How Does Botulinum Toxin for Jaw Reduction and Facial Slimming Work?

For individuals with a wide jawline caused by overdeveloped muscles, injecting botulinum toxin into the jaw area reduces muscle activity, causing it to shrink over time. This naturally contours the face to look slimmer.

What Causes a Wide Jawline?

A broad facial structure or a wide jawline can be a source of concern for many. The primary causes are divided into: 1. Bone Structure: Inherited congenital bone structure. 2. Accumulated Fat: Often accompanied by a double chin or chubby cheeks. 3. Jaw Muscle (Masseter Hypertrophy): Caused by frequent use of chewing muscles—such as chewing gum, ice, grilled squid, or teeth grinding (bruxism)—which enlarges this muscle group.

How Botulinum Toxin for Jaw Reduction Works

If assessed and found that the wide face is due to "muscles," injecting botulinum toxin is considered a highly effective method. The product relaxes the masseter muscle, reducing its contraction and movement. When the muscle is no longer heavily worked, its size naturally decreases (atrophy), resulting in a noticeably slimmer, V-shaped facial profile.

Treatment and Assessment Steps at Kazumi Clinic

As mentioned, not everyone with a wide face has overdeveloped jaw muscles. Doctors at Kazumi Clinic therefore prioritize a "clinical assessment" first.

• The doctor will ask the patient to clench their teeth to palpate and assess the size and strength of the masseter muscle.
• If the wide jaw is caused by muscles, the doctor will calculate the appropriate dosage (typically 40-60 units, depending on muscle size).
• If there is also an issue with accumulated fat, the doctor may recommend combining it with fat-dissolving mesotherapy or HIFU to achieve maximum jawline definition.

Precautions and Self-Care Guidelines

• You can resume normal daily activities after the injection. Some temporary jaw fatigue while chewing hard foods may occur during the first 1-2 weeks, which is completely normal.
• Avoid frequently chewing tough or hard foods, as this can cause the jaw muscles to enlarge again more quickly.

Frequently Asked Questions (FAQ)

Q: How many days after jaw reduction until my face looks slimmer? A: Unlike wrinkle treatments, jaw reduction requires waiting for the muscle to shrink. Changes will begin to appear in the second week, and the results will be fully visible at the 1-month mark. Q: Does jaw injection cause sunken cheeks or make cheekbones appear higher? A: If the doctor correctly assesses and targets the injection points, this issue will not occur. At Kazumi Clinic, the doctor injects in safe positions that do not spread to other muscle groups, preventing sunken cheeks or a restricted smile.

Medical Note: Results may vary from person to person, and must always be assessed by a doctor before treatment.

---

Interested in a skin consultation or booking an appointment?

Kazumi Clinic is an aesthetic clinic in the Sukhumvit-Phra Khanong area, supervised by a team of medical specialists. We provide services using 100% genuine medication that is safe and standardized, along with a free facial assessment and personalized treatment design!

✅ Contact us on LINE to book an appointment / consult: Click to add LINE (@kazumiclinic) 📞 Call us directly: [081-712-7486](tel:+66817127486) 📘 Follow promotions: Facebook Kazumi Clinic Skin 📍 Clinic Location: 1558 Diamond Condo Project, Sukhumvit Road (conveniently located near the BTS) View Map