Botox ลดกราม V-Shape — VERZO CLINIC

    TL;DR: The masseter is a large chewing muscle on each side of the jaw. When overdeveloped (from genetics or habits like teeth grinding), it creates a square jaw appearance. Botox relaxes the muscle, causing it to gradually atrophy and slim down over 4-8 weeks, creating a more V-shaped face contour.

    Written by Dr. Waleerat Thaweebanchongsin, over 10 years of specialized experience. Near BTS Ekkamai. LINE @verzo.

    Last updated: April 2026

    FAQ

    How does masseter Botox create a V-shape jawline?

    The masseter is a large chewing muscle on each side of the jaw. When overdeveloped (from genetics or habits like teeth grinding), it creates a square jaw appearance. Botox relaxes the muscle, causing it to gradually atrophy and slim down over 4-8 weeks, creating a more V-shaped face contour.

    How many units of Botox are needed for masseter slimming?

    Typically 25-50 units per side (50-100 units total) depending on muscle size and desired result. Patients with very strong masseters may need up to 60 units per side. The dosage is determined during consultation by palpating the muscle while the patient clenches.

    How long until I see jawline slimming results?

    Unlike wrinkle Botox which works in 3-5 days, masseter slimming takes longer because the muscle needs time to atrophy. Initial softening appears at 2-4 weeks. Visible slimming at 4-8 weeks. Peak results at 8-12 weeks. Most patients need 2-3 sessions for optimal slimming.

    How often do I need masseter Botox maintenance?

    Initial treatments are spaced 3-4 months apart. After 2-3 sessions, the muscle is sufficiently weakened that many patients can extend to 6-8 month intervals. Some patients eventually need only annual maintenance.

    Can I combine masseter Botox with Lipo X for enhanced results?

    Yes, combining masseter Botox with Lipo Lifting X in the submental (under-chin) area can dramatically improve jawline definition. Botox slims the jaw muscle while Lipo X reduces submental fat. This dual approach creates a more defined lower face contour.

    Will masseter Botox affect my ability to eat?

    No. The masseter is only one of several chewing muscles. You may notice slight jaw fatigue when chewing tough foods in the first 1-2 weeks, but this resolves quickly. Normal eating is unaffected throughout treatment.

    How much does masseter Botox cost in Bangkok?

    At VERZO CLINIC, masseter Botox ranges from 1,000-6,000 THB total depending on the brand and number of units. Hutox offers the most affordable option while Allergan provides the longest duration.

    Am I a good candidate for masseter Botox?

    Ideal candidates have a noticeably square jaw caused by muscle bulk (not bone structure). To check: place your hands on your jaw and clench — if you feel a significant bulge, masseter Botox can help. If the squareness is from bone, other options may be more appropriate.

    Blog
    Botox Deep-Dive

    Botox for Jawline Slimming

    The 15-minute V-shape treatment. How masseter Botox gradually transforms a square jaw into a more refined contour — a frequently requested treatment at VERZO CLINIC.

    Dr. Waleerat April 2026 9 min read

    How Masseter Botox Works

    The masseter is one of the strongest muscles in the body — designed for chewing. When overdeveloped from genetics, bruxism (teeth grinding), or habitual gum chewing, it creates a wide, square jawline. Botox injected into the masseter relaxes the muscle, and over weeks of reduced activity, the muscle gradually decreases in size — just as any muscle does when you stop exercising it.

    The result is a slimmer, more V-shaped face contour. The treatment takes just 15 minutes, involves 3-5 injection points per side, and requires minimal downtime.

    Ideal Candidates

    • Noticeably square jaw caused by muscle bulk (not bone)
    • Visible masseter bulge when clenching teeth
    • Teeth grinding (bruxism) causing jaw muscle enlargement
    • Desire for a slimmer, more V-shaped facial contour
    • Both men and women — increasingly popular with male patients

    "The self-test is simple: place your fingers on the angle of your jaw and clench. If you feel a strong muscle bulge, you will likely see good results from masseter Botox. If the squareness is from bone structure, we discuss other options."

