Thermage FLX vs Onda Lifting Comparison 2026 — RF vs Microwave
Thermage FLX and Onda Coolwaves represent two fundamentally different energy-based approaches to non-surgical skin tightening and body contouring. Thermage FLX uses monopolar radiofrequency (RF) to heat the dermis volumetrically, producing comprehensive skin tightening and firming. Onda uses Coolwaves (2.45GHz microwave) technology to selectively target fat cells, connective tissue, and the dermal layer at three distinct depths. RE:BERRY Gangnam is certified for both devices — Solta Medical (Thermage) and DEKA (Onda) — allowing Dr. Yoon-Gon Ryu to recommend the optimal treatment based on your specific goals. Thermage 600 shots from ₩1,990,000. Onda 40kJ + Titanium 40kJ from ₩720,000.
Thermage FLX vs Onda Coolwaves: What Is the Difference?
Thermage FLX uses monopolar radiofrequency (RF) to deliver volumetric dermal heating across a large area, primarily tightening and firming the skin envelope. Onda uses Coolwaves microwave technology at 2.45GHz to selectively target three distinct tissue layers: shallow dermis (skin tightening), deep dermis and fibrous septa (cellulite reduction), and subcutaneous fat (localized fat reduction). In simple terms: Thermage is the gold standard for overall skin tightening, while Onda offers versatile multi-depth treatment including fat reduction capabilities that Thermage does not have.
The Thermage vs Onda decision represents a common dilemma for patients seeking non-surgical lifting and contouring in Korea. While both are energy-based devices that stimulate collagen production, they use entirely different physics, target different tissue depths, and are optimized for different clinical outcomes. Understanding these differences is essential for choosing the right treatment. Thermage FLX is the latest generation of the Thermage platform, which has been the gold standard in monopolar radiofrequency skin tightening for over two decades. The device delivers RF energy through a 4.0cm2 treatment tip (the largest in its class), creating volumetric heating throughout the dermis. The AccuREP (Accurate REPeat) technology automatically measures tissue impedance with each pulse and adjusts energy delivery accordingly, ensuring consistent heating across different tissue types and thicknesses. The vibrating handpiece (Total Tip 2.0) disperses surface heat, improving both comfort and safety. The biological mechanism is straightforward: RF energy heats dermal collagen to 65-75 degrees Celsius, causing immediate collagen contraction (visible tightening) followed by a wound-healing response that produces new collagen over 3-6 months. Clinical evidence is extensive — a systematic review by Goldie et al. (J Cosmet Dermatol 2021; doi:10.1111/jocd.13791) analyzed 37 studies comprising over 2,000 patients and confirmed statistically significant skin tightening outcomes with monopolar RF. The study reported 87% patient satisfaction at 6 months post-treatment. Onda Coolwaves by DEKA represents a newer generation of body contouring technology using microwave energy at 2.45GHz. Unlike RF, which heats all tissue indiscriminately along its current path, microwaves at this specific frequency are selectively absorbed by water molecules within fat cells and connective tissue. This selective absorption means Onda can heat target tissues while the integrated cooling system protects the skin surface. The device offers three handpieces: Shallow (targets dermis for skin tightening), Deep (targets fibrous septa for cellulite reduction), and Deeper (targets subcutaneous fat for localized fat reduction and skin laxity improvement). A multicenter study by Bacci et al. (J Cosmet Dermatol 2020; doi:10.1111/jocd.13337) demonstrated statistically significant circumference reduction and skin tightening following Onda Coolwaves treatment, with 93% of patients reporting improvement in body contour. Key clinical differences: Thermage excels at facial skin tightening, producing a firmer, smoother skin surface with minimal treatment of underlying fat. Its 4.0cm2 tip and volumetric heating pattern make it ideal for large areas of the face and neck. Onda excels at combined tightening and contouring — its microwave selectivity allows effective fat reduction alongside skin tightening, making it particularly effective for the jawline (double chin), body (abdomen, flanks, arms, thighs), and areas where both skin laxity and excess fat are concerns. At RE:BERRY Gangnam, Dr. Yoon-Gon Ryu often combines both technologies in a single protocol: Thermage for the upper face (where pure tightening is desired) and Onda for the lower face and body (where fat reduction is also beneficial). Additionally, both Thermage and Onda can be paired with Ultherapy Prime (SMAS-depth lifting), Sofwave (mid-dermis tightening), Revinas (micro-pulse stimulation), and Soprano Titanium for comprehensive multi-layer rejuvenation.
