Juvederm & Restylane don't work on me. Lips remain plump & swollen for 1 day & then go back to normal! Am I metabolizing it?

Realistically, there are only two plausible explanations. One explanation is that more product is needed to meet your expectations. A second possibility is that the filler isn't being placed into the correct anatomic area to achieve the look you desire. Sometimes the injector needs to consider not only the size and shape of your lips, but also the relationship of your lips to your teeth and bone structures. Best of luck

You could consider using an alternate product. Juvederm makes many different products you could try, as well as Teosyl. If you have been to various injectors and always experienced the same results it is difficult to blame it on technique. Perhaps attempt administering more product. All the best,

Hyaluronic acid fillers such as Juvederm and Restylane are popular for lip enhancement since experienced injectors can achieve soft, natural-looking lips.  After your next treatment, return to your injector two weeks later to see if you require more filler.  Photos taken before your treatment would be helpful in monitoring your results.