Best non-surgical treatments for V-Shaped, Jawline Contoured Face?

While it is difficult to make a recommendation without at least a few photos, I can tell you that injections of Botox into the masseter muscles are simple and an excellent way to slim down the jawline. It is particularly effective for Asian patients that often have a square jawline they would like to improve. The procedure does require precision in placement and dosing amount to achieve the best possible result, so make sure the doctor you choose for your treatment is both experienced and board certified. 
Another option for creating a V-shape might be to add volume to the chin and outer cheeks, which can be accomplished using injectable dermal fillers. This helps raise up the sagging jowls. I have a technique I call the picket fence, which can be added to the cheek to reduce chubbiness and enhance the contour. The Silhouette InstaLift with threads is also a favorite with Asian patients to reshape the face and lift up.  However, I would need to see you in person to determine whether this procedure would create proportion and balance with the rest of your facial features. I would look for a dermatologist who is experienced in working with Asian patients to ensure the results you achieve are both natural and beautiful. 

FaceTite can internally tighten the skin in the lower face and neck. After all the skin has been heated and contracted, we shape the neck with liposuction to give definition and remove stubborn pockets of fat. In one quick treatment, we can tighten skin, remove fat, and contour the lower face, jawline, and jowls with only a weekend of downtime. Keep in mind that combination approaches will give you a more significant improvement as opposed to a single procedure. I recommend getting a consultation with a board-certified cosmetic dermatologist and facial sculpting expert. Best, Dr. Emer

Hi Kimmy,
Many asians have a constitutional predisposition for stronger and squarer jawlines, partly bony, and partly muscle in aetiology. To address your concerns, I would suggest Botox for the masseter muscles first, followed by Ultherapy 3 to 4 weeks later to address the midlower face. That should contour the jawline and lift/tighten some skin. To get a more V line face shape, there is also the option of a  hyaluronic acid filler with good structural effect such as Allergan Volux or Restylane Defyne for the chin. For the cheeks and midface, I either use Allergan's Voluma or insert rejuvenating dissolvable threads to rejuvenate and volumise the midface naturally. If the skin is very lax or if you are seeking a more dramatic lift, you can choose to have a midlower face threadlift +/- Ultherapy and Botox for the masseter muscles.
I hope this helps!