What procedure is most effective and recommended for slimming and enhancing the lower face/jawline on a round, undefined face?

You will likely have the best results from a combination of treatments. Botox to the masseter muscles can help slim the jawline. Fillers like Juvederm Volux are specially designed to help contour the jawline. Other treatments such as Morpheus8 can address overall skin tone and texture. Vist my website or a provider near you to learn more.

Hello,

Thank you for your thoughtful question—it's great that you're considering both your aesthetic goals and long-term facial balance at your age.

For patients with a round, wide, or less-defined lower face who want to achieve a slimmer, more contoured appearance (such as a V-line or heart-shaped face), there are several non-surgical and surgical options to consider. Since you're looking to maintain a youthful look and avoid buccal fat removal, here are the most effective and recommended treatments:

1. Masseter Botox
This is an excellent non-surgical starting point, especially if you have hypertrophy (enlargement) of the masseter muscles. It works by relaxing the muscle, which gradually slims the lower face over several weeks to months. It's safe, temporary, and helps create a narrower jawline without compromising natural fullness elsewhere in the face.

2. Chin and Jawline Filler
Dermal fillers can enhance and elongate the chin or improve jawline definition, creating the illusion of a slimmer, more structured lower face. This is a customizable and reversible approach that works well for balancing proportions without surgery.

3. Kybella or Deoxycholic Acid Injections
If there is any submental fullness (under-chin fat), Kybella can help contour this area. It permanently dissolves fat and enhances jawline definition when performed carefully.

4. Skin Tightening Treatments
Radiofrequency (RF), ultrasound (like Ultherapy), or microneedling with RF can help tighten mild skin laxity and add contour to the face—especially useful if you're avoiding surgical intervention.

5. Surgical Options (If Considering Later)
While reconstructive jaw surgery (orthognathic surgery or genioplasty) is an option for certain structural issues, it's typically reserved for more severe asymmetry or bite concerns. At 19, you're likely still a good candidate for non-invasive treatments first, especially since your facial bone structure is still maturing slightly.

My Recommendation:
Start with a consultation for masseter Botox and possibly chin/jawline filler to enhance facial harmony non-surgically. This approach is subtle, balanced, and ideal for someone your age who wants to avoid drastic or irreversible changes while still achieving a more defined look.

You're definitely on the right track! Achieving the desired look often requires a combination of approaches tailored to the individual's face shape. Each technique contributes uniquely to the overall result. Thinning the masseter muscle with Botox and enhancing the chin with filler or an implant are highly effective methods. For individuals with fullness in the buccal area, a conservative fat pad reduction can refine the facial contour without creating an aged appearance. Additionally, neck liposuction or jawline liposuction, combined with fillers along the jawline, can help sharpen and define facial features for a more sculpted look.