Horizontal Line Under my Nose After Lip Filler? (photo)

Unfortunately, if you create an area of fullness, the area adjacent to it can look like a valley. This is a common problem when making the lips too full.  You have to fold somewhere. Perhaps the lips could be a touch smaller or you can consider having the philthrum columns injected which could act like support stays to prevent the upper lip folding all the way back.  In any case the product will surely go down with time.  

​Fillers such as Restylane Silk, Belotero, or Juvederm can work well to treat lines around the mouth, but the best first option is laser resurfacing or deep peels to induce collagen production. Superficial radiofrequency devices and microneedling can help as well and are less invasive. I suggest going to an experienced cosmetic dermatologist with expertise in lasers and fillers. Best, Dr. Emer​

              Enzymatic degrading of the overfilled area as well as additional filler to the line can help the appearance here.  Kenneth Hughes, MD Los Angeles, CA

I would advise patience and diligence. Patience will allow the overfill to be minimal and resolve on its own. Diligence will help you find the right surgeon to minimize these risks. Trying to keep treating this area to try and fix it , risks worsening it. I would suggest you follow up with your surgeon if you do not see resolution.

This line occurred because the filler stiffened the part of your lip farther from your nose. You can either have some of that reversed, or have some filler added even further up toward your nose to stiffen that skin as well, whatever would look the best.