Drooping mouth corners are one of the main reasons people look ‘bitter,’ ‘unhappy,’ or ‘old.’ The position of the mouth corners is determined by the balance of two muscle groups — the levator anguli oris (lifting the corner up) and the depressor anguli oris (pulling it down). When the depressor anguli oris (DAO) is overactive, the corners are constantly pulled downward, making the face look displeased, bitter, or tired even at rest. Causes: (1) Aging — long-term DAO contraction with reduced skin elasticity gradually droops the corners. (2) Expression habits — habitual lip pursing, teeth clenching, or melancholic expressions overuse the DAO. (3) Facial structure — those with mandibular retrusion or a short chin are more prone to mouth corner drooping. (4) Bone resorption — the anterolateral mandible absorbs with age, the DAO attachment point descends, and the corners follow. Rappoel Dermatology near Gangnam Station, Seoul, uses Coretox — precise DAO relaxation, 5-minute treatment, with corners naturally lifting in 3-5 days for a warm, approachable smile.
Technical Advantages of Coretox Mouth Corner Lift
- Precise DAO relaxation: After injection into the DAO, Coretox blocks neuromuscular signaling, relaxing the overactive depressor — the corners are no longer pulled down, the levator’s upward force naturally dominates, and the corners lift
- Coretox Korean-origin high-purity advantage: Coretox is 150kDa high-purity toxin with complex proteins removed, reducing antibody and resistance risk. The mouth is a delicate expression area — high-purity formulation spreads less, reducing risk of spreading to the depressor labii inferioris and mentalis causing lower lip stiffness
- Fast onset (2-3 days): Coretox clinical data shows average onset of 2-3 days — DAO begins relaxing at 3-5 days, corners naturally lift, optimal at two weeks
- Natural lift without stiffness: Coretox only relaxes the DAO’s downward pull, without affecting the levator’s upward force — smiling remains natural, corners lift upward without stiffness
- Minimally invasive with no recovery: Only 2-4 injection points, completed in 5 minutes — pinholes close in 1 day, no surgery or recovery, doable on a lunch break
Treatment Strategies for Different Mouth Corner Issues
- Pure drooping corners type: Clearly drooping corners at rest, bitter look. Strategy: Coretox 4-8 units per side in 1-2 points at the DAO — corners naturally lift 2-3mm after relaxation, bitter look improves
- Drooping corners + marionette lines type: Drooping with marionette lines (grooves from corner to chin). Strategy: Coretox DAO relaxation (4-8 units per side) + HA marionette line filler (0.3-0.5ml per side) — Botox lifts corners, filler smooths grooves, dual improvement
- Drooping corners + nasolabial fold type: Drooping with deepening nasolabial folds. Strategy: Coretox DAO (4-8 units per side) + HA nasolabial fold filler (0.5-1.0ml per side) — lift corners + smooth folds, overall mid-lower face rejuvenation
- Drooping corners + chin retrusion type: Short, retruded chin causing corner drooping. Strategy: Coretox DAO (4-8 units per side) + HA chin filler (1-2ml) — Botox lifts corners, filler elongates the chin, overall lower-third proportion improves
- Asymmetric type (unilateral drooping): One corner clearly lower than the other. Strategy: Inject Coretox only on the lower side (4-6 units) — symmetry restored after relaxation
Rappoel Mouth Corner Coretox Treatment Protocol
- Corner assessment and plan design (5 min): Patient relaxes face, smiles, and purses lips to assess corner position and DAO activity → check marionette and nasolabial lines → photograph → establish injection plan (dosage, points)
- Disinfection preparation (2 min): Corner area cleansing → alcohol swab disinfection → mark 1-2 injection points per side (mid-DAO, avoiding the depressor labii inferioris and facial artery)
- Precise injection (3 min): 32G ultra-fine needle → 3-5 units Coretox per point → intramuscular depth → 4-8 units total per side → gentle pressure after injection
- Immediate assessment and guidance (3 min): Patient smiles to confirm corner improvement → post-care instructions (avoid lying flat and massaging for 4 hours, avoid strenuous exercise for 24 hours, avoid high-heat for 1 week, avoid testing by forceful pursing) → 2-week follow-up
The mouth corner Coretox injection takes about 10 minutes, with onset at 2-3 days, visibly lifted corners at 5-7 days, lasting 3-5 months. Located 3 minutes from Gangnam Station Exit 10, with seamless English and Chinese consultation.
