A Safe, Medical Approach to Correct Unwanted Lip Filler With Ultrasound-Guided Precision Lip fillers can create beautiful, natural-looking enhancement when they are placed precisely and in the correct amount. However, not every result remains ideal over time. Some patients experience lip filler migration, uneven volume, or changes that no longer suit their facial proportions. If your lips feel overfilled, asymmetrical, or you wish to reverse previous filler, ultrasound-guided