Does Vivace work for tightening skin on the neck and jowls? Or is it more for smooth and healthy skin?

Unfortunately, much of the hype, marketing and advertising for many of the so-called "next big thing," relatively expensive bells and whistles devices, whether light or energy-based (and Vivace combines LED light with radiofrequency microneedling), remains largely unproven and backed more by device manufacturer supported marketing than hard science. So, in general, when it comes to all these, a healthy dose of "buyer beware" is the order of the day. Without photos clearly demonstrating the problems, it is hard to say whether you might profit from the use of volumizing fillers for the jowls and skin boosters for the neck. Skin boosters are biostimulatory fillers that promote the synthesis of new, native collagen and elastic fibers, which help to smooth and tighten the skin. In my Israel satellite facility, where a far greater number of regulatory agency approved fillers are available, I typically use Restylane Skin Boosters, Juvederm Volite and Hydromax for this purpose. In my NY office, I generally opt for Restylane Silk. If needed, simple, relatively inexpensive conventional microneedling with or without the addition of a low concentration of TCA may be provide additional smoothing. You would be well advised to seek consultation and treatment by a board certified aesthetic physician. Best of luck. 

A combination approach would give the most improvement. Kybella, PDO Nova Threads, Ultherapy and/or ThermiRF treatments (Venus Legacy) are non-invasive options that would do well in combination for skin tightening for the neck. VASER with ThermiRF is a great alternative for contouring and tightening the chin and neck and can be combined with a neck lift at the same time, if you're a candidate. See a cosmetic dermatologist for a long term treatment plan. Best, Dr. Emer.

Vivace can be used on the face as well as off the face. When treating the jowls, I like to include mid face as well as the neck to see the most amount of skin tightening. As a result of a series of Vivace treatments, collagen production increases in the skin which improves its tone and texture. The final result of Vivace continue for up to three to six months after the completion of a series.  This is by far the easiest treatment, with the least downtime to address aging changes.
Sending you positive vibes,

Dr. Bonakdar