Lip filler migration occurs when the injected product moves to areas where it shouldn’t be, often due to overfilling. Imagine your lips as a container—like a shot glass versus a pint glass—each with a limited capacity.

Overfilling combined with the natural movement of your lips, like when kissing, can cause the filler to squeeze out into surrounding areas, leading to unwanted migration. Understanding the stages of filler migration is crucial if you’re considering lip filler, filler removal, or aesthetic lip surgery.

Dr. Steven Harris has even developed a classification system to categorize the severity of migration, highlighting the importance of proper filler placement.