Thank you for sharing this—this is actually something I see fairly often. Chin liposuction can be very effective, but it doesn’t always fully address all the factors that contribute to fullness under the chin or a less defined jawline, especially over time. Since you’ve already had liposuction and are now even lighter than before, the persistent fullness is usually due to a mix of factors rather than just fat alone. Common contributors include residual fat, skin laxity, muscle banding, and even the natural shape or position of the chin and jaw. Here are the most useful options depending on what’s driving your concern: 1. Skin tightening treatments (non-surgical) If the main issue is mild to moderate skin laxity after fat removal, treatments like radiofrequency tightening (e.g., RF microneedling) or ultrasound-based devices (like Ultherapy-type treatments) can help contract and firm the tissue. These don’t remove fat, but they can improve definition by tightening loose skin. 2. Injectable treatments for contouring In select cases, deoxycholic acid injections (fat-dissolving injections) can still help small remaining fat pockets, even after liposuction. Results are gradual and require a series of treatments, but they can refine contour irregularities. 3. Chin and jawline filler (structural balancing) Sometimes the issue isn’t just under-chin fullness, but also a weak chin projection or jawline definition. Strategic use of dermal fillers in the chin or jawline can improve balance and create the visual effect of a sharper profile, even without further fat removal. 4. Submental muscle treatment (if platysma bands are contributing) If there is visible banding or neck muscle pull, neuromodulators (like Botox-type injections) can soften the platysma activity and improve neck contour in certain patients. 5. Surgical revision options If there is significant residual fat, skin redundancy, or structural laxity, a neck lift (lower facelift/platysmaplasty) is sometimes the most definitive option after prior liposuction. This addresses both skin tightening and deeper structural support, which liposuction alone cannot fix. In your situation—given prior liposuction and weight loss—the most important step is identifying whether the concern is primarily skin laxity, residual fat, or structural anatomy. That distinction determines whether a non-surgical tightening approach or a surgical revision would give the most noticeable improvement. Often, the best results come from a combination approach rather than a single procedure, tailored to what’s actually driving the contour underneath the chin.