Hello! My name is Jessica, I am a physician assistant, and one of the providers at Aesthetic Skin - Winnetka & Chicago. This is a great question. Sagging skin near the jawline and a more squared lower face can often be improved with a combination of Botox and dermal fillers, depending on the cause. If the heaviness or squaring is due to enlarged jaw muscles (masseters), Botox can be injected into those muscles to slim and soften the jawline by relaxing them over time. If the sagging is more from volume loss or skin laxity, fillers can help by restoring structure to areas like the cheeks, chin, and jawline, providing subtle lift and contour. For mild to moderate jowling, strategically placed fillers along the jawline and in front of the ear (the preauricular area) can create a more defined, lifted appearance. However, if there’s significant skin laxity, non-surgical tightening treatments (like radiofrequency microneedling) or surgical options may give better results. I hope this helps and best of luck!