    — Dr. Waleerat Thaweebanchongsin, VERZO CLINIC

    Slimming Timeline

    Week 1-2
    Muscle begins to relax. You may notice reduced jaw clenching and less teeth grinding at night.
    Week 3-4
    Initial softening of the jawline visible. The muscle feels less prominent when you clench.
    Week 6-8
    Noticeable V-shape improvement. Friends and family may comment that your face looks slimmer.
    Week 8-12
    Peak results. Maximum muscle atrophy achieved for this session. Jawline is visibly refined.
    Month 4-6
    Effect begins to gradually wear off. Schedule next session before the muscle fully recovers for cumulative results.

    Units Needed: 25-50 per Side

    Muscle SizeUnits per SideTotal
    Mild enlargement25-3050-60
    Moderate enlargement35-4570-90
    Severe enlargement50-60100-120

    Maintenance Schedule

    The key to masseter Botox is cumulative treatment. Each session weakens the muscle further, and over time the muscle atrophies to a smaller baseline size.

    Session 1Initial treatmentBaseline assessment and first injection
    Session 23-4 months laterReinforce before muscle fully recovers
    Session 34-5 months laterMuscle significantly smaller, may reduce units
    Maintenance6-12 monthsAnnual or bi-annual touch-ups to sustain

    Enhanced Results: Combo with Lipo X

    For patients who want dramatic jawline improvement, combining masseter Botox with Lipo Lifting X in the submental area creates a comprehensive lower face transformation. Botox slims the jaw muscle while Lipo X reduces double chin fat — together defining the jawline from both angles.

    Both treatments can be performed in the same visit. The combination is a frequent request for patients seeking V-shape improvement at VERZO CLINIC.

    Pricing

    TreatmentHutoxAllergan
    Masseter only (mild, ~60u)500-720 THB1,080-1,500 THB
    Masseter only (moderate, ~80u)640-960 THB1,440-2,000 THB
    Masseter only (severe, ~100u)800-1,200 THB1,800-2,500 THB
    Masseter + Lipo X chin comboFrom 16,000 THBFrom 20,000 THB

    Send a selfie via LINE for a preliminary unit and pricing estimate before visiting.

    Frequently Asked Questions

    How does masseter Botox create a V-shape?

    Botox relaxes the masseter chewing muscle, causing gradual atrophy and slimming over 4-8 weeks for a V-shaped contour.

    How many units needed?

    25-50 units per side (50-100 total). Strong masseters may need up to 60 per side.

    How long until results?

    Initial softening at 2-4 weeks. Visible slimming at 4-8 weeks. Peak at 8-12 weeks.

    How often for maintenance?

    Initial: every 3-4 months. After 2-3 sessions: every 6-8 months. Eventually annual.

    Can I combine with Lipo X?

    Yes, Botox for jaw + Lipo X threads for the chin contour create a clearer jawline.

    Will it affect eating?

    No. Slight jaw fatigue with tough foods for 1-2 weeks only. Normal eating unaffected.

    How much does it cost?

    From 1,000-6,000 THB total depending on brand and units.

    Am I a good candidate?

    If your square jaw is from muscle (not bone). Clench and feel for bulge. Muscle-based squareness responds well.

    Want a Slimmer Jawline?

    Send a front-facing selfie via LINE for a free preliminary assessment. Dr. Waleerat will estimate your units and expected results.

    VERZO CLINIC, Sukhumvit Road near BTS Ekkamai. Open daily 10:00-19:00.

    Medical Disclaimer

    Results vary depending on individual skin and body conditions.

    Please consult a physician before treatment.

    สอบถามทาง LINE

    VERZO CLINIC — 988-990-992 Sukhumvit Road, Ekkamai, Bangkok 10110, Thailand. เปิดทุกวัน 10:00–19:00 น. ให้บริการภาษาไทย อังกฤษ ญี่ปุ่น และจีน

    ติดต่อ: LINE @verzo · WhatsApp +66 95 326 6644