Double chin (submental fullness) is one of the most frustrating facial contour concerns — not because it’s the hardest to solve, but because it’s everywhere: from the front your face looks rounder, from the side your chin and neck merge into one line, and the 45-degree angle is the most aging double-chin perspective. The causes of double chin are more complex than most realize: (1) Submental fat pad enlargement — after age 30, even with stable weight, fat distribution shifts toward the face and neck. (2) Platysma muscle laxity — the platysma is a muscular curtain wrapping from chin to collarbone; age-related laxity allows fat pad descent and accumulation. (3) Mandibular retrusion — congenital or age-related insufficient mandibular development leaves the submental area without bony support. (4) Skin laxity — loose neck skin loses its ability to contain the fat pad. (5) Postural double chin — prolonged phone-browsing (Tech Neck) chronically compresses the submental area, concentrating fat and laxity. Rappoel Dermatology near Gangnam Station, Seoul, uses the Onda system from Italy’s Deeka — the world’s only 2.45GHz microwave lipolysis platform — to selectively heat and ablate submental fat, offering a non-surgical contour reshaping solution.
Onda Microwave Lipolysis — Why It Selectively Ablates Fat
- 2.45GHz microwave — frequency tailored for fat: Onda uses 2.45GHz microwaves (same frequency as household microwave ovens but with entirely different power and focusing), which have a fat-selective absorption property in human tissue — fat absorbs 2.45GHz microwaves 3-5x more than skin and muscle, meaning microwave energy passes through skin with minimal absorption and concentrates as thermal energy only upon reaching the fat layer
- Blue-core cooling protects the epidermis: The Onda handpiece features an integrated blue-core cooling system that lowers epidermal temperature to 15-20°C before microwave emission — ensuring the skin is completely protected from thermal damage while all thermal effects concentrate in the subcutaneous fat layer
- 45°C adipocyte apoptosis threshold: Fat cells are far less heat-tolerant than other cell types — when fat layer temperature reaches 45°C for 15-20 minutes, adipocytes undergo irreversible apoptosis (programmed cell death) — cell membranes remain intact but intracellular lipid droplets begin breaking down, subsequently phagocytosed by macrophages and metabolized via the lymphatic system. Unlike high-temperature necrosis (>60°C), apoptosis doesn’t trigger intense inflammation or tissue scarring
- Dual collagen contraction: Microwave heating simultaneously acts on the deep dermis and SMAS fascia — when temperature reaches 50-55°C, collagen triple-helix structures unfold and re-crosslink, contracting for a skin-tightening effect. This means Onda tightens loose neck skin while ablating fat — lipolysis and skin tightening in one step
- Coolwaves bilateral handpiece design: Onda’s Coolwaves handpiece is designed for bilateral jawline adaptation — conforming perfectly to the submental curve to ensure uniform microwave coverage across the entire fat pad without gaps
Onda Submental Lipolysis vs Other Fat Reduction Methods
- Onda vs Cryolipolysis (CoolSculpting/Zeltiq): Cryolipolysis induces fat cell crystallization apoptosis at -11°C, but the submental area is small and curved, making applicator fit challenging — Onda’s microwave handpiece adapts precisely to any jawline curvature. Cryolipolysis reduces 20-25% fat per session, requiring 2-3 sessions; Onda reduces 30-40% per session, typically 1-2 sessions sufficient
- Onda vs Injection Lipolysis (Kybella/Deoxycholic acid): Injection lipolysis uses deoxycholic acid to disrupt fat cell membranes, but requires multiple sessions (3-6), significant post-injection swelling (3-5 days), and uncontrolled injection depth with marginal nerve injury risk. Onda is completely non-invasive, no downtime, and microwave heating uniformity far exceeds point-by-point injection destruction
- Onda vs Submental Liposuction: Surgical liposuction is most thorough (60-70% fat reduction in one session), but requires incisions, 5-7 days compression dressing, with infection and asymmetry risks. Onda suits mild-to-moderate double chin or those preferring non-surgical approaches — gradual but trauma-free
- Onda vs Thermage/Ultherapy: Thermage and Ultherapy primarily tighten skin rather than dissolve fat — limited for fat-dominant double chins. Onda provides dual lipolysis + skin tightening, more effective for fat-type double chins
Rappoel Onda Submental Lipolysis Treatment Protocol
- Submental assessment and plan design (15 min): Evaluate double chin etiology (fat-dominant / laxity-dominant / skeletal / mixed) → pinch test confirming fat thickness → mark Onda handpiece placement zones → establish 1-2 session treatment plan (4-6 week intervals)
- Blue-core cooling activation and handpiece positioning (5 min): Onda handpiece blue-core cooling system activated → handpiece conforms to submental curve and secured → confirm no air-gap between handpiece and skin
- Microwave lipolysis treatment (35-40 min): 2.45GHz microwaves emitted continuously under blue-core cooling protection → patient feels warmth but not burning in submental area → physician repositions handpiece every 5 minutes for uniform coverage → infrared temperature monitoring ensures epidermis stays below 35°C while fat layer reaches 45°C
- Immediate massage and sculpting (5 min): Post-treatment gentle submental massage to promote fat metabolism and lymphatic drainage → immediate post-treatment photography → post-care instructions provided
Onda submental lipolysis’s gradual results surprise many clients — jawline clarity begins emerging 2-4 weeks after the first session as apoptotic fat cells are processed by macrophages and lymphatic system. Results compound with the second session for the ideal contour. No surgery, no injections, no downtime — just 45 minutes on the treatment bed. Located 3 minutes from Gangnam Station Exit 10, with seamless English and Chinese consultation.
