4 months after PDO threads, under my chin, is it safe to undergo chin liposuction?

A full set of facial photographs from all angles in a chin neutral position are required to make a determination about how best to proceed. If your fat deposits are located above the platysma muscle, then liposuction can improve your neck. If the fat deposits are also located below the muscle, then a surgical neck lift with a platysma plasty will be required.

Personally, I would probably not do liposuction in an area that had thread lift.
It depends a bit case by case, but if the thread lifts are in the same area that needs to be treated with Liposuction, I would probably pass.Different providers will have different views on this.
Not everybody seeking Liposuction is a good candidate for the procedure and delivering consistent quality. Liposuction results is more difficult than most people realize.
Finding somebody who’s truly mastered this procedure is generally more difficult than most people realize.
The number of plastic surgeons who have mastered liposuction is pretty small.
Liposuction is a permanent and irreversible procedure that can potentially leave people disfigured if not done correctly.
Without pictures we can’t begin to make an assessment.
Best,
Mats Hagstrom, MD