Weak jawline - would Aqualyx or filler help? (photos)

I would be concerned that any dissolving of fat would lead to greater loss of jawline and chin definition. On the other hand, the artistic use of appropriately robust HA fillers can create improved jawline definition and achieve more appropriate chin augmentation and projection. You would wise to consult with a board certified cosmetic dermatologist. Best of luck.

Facial aesthetics on young people is primarily determined by bone structure.
The great majority if not all patients seeking chin and neck liposuction have a deficient mandible.
Demandable pass different parts and different parts of the mandible can be in or out of balance.
It’s possible to have a Mandible that is overall small and lacking in projection while at the same time having quite a projecting chin. this scenario is the most difficult to comprehend because the chin sticks out yet is still insufficient.
I’m projecting chin creates a sulcus or a fold just below the lower lip. this is sometimes referred to as the labiomental angle.
If the Chin projects then augmenting it further will worsen the labmental angle eventually creating something called a witch his chin deformity.
If the body of the mandible is insufficient then this will cause certain aesthetic issues. If the mandible lacks sufficient projection than the underlined platysma muscle will drape the neck in any more oblique fashion. This is not corrected by augmenting the chin with an implant or sliding genioplasty.
To get a good quality assessment regarding bone structure I suggest having a few in person consultations with local board-certified plastic surgeons.
Your concerns are not related to fat distribution and if anything your fat layer is actually quite thin.
Plastic surgeons tend to be soft tissue oriented while oral surgeons tend to see things more from a facial skeletal perspective.
Making an accurate assessment is not always easy so expect different providers to have different explanations and different recommendations.
I don’t think Liposuction is going to do a whole lot in your case.
Don’t expect soft tissue solutions to do much for a problem it’s based on bone structure.
The true solution is probably more complex than what you’re willing to go through.
Recognizing the inherent limitation of soft tissue manipulation can at least save you from disappointment or problems that can come from inappropriate treatment.
Best,
Mats Hagstrom MD