Frequently Asked Questions
How many Onda sessions are needed to see results for double chin?
Most people begin seeing jawline clarity 2-4 weeks after the first session — because apoptotic fat cells require 2-4 weeks for macrophage phagocytosis and lymphatic metabolism. The first session typically reduces submental fat by 30-40%; for mild double chin (pinch thickness <2cm), one session achieves satisfactory results. Moderate double chin (2-3cm) recommends 2 sessions; severe (>3cm or with significant skin laxity) may require 3 sessions or combination with thread lifting. Sessions are spaced 4-6 weeks apart — waiting for the full effect of the previous session before assessing need for additional treatment. Rappoel’s approach: 4-week post-treatment follow-up with comparison photos to determine the next step based on actual fat reduction.
Is Onda microwave lipolysis painful? Is anesthesia needed?
Onda’s treatment sensation is warm but not painful — the blue-core cooling system maintains epidermal temperature at 15-20°C ensuring skin is completely shielded from thermal stimulation, while 2.45GHz microwaves selectively concentrate thermal effects in the fat layer. Most patients describe a continuous warmth in the submental area (similar to a warm compress), with mild heat sensation in the latter half of treatment that is entirely tolerable. No anesthesia needed — no needles, no incisions, no invasion. Warmth disappears immediately after treatment; mild redness may occur (resolves within 30 minutes). Compared to cryolipolysis’s pulling-freezing sensation and injection lipolysis’s swelling pain, Onda offers the highest comfort level.
Will skin sag after Onda lipolysis? What if fat is gone but skin is loose?
This is Onda’s greatest advantage over other non-surgical lipolysis methods — Onda does not cause post-treatment skin laxity. Reason: 2.45GHz microwaves heat not only the fat layer but also the deep dermis and SMAS fascia — when temperature reaches 50-55°C, collagen fibers undergo immediate contraction and subsequent remodeling, achieving simultaneous skin tightening. Clinical data shows Onda treatment improves submental skin firmness by an average of 15-20%. Cryolipolysis and injection lipolysis only destroy fat without contracting skin — potentially causing a deflated-bag effect in those with pre-existing skin laxity. For severe skin laxity double chin, Rappoel may recommend Onda + thread lifting combination — Onda for fat removal, thread lifting for neck skin elevation.
What are the post-treatment care instructions after Onda submental lipolysis?
Post-care is very simple: (1) Avoid high-temperature environments (sauna, hot bath, intense exercise) for 24 hours — the fat layer remains metabolically active post-heating, external heat may worsen swelling. (2) Gently massage the submental area for 5 minutes daily for 3 days — promoting lymphatic drainage and metabolite elimination. (3) Drink plenty of water (2L+ daily) — assisting the lymphatic system in transporting apoptotic fat cell metabolites. (4) Avoid vigorous neck pressure and friction for 1-2 weeks. (5) No special dietary restrictions, but reducing high-salt foods (minimizing water retention and swelling) is recommended. Recovery: mild redness and warmth may persist on treatment day, slight swelling days 1-2, normal by day 3. Daily life and work are completely unaffected.
Will double chin return after Onda? Can fat grow back?
Onda-destroyed fat cells are permanently eliminated — apoptotic adipocytes do not regenerate. However, remaining fat cells can still enlarge with weight gain. Post-treatment maintenance isn’t about worrying whether fat returns, but keeping weight stable. If weight increases by 5kg+ post-treatment, submental fullness may reappear — but typically not to pre-treatment levels (since total fat cell count has been reduced by 30-40%). Rappoel’s recommendation: maintain weight with healthy diet and moderate exercise for long-lasting results. For metabolic disorder-related obesity (e.g., hypothyroidism), the underlying condition must be treated first. Onda is ideal for those with normal BMI but stubborn local fat — it’s a contouring tool, not a weight-loss method.
Double chin hiding your side profile and forcing you to find angles in photos? Rappoel Onda microwave lipolysis — 45 minutes non-surgical double chin elimination!
📍 77, Seocho-daero, Seocho-gu, Seoul, South Korea
🕐 Mon–Fri 10:00–19:00 · Sat 10:00–17:00
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