Frequently Asked Questions
How long do Coretox mouth corner lift results last? How often do I need injections?
Coretox mouth corner lift typically lasts 3-5 months — the mouth is frequently active (speech, smiling, eating), but the dose is small (4-8 units per side) and the DAO is a fixed position, providing relatively stable duration. Rappoel recommends: injection every 4-5 months for maintenance. Benefits of regular treatment: (1) Continuous suppression of DAO downward pull prevents corners from progressively drooping. (2) After prolonged relaxation, baseline muscle tone decreases, allowing some patients to extend to 5-6 month intervals. (3) When combined with HA marionette or nasolabial fold filler, relaxing the DAO first makes filler results better and more natural. Patients with clearly drooping corners and marionette lines should consider Botox + HA combination.
Will mouth corner Coretox affect smiling or eating? Will my lips be crooked?
With proper dosing and placement there’s no effect on smiling or eating, and no lip crookedness — the key is dose and placement control: (1) Dose — standard corner dose is 4-8 units per side, only relaxing the DAO, far below the threshold affecting eating. (2) Placement — Rappoel precisely injects the mid-DAO, avoiding the depressor labii inferioris and orbicularis oris — muscles controlling lower lip closure and movement remain unaffected. (3) Effect — after proper treatment, smiling, speech, and eating remain completely normal — corners are simply no longer pulled down, smiling naturally lifts. (4) Risk — if excess spreads to the depressor labii inferioris, temporary lower lip stiffness or asymmetric smile may occur, resolving naturally in 4-6 weeks. Rappoel starts standard, preferring under-treatment.
Does Coretox really work for drooping mouth corners? Shouldn’t I get surgical lifting?
Yes — one of the core causes of drooping corners is DAO overactivity pulling them down: (1) Muscle-type drooping (overactive DAO) → Coretox works best — corners naturally lift 2-3mm after relaxation, bitter look visibly improves. (2) Skin laxity-type drooping (clearly lax skin) → Coretox has some but limited effect; recommend combining with energy devices (ultrasound or RF) for skin tightening, or thread lifting. (3) Bone resorption-type drooping (mandibular absorption) → Coretox has limited effect; recommend HA chin filler to rebuild skeletal support. (4) Severe skin laxity → may need surgery (corner lift surgery), but non-surgical options first. Rappoel assesses the cause during consultation; most drooping can be improved non-surgically with Coretox.
How fast does mouth corner Coretox work? When is the effect most visible?
Coretox mouth corner treatment timeline: (1) 2-3 days — onset begins, corner position starts lifting at rest. (2) 5-7 days — corners visibly lifted, bitter look significantly reduced. (3) 2 weeks — optimal results, corners naturally upward, smile warmer and more approachable. (4) 3-5 months — effect gradually diminishes, DAO activity returns, re-injection possible. Note: avoid lying flat or massaging for 4 hours after injection (prevent medication migration); avoid testing by forceful pursing or pulling down for 1 week (accelerates metabolism). For optimal state before important events, inject 2 weeks in advance.
Besides Coretox, what else does drooping mouth corner treatment need?
Complete treatment depends on cause and severity: (1) Pure muscle type — overactive DAO, Coretox 4-8 units per side effectively lifts. (2) Drooping + marionette lines — Coretox + HA marionette line filler (0.3-0.5ml per side), dual improvement. (3) Drooping + nasolabial folds — Coretox + HA nasolabial fold filler, overall mid-lower face rejuvenation. (4) Drooping + chin retrusion — Coretox + HA chin filler, rebuilding lower-third proportion. (5) Severe skin laxity — may need thread lifting or surgery. Rappoel assesses muscle, skin, and bone layers during consultation; in most cases, Coretox + HA combination works best.
Drooping mouth corners making you look bitter? Rappoel Coretox mouth corner lift — 5 minutes for a naturally upward smile!
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