Is there a way to know if I might get an allergic reaction to lip fillers?

An allergy to Juvederm would be extremely rare. It is unlikely to be a problem for you. Injections with cannulas will limit possible complications. These fillers, (Restylane, Juvederm) are good to create a symmetrical and full lip. Implants or fat are alternative options. See an expert. Best, Dr. Emer

First-generation dermal fillers, introduced in the early to mid-1980s, were made of animal collagen and required a pat test first because they caused allergic reactions in about three percent of patients.With the new fillers, however, allergic reactions are rare. If you are concerned about how your body will respond, a skin test can be conducted. Your doctor will tray a small amount of the filler, injecting it into your skin. If no reaction occurs within about 15 to 30 minutes, it can be surmised that you're not allergic to that filler.