What can help to slim down lower face area and give a more defined jawline? (Photos)

Question

I have a round face shape and I hate it. However, I am interested in exploring fillers, especially if they can help with my jawline area. I have had kybella under my chin but I think the problem area is jowls? Or neck? But the lower face. Will Botox or filler help to slim this down and give a defined jawline? Any recommendations on any treatments before I spend money on something?

Anna Chacon, MD, FAAD · Answer

Thank you for your question and photos. When it comes to contouring a round face and enhancing the jawline, a combination approach often provides the most natural and satisfying result. Based on your features and concerns, here are some treatment options to consider:

1. Jawline and Chin Filler
What it does: Adds structure and definition, especially if the jawline is soft or lacks natural angles.

Ideal for: Creating a sharper contour and balancing facial proportions.

Results: Immediate, with minimal downtime.

2. Masseter Botox
What it does: Slims the lower face by relaxing the masseter muscles (the muscles used for chewing).

Ideal for: Those with a wide or square face shape due to muscle bulk, or those who grind their teeth.

Results: Noticeable slimming of the lower face in 4–6 weeks, subtle but effective.

3. Jowl and Pre-Jowl Filler or Skin Tightening
What it does: Addresses early jowling or sagging in the lower face, which can blur the jawline.

Options include: Hyaluronic acid fillers, or collagen-stimulating fillers like Radiesse or Sculptra in strategic areas.

Other options: Radiofrequency (RF) skin tightening or ultrasound-based devices (like Morpheus8, Ultherapy) can also help tighten loose skin.

4. Submental/Lower Face Contouring
You’ve already tried Kybella—great start. If the issue is more skin laxity than fat, it may be better to explore skin tightening devices or thread lifting for a subtle lift.

5. Neck and Jawline Synergy
The neck and jawline are closely connected aesthetically. Treatments like neck Botox (Nefertiti lift) or RF microneedling can tighten skin under the chin and along the jawline, improving overall definition.

Before You Spend:
It’s important to assess whether fullness is due to fat, skin laxity, or muscle bulk—this will guide the best treatment plan.

Filler adds volume, so if the main concern is excess volume or puffiness, it needs to be used strategically and sparingly to contour rather than bulk.

Conclusion:
For your goals, a combination of jawline filler, masseter Botox, and possibly skin tightening would likely deliver the best facial slimming and definition. Always opt for a provider who can tailor the approach to your anatomy and goals.

What can help to slim down lower face area and give a more defined jawline? (Photos)

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What can help to slim down lower face area and give a more defined jawline? (Photos)

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Everything you need to know about Dermal Fillers

Our mission is to create a world where every investment in modern beauty is Worth It.