons why this might occur: Metabolism: Some individuals naturally metabolize the filler more quickly than others, which can lead to a shorter duration of effect. Initial Swelling: After the initial treatment, swelling can make the lips appear fuller. As the swelling subsides, some patients might perceive this as a loss of volume, although the filler is still present. Filler Blindness: As you mentioned, filler blindness can occur when patients become accustomed to their enhanced appearance, leading them to believe that the effects have worn off when, in fact, they haven't. Injection Technique: The technique and location of the filler injections can also influence how long the results last. Product Choice: Different formulations of hyaluronic acid fillers have varying longevity, so it's important to discuss the best options with your provider. If you feel that your filler is dissolving too quickly, it's advisable to follow up with your provider. They can assess whether the filler has indeed diminished or if other factors might be influencing your perception. Additionally, if desired, they can discuss options for maintenance treatments or alternative approaches to achieve your aesthetic goals.