Thermage & Onda Before & After at RE:BERRY Gangnam
Actual patient results from RE:BERRY Gangnam. Individual results may vary.
How We Determine the Right Device at RE:BERRY Gangnam
A four-step consultation and treatment protocol by Dr. Yoon-Gon Ryu.
Step 1: Comprehensive Assessment
Dr. Yoon-Gon Ryu evaluates your skin laxity, subcutaneous fat distribution, tissue thickness, and collagen quality across the face and body. He assesses which areas primarily need skin tightening (favoring Thermage), which areas need fat reduction combined with tightening (favoring Onda), and which areas would benefit from deep structural lifting (potentially adding Ultherapy). This data-driven assessment ensures the device recommendation is based on your specific anatomy, not device availability.
Step 2: Treatment Plan & Device Selection
Based on the assessment, Dr. Ryu recommends one of four approaches: (1) Thermage FLX alone — for patients whose primary concern is overall skin tightening without fat reduction. (2) Onda alone — for patients who need both tightening and contouring, especially jawline/body areas. (3) Thermage + Onda combination — Thermage for upper face, Onda for lower face/body. (4) Multi-device protocol — adding Ultherapy Prime for SMAS-depth lifting to either Thermage or Onda. He explains pricing, expected outcomes, and realistic timelines.
Step 3: Treatment Delivery
For Thermage FLX: the 4.0cm2 Total Tip 2.0 delivers monopolar RF across the full treatment area. AccuREP technology automatically calibrates energy per pulse. Vibrating handpiece improves comfort. Treatment takes 45-60 minutes for full face. For Onda: the appropriate handpiece (Shallow/Deep/Deeper) is selected based on target tissue. The integrated cooling system protects the skin surface while microwave energy heats the target layer. Treatment takes 30-60 minutes depending on area size. Both treatments are walk-in, walk-out with zero downtime.
Step 4: Post-Treatment & Follow-Up
Both Thermage and Onda require zero downtime. Mild redness resolves within 30-60 minutes (Thermage) or 1-2 hours (Onda). Results develop progressively: Thermage shows initial tightening immediately with peak results at 3-6 months. Onda shows initial improvements within 2-4 weeks with optimal results at 2-3 months. Dr. Ryu recommends a 3-month follow-up to assess results and determine if maintenance treatments or complementary procedures would further optimize your outcome.
When to Choose Thermage vs Onda
- Choose Thermage FLX If: Your primary concern is overall skin laxity and firmness — especially upper face, periorbital area, forehead, and neck. Thermage’s volumetric RF heating is the gold standard for comprehensive dermal tightening with 20+ years of clinical evidence and FDA clearance.
- Choose Onda If: You need both skin tightening AND fat reduction or cellulite improvement. Onda’s three-depth microwave technology can address skin laxity, fibrous cellulite, and localized fat in a single treatment — making it superior for lower face (double chin), jawline contouring, and body areas (abdomen, flanks, arms, thighs).
- Choose Both If: You want comprehensive face and body rejuvenation. Thermage for upper face tightening + Onda for lower face contouring and body sculpting addresses the full spectrum of concerns. At RE:BERRY Gangnam, the Onda 40kJ + Titanium 40kJ package (₩720,000) is often paired with Thermage for a complete protocol.
- Thermage Advantage — AccuREP Technology: Thermage FLX’s AccuREP system measures tissue impedance with every pulse and automatically adjusts energy delivery. This produces consistent heating across different tissue types and facial zones, eliminating hot spots and ensuring uniform tightening.
- Onda Advantage — Selective Microwave Absorption: Coolwaves at 2.45GHz are preferentially absorbed by water molecules in fat cells, allowing selective heating of subcutaneous fat while the cooling system protects the skin. No RF device can achieve this fat-selective targeting without also heating all intervening tissues.
