Hello! My name is Jessica, I am a physician assistant, and one of the providers at Aesthetic Skin in Winnetka and Chicago. This is a great question. It’s understandable to be concerned about the changes in your jawline, especially after investing in treatments like Lipodissolve and HIFU. Given that you’re only 30, it’s important to determine whether the bulge you're experiencing is primarily due to residual fat, loose skin, or a combination of both. The residual bulge you’re noticing could be due to a few factors. Residual fat from the initial Lipodissolve treatment might still be present, particularly if the fat loss was not uniform or if some fat pockets were more resistant to the treatment. Alternatively, loose skin could be contributing to the bulge, especially if the fat loss was significant and the skin did not fully retract. Since you’re relatively young, skin elasticity should still be good, but significant fat loss can sometimes outpace the skin’s ability to adapt. Kybella could be a potential option for addressing any remaining fat. Kybella contains deoxycholic acid, which helps dissolve fat cells in the treatment area. If the bulge is primarily due to residual fat, Kybella could help improve the contour of your jawline. However, if the bulge is more related to loose skin, Kybella might not provide the desired result and could potentially exacerbate the appearance of loose skin by further reducing fat volume. Regarding your recent HIFU treatment, it’s important to remember that results from HIFU can take time to fully manifest. HIFU works by stimulating collagen production to tighten the skin. Early post-treatment changes can sometimes include temporary swelling or changes in the appearance of the area, which may give the impression that the bulge is more pronounced. It’s common for improvements to become more noticeable several months after treatment as collagen builds up and skin tightens. In summary, if your bulge is mainly due to residual fat, Kybella might help refine the contour. However, if loose skin is the primary issue, Kybella alone might not be sufficient and could make the skin look looser. Considering the mixed results from HIFU, it might be best to wait a bit longer to see the final results before exploring additional treatments. I hope this helps and best of luck!