Jane YooFounder and Curator, K-Beauty Immersion at SCC Supplier's Day · Board-Certified Dermatologist & Mohs Surgeon | K-Beauty Strategist | Health Policy Analyst | BeautyTech & AI Consultant

Chin Filler Migrates Down, Not Out

4 Oct 2026 · 1 min

Watch on YouTube

1:02

In this educational video, board‑certified dermatologist Dr. Jane Yoo explains that chin filler can migrate downward over time, a phenomenon she attributes to the constant activity of the mentalis muscle and the mechanical forces of facial expressions. She notes that overfilling the chin—a limited anatomical space—heightens the risk of displacement. Dr. Yoo describes practical clinical clues that suggest migrated filler, such as a firmer, more defined fullness that appears after the injection, distinguishing it from natural fat. Recognizing that these signs are not definitive, she recommends using ultrasound imaging to confirm the presence and exact location of filler when the history and physical exam are inconclusive, thereby aiding accurate diagnosis and management.

Chapters

Hi everyone, I'm Dr. Jane Yoo, board-certified dermatologist and Mohs surgeon. If you've got chin filler and now you have fullness under your jaw that doesn't feel like fat, one possibility is migrated filler. One pattern we can see with chin filler is downward migration. The mentalis muscle is an active muscle that you use constantly when you speak, purse your lips, and make facial expressions, and the movement of the surrounding tissues may contribute to filler displacement over time. Overfilling can also make this more likely because you're putting more product into a relatively limited space. One clue is how the area feels. Migrated filler may feel firmer and more defined than the surrounding tissue, and you may notice that the fullness appeared sometime after you had your chin filler. But those clues alone don't definitively prove that it's filler. Fullness under the chin can have several causes. And if it isn't clear from the history and examination, ultrasound can show us whether filler is actually there and where it's located.