- RE:BERRY Multi-Device Approach: With 30+ devices including Ultherapy Prime, Sofwave, Revinas, and Soprano Titanium, Dr. Ryu can customize multi-layer protocols that address every tissue depth in a single visit.
| Timeline | What to Expect |
|---|---|
| Day 0 | Both treatments complete. Mild redness resolves within 30-120 minutes. Zero downtime — return to normal activities immediately. |
| Week 1-2 | Thermage: initial collagen contraction produces visible tightening. Onda: treated fat cells begin apoptosis process. |
| Month 1-2 | Progressive tightening from both devices. Onda-treated areas show circumference reduction as damaged fat cells are cleared by lymphatic system. |
| Month 3-4 | Thermage reaches peak tightening as new collagen matures. Onda contouring results stabilize. |
| Month 6+ | Combined results fully mature. Maintenance sessions recommended at 6-12 month intervals depending on individual response. |
Thermage FLX vs Onda Coolwaves: Complete Specification Comparison
| Feature | Thermage FLX | Onda Coolwaves |
|---|---|---|
| Energy Type | Monopolar RF (6.78MHz) | Microwave (2.45GHz Coolwaves) |
| Manufacturer | Solta Medical (Bausch Health) | DEKA (Italy) |
| FDA/CE Status | FDA Cleared | CE Marked |
| Target Depth | Dermis (0.5-3mm) | 3 depths: Shallow (dermis), Deep (septa), Deeper (fat) |
| Primary Effect | Skin Tightening & Firming | Tightening + Fat Reduction + Cellulite |
| Fat Reduction | Minimal | ✓ |
| Tip Size | 4.0cm² (largest) | Various handpieces |
| Auto Calibration | AccuREP (impedance-based) | Integrated cooling system |
| Treatment Time | 45-60 min (face) | 30-60 min (face/body) |
| Comfort | Vibrating handpiece (improved) | Cooling system + mild warmth |
| Downtime | None | None |
| Results Onset | Immediate + 3-6 months | 2-4 weeks + 2-3 months |
| Results Duration | 12-18 months | 12+ months (fat cells permanently destroyed) |
| Best For | Upper face, periorbital, neck tightening | Lower face contouring, double chin, body |
| Price at RE:BERRY | ₩1,990,000 (600 shots) | ₩720,000 (40kJ + Titanium 40kJ) |
Thermage & Onda Pricing at RE:BERRY Gangnam
April-June 2026 promotion. All prices in KRW. VAT excluded.
Onda 40kJ + Titanium 40kJ
- Onda Coolwaves 40kJ
- Soprano Titanium 40kJ
- Combined lifting + tightening
- Post-care LDM therapy
Thermage FLX 600 Shots
- 600 shots monopolar RF
- AccuREP auto-calibration
- Total Tip 2.0 vibrating handpiece
- Full face treatment
- Post-care calming serum
Signature Lifting Package
- Ultherapy Prime 530 shots
- Sofwave 200 shots
- Onda Lifting 100kJ
- Revinas 12,000 shots
- LDM therapy
Meet Your Doctor
Dr. Yoon-Gon Ryu
- CEO, RE:BERRY Clinic Gangnam
- Medical Director, Aesthetic Medicine Specialist
- Revinas Official KOL (Key Opinion Leader)
- Ultherapy Prime Certified Physician
- License No. 131644
Medically reviewed by Dr. Yoon-Gon Ryu, CEO / Medical Director, RE:BERRY
The Science Behind Thermage FLX and Onda Coolwaves
Peer-reviewed evidence comparing monopolar RF and microwave-based lifting technologies.
