Causes of Lip Filler Lumps and Bumps Lip filler injections are a popular way to enhance lip size and shape, but they can sometimes result in unwelcome lumps or bumps. Understanding the causes behind these imperfections is key to addressing them effectively. Improper Injection Technique Improper injection technique is a leading cause of lip filler lumps and bumps. Injecting the filler too superficially or into an area with insufficient tissue volume can lead to visible lumps. Uneven distribution of the filler, whether it be over-injection in one area or under-injection in another, can also create bumpy contours. Filler Migration Another…