The glabellar frown lines — the vertical "11s" between the eyebrows — are among the most common cosmetic treatment requests globally. Korean clinics offer precise Botox dosing, filler combinations, and occasional surgical corrections for severe cases. This guide covers the comprehensive approach.
The anatomy
Muscles producing 11s
- Corrugator supercilii muscles (the "frowning" muscles).
- Procerus muscle (between brows, pulling brow down).
- Depressor supercilii.
- Combined action creates 11s when activated.
How lines develop
- Repeated muscle contraction causes skin folding.
- Habit and expression patterns matter.
- Static lines develop over years.
- Genetic factors affect skin response.
- Sun damage compounds.
Static vs. dynamic lines
- Dynamic lines — visible only with expression.
- Static lines — visible at rest.
- Treatment approach differs.
- Earlier treatment prevents static formation.
Botox treatment
Standard injection
- 5 injection points typically.
- Each corrugator muscle (2 sites each).
- Procerus (1 central site).
- Total: 16–24 units typical Botox/Xeomin/Botulax.
- Adjust for severity.
Korean dosing approach
- Generally lower doses than Western standards.
- Conservative starting dose.
- Aim for natural movement preservation.
- Touch-up at 2 weeks if needed.
- Avoid frozen-look results.
Effect timeline
- Days 1–3: no change.
- Days 4–7: effect onset.
- Day 14: full effect.
- Months 3–4: gradual return.
- Repeat at 4 months typical.
Filler treatment
For static lines
- Hyaluronic acid filler placed in lines.
- Specific filler type (low G-prime, fine).
- Conservative volumes.
- Particular vascular caution.
- Combined with Botox (sequence matters).
Vascular complications risk
- Glabella is highest-risk filler injection area.
- Major arteries supply forehead and eye.
- Improper injection can cause blindness.
- Cannula technique mandatory.
- Aspiration before injection.
- Experienced injector essential.
Hyaluronidase availability
- Required at injecting clinic.
- Emergency reversal capability.
- Time-sensitive in vascular complication.
Combination approach (most effective)
Standard sequence
- Botox first.
- Wait 2 weeks for effect.
- Filler if static lines remain.
- Combination addresses both dynamic and static.
- Best long-term results.
Typical schedule
- Botox every 4 months.
- Filler every 9–12 months as needed.
- Skin booster series support.
- Annual maintenance protocol.
Surgical options for severe cases
Corrugator excision (rare)
- Permanent removal of frowning muscles.
- Combined with brow lift typically.
- Open or endoscopic approach.
- Substantial recovery.
- Reserved for severe cases.
Brow lift with deep work
- Endoscopic brow lift.
- Corrugator weakening during procedure.
- Combined with skin smoothing.
- Major surgical intervention.
Fat grafting
- Permanent volume restoration.
- Some collagen stimulation.
- Fat survival variable.
- Adjunct rather than primary treatment.
Korean approach refinements
Conservative dosing
- Lower initial doses than Western standards typical.
- Patient adjustment during touch-up.
- Aim for "movement preserved" rather than fully frozen.
- Natural appearance prioritized.
Gradual approach
- Start with Botox alone.
- Add filler if needed after Botox effect assessed.
- Skin booster series to support.
- Multi-modal long-term plan.
Brow position consideration
- Glabella treatment can affect brow position.
- Procerus relaxation may slightly raise brows.
- Coordinate with brow shape goals.
- Avoid unintended brow drop.
Common mistakes to avoid
Excessive Botox
- "Frozen" appearance.
- Loss of natural expression.
- Brow drop possible.
- Unnatural look.
Filler placement errors
- Vascular complications.
- Visible product or lumps.
- Asymmetric correction.
- Excessive volume.
Wrong sequence
- Filler before Botox: harder to assess static lines.
- Filler immediately after Botox: assessment incomplete.
- Wait 2 weeks between for proper assessment.
Pricing in Korean clinics 2026
- Glabella Botox alone: ₩100,000–₩300,000 per session.
- Glabella filler alone: ₩400,000–₩800,000 per session.
- Combined treatment: ₩500,000–₩1,000,000.
- Premium clinics or brands higher.
- Maintenance schedule: ~₩300,000–₩900,000 annually.
Patient considerations
For prevention (20s–early 30s)
- "Baby Botox" — minimal doses.
- Prevent line formation.
- Annual maintenance.
- Skin care emphasis.
For treatment (30s–40s)
- Standard Botox dosing.
- Filler if static lines develop.
- Combined approach.
- Maintenance protocol.
For aging (50s+)
- Possible surgical considerations.
- Brow lift with deep work.
- Comprehensive rejuvenation.
- Skin quality investment.
Realistic expectations
- Significant improvement of dynamic lines.
- Static lines partial improvement only.
- Repeat treatments necessary.
- Some return between sessions.
- Cumulative improvement over time.
- Cannot eliminate lines completely.
What patients should know
- Earlier treatment prevents permanent lines.
- Combination approach often best for static lines.
- Vascular caution important for filler.
- Conservative approach ages better.
- Surgeon/injector experience matters.
- Long-term commitment to maintenance.
Side effects
- Mild bruising at injection sites.
- Headache possible 24 hours.
- Brow drop (rare) if technique error.
- Asymmetric effect (correctable at touch-up).
- Allergic reaction (rare).
The honest framing
Glabella frown lines treatment is straightforward in principle but technically demanding in execution — particularly filler placement, given vascular complication risks. The patients who get good outcomes start treatment early (30s) for prevention, accept gradual cumulative improvement, work with experienced injectors, and commit to maintenance schedules. The patients who pursue aggressive single-session correction often look frozen or face complications. Conservative dosing, combination approach, and ongoing maintenance produce the most natural-looking, sustainable results.