Tatchakorn Thaisamarn, MD

Yes, chin filler can migrate, although it's relatively uncommon. This can happen due to various factors, including the type of filler used, the injection technique, and post-procedure behavior.

Here are some key points:

1. **Type of Filler:** Hyaluronic acid fillers, commonly used in the chin, are generally well-tolerated and less likely to migrate. However, improper placement or excessive amounts can increase the risk.

In your scenario 0.5 ml is quite a small amount that is less likely to migrate from over-filled.

2. **Injection Technique:** If the filler is injected too superficially or in the wrong area, it may move over time. Experienced practitioners are less likely to make these errors.

3. **Post-Procedure Care:** Pressing or massaging the area too soon after the procedure can cause the filler to move.

First 24–48 Hours: Avoid vigorous exercise or massaging the treated area to allow the filler to begin settling. You may experience some swelling, redness, or tenderness during this time.
After getting dermal fillers, it's generally advised to wait at least 2 weeks before having a facial massage. This gives the filler enough time to settle into place and minimizes the risk of moving it or causing complications.
After 2 Weeks, you can typically resume normal activities like sleeping on your face, including facial massages. By now, the filler should be well-integrated into the tissue.

4. **Anatomical Factors:** Individual differences in skin thickness, muscle movement, and blood flow can also contribute to filler migration.

In most cases, hyaluronic acid (HA) fillers, which are the most commonly used type, will naturally dissolve and be absorbed by the body within a year. If non-hyaluronic acid fillers are used (like calcium hydroxylapatite or poly-L-lactic acid), they break down differently. These fillers are also gradually metabolized and absorbed by the body but over a longer period, sometimes up to 2 years or more.

Make sure your practitioner evaluates the pre-existing filler before adding more volume every year to prevent overfill/pillow face. To avoid that, ultrasound can help determine where the filler has been placed and if it has migrated.

Both Plinest/Rejuran are polynucleotide injectable collagen biostimulators that stimulate your skin in a non-inflammatory process.
However, in my practices, I usually recommend my patients not to have any injection procedures at least 2 weeks before dermal filler injection, especially in the same area of treatment.
The reason is that with any kind of injection, you can have some unusual reaction or tissue inflammation. Dermal filler injection needs an accurate evaluation to decide the proper type and amount of the filler to be injected.