Thermage FLX: Monopolar Radiofrequency Mechanism
Thermage FLX delivers monopolar radiofrequency energy at 6.78MHz through a capacitively coupled electrode (the treatment tip). RF current passes through the skin and propagates through the tissue along the path of least resistance, generating heat via ionic agitation in the dermis. The 4.0cm2 tip creates a large, uniform heating zone that extends from the deep dermis (2-3mm) to the superficial subcutis. At temperatures of 65-75 degrees Celsius, dermal collagen fibers undergo immediate contraction (denaturation), producing visible tightening during treatment. The thermal injury subsequently activates a wound-healing cascade: heat shock protein (HSP) 47 expression increases, TGF-beta signaling stimulates fibroblast proliferation, and new type I and type III collagen is synthesized over 3-6 months. The AccuREP system measures tissue impedance (resistance to RF current) in real time, adjusting energy delivery per pulse to maintain consistent heating regardless of tissue composition — a significant advancement over earlier Thermage generations that required manual energy adjustments.
Onda Coolwaves: Microwave Mechanism
Onda delivers Coolwaves at 2.45GHz — a microwave frequency that is selectively absorbed by water molecules. Since adipose tissue (fat) contains proportionally more water than the dermis, Coolwaves energy is preferentially absorbed by fat cells, inducing adipocyte apoptosis (programmed cell death) without significant heating of intervening skin layers. The Shallow handpiece targets the dermis for skin tightening. The Deep handpiece targets the dermal-hypodermal junction and fibrous septa (the connective tissue bands responsible for cellulite dimpling). The Deeper handpiece targets subcutaneous fat, inducing controlled adipocyte destruction for circumference reduction. An integrated cooling system maintains surface temperature below the thermal damage threshold throughout treatment.
Clinical Evidence Comparison
The evidence base for Thermage is extensive. Goldie et al. (2021) performed a systematic review of 37 studies with 2,000+ patients, confirming statistically significant skin tightening with monopolar RF. Fritz et al. (J Cosmet Dermatol 2014; doi:10.1111/jocd.12116) reported 87% patient satisfaction at 6 months. For Onda, Bacci et al. (2020) conducted a multicenter study demonstrating significant circumference reduction and skin quality improvement following Coolwaves treatment. A comparative study by Gentile et al. (Aesthetic Plast Surg 2022; doi:10.1007/s00266-021-02673-1) evaluated body contouring outcomes and found that microwave-based technology produced superior fat reduction compared to RF-based devices while achieving comparable skin tightening. Both devices have excellent safety profiles with no reported serious adverse events in the published literature.
References: Goldie et al. A systematic review of monopolar radiofrequency for skin tightening. J Cosmet Dermatol 2021. doi:10.1111/jocd.13791 | Fritz et al. Radiofrequency treatment for skin tightening. J Cosmet Dermatol 2014. doi:10.1111/jocd.12116 | Bacci et al. Coolwaves system for noninvasive fat and skin reduction. J Cosmet Dermatol 2020. doi:10.1111/jocd.13337 | Gentile et al. Microwave-based body contouring vs RF. Aesthetic Plast Surg 2022. doi:10.1007/s00266-021-02673-1
What Our Patients Say
“I came to RE:BERRY for Thermage but Dr. Ryu recommended adding Onda for my double chin area. The combination result was fantastic — tight skin on my upper face from Thermage, and real contouring under my chin from Onda. Much better than either alone.”
“As a 48-year-old with both facial laxity and stubborn body fat, I tried Onda for my abdomen and Thermage for my face in the same visit. Three months later, I lost 3cm around my waist and my face looks noticeably tighter. No downtime, which was essential as a working professional.”
“I had Thermage at another clinic in Singapore for double my RE:BERRY price. The AccuREP system here gave me more consistent results. Dr. Ryu also added Onda to my jawline area which my previous clinic did not have. Definitely returning.”
Thermage vs Onda FAQ
Evidence-based answers about choosing between Thermage FLX and Onda Coolwaves.
For pure skin tightening and firming of the face, Thermage FLX is generally the superior choice — its volumetric RF heating and AccuREP technology produce comprehensive, uniform dermal tightening with 20+ years of clinical validation. However, if your concern includes submental fat (double chin) or jawline contouring alongside tightening, Onda’s fat-selective microwave technology may produce better results for the lower face. Dr. Ryu often recommends Thermage for the upper face and Onda for the lower face in a single session.
Thermage FLX 600 shots is ₩1,990,000 (regular price ₩2,900,000) during our April-June 2026 promotion. The Onda 40kJ + Soprano Titanium 40kJ combination package is ₩720,000. The comprehensive Signature Lifting Package (including Ultherapy, Sofwave, Onda, and Revinas) is ₩5,990,000. All prices exclude VAT.
Yes. At RE:BERRY Gangnam, Dr. Ryu frequently performs Thermage and Onda in a single visit. The devices target different tissue layers and use different energy modalities, so they complement each other without interference. Total treatment time for a combined session is typically 90-120 minutes.
Thermage FLX uses a vibrating handpiece (Total Tip 2.0) that significantly improves comfort compared to older generations. You feel brief warmth during each RF pulse, rated 2-4/10 by most patients. Onda uses an integrated cooling system; you feel mild warmth in the treated area, typically rated 1-3/10. Neither treatment requires anesthesia.
Thermage FLX results last 12-18 months as new collagen gradually ages. Onda results for fat reduction are technically permanent — destroyed fat cells do not regenerate — though weight gain can enlarge remaining fat cells. Skin tightening effects from Onda last 12+ months. Maintenance sessions are recommended every 6-12 months for optimal results.
Onda has been CE-marked since 2018 and has accumulated substantial clinical evidence including multicenter studies (Bacci et al. 2020). The 2.45GHz frequency has been used in medical applications for decades. Onda’s integrated cooling system provides an additional safety margin by protecting the skin surface. No serious adverse events have been reported in the published literature.
Yes. The Onda Deeper handpiece targets subcutaneous fat, inducing adipocyte apoptosis for localized fat reduction. Body Onda 100kJ at RE:BERRY Gangnam is ₩1,090,000. It is most effective for localized fat deposits (abdomen, flanks, arms, thighs) rather than overall weight loss. Results develop over 4-12 weeks as destroyed fat cells are cleared by the lymphatic system.
Thermage FLX (current generation) features AccuREP technology that automatically calibrates energy based on tissue impedance, and the Total Tip 2.0 vibrating handpiece for improved comfort. Earlier Thermage generations (CPT, NXT) required manual energy adjustments and had less effective comfort management. RE:BERRY Gangnam exclusively uses Thermage FLX — never older-generation equipment.
Thermage targets the dermis (0.5-3mm) for skin tightening, while Ultherapy Prime targets the deep SMAS layer (4.5mm) for structural lifting. In simple terms: Thermage tightens, Ultherapy lifts. RE:BERRY Gangnam offers both devices. See our detailed Ultherapy vs Thermage comparison page.
Onda uses microwave energy (heat) to destroy fat cells, while CoolSculpting uses cryolipolysis (cold). Onda offers the additional benefit of skin tightening alongside fat reduction — CoolSculpting treats fat only. Onda treatment time is typically shorter (30-60 min vs 35-75 min per area). See our detailed Onda vs CoolSculpting comparison page.
Neither Thermage nor Onda requires any downtime. You can return to work, exercise, apply makeup, and fly immediately after treatment. Mild redness resolves within 30 minutes (Thermage) to 2 hours (Onda). No compression garments, no activity restrictions.
Yes. Both treatments are truly walk-in, walk-out procedures with zero downtime. Many of our international patients schedule their treatment in the morning and fly home the same evening.
For neck skin tightening specifically, Thermage FLX is typically the first choice due to its large 4.0cm2 tip and volumetric heating pattern, which is ideal for the neck’s thin skin and broad surface area. If the neck concern includes submental fat (double chin), adding Onda Deeper can address both fat and skin laxity simultaneously.
Most patients see significant results from a single Thermage FLX session, with maintenance recommended at 12-18 months. Onda typically requires 1-3 sessions spaced 4-6 weeks apart for optimal fat reduction, with skin tightening improvements from the first session. Dr. Ryu determines the optimal protocol during your consultation.
Yes. RE:BERRY Gangnam is certified by Solta Medical (Thermage FLX) and DEKA (Onda). Both devices are MFDS-registered and use only manufacturer-supplied consumables. We display our certifications prominently. Counterfeit and grey-market devices are a documented concern in the Korean aesthetic market.
Korea’s competitive aesthetic medicine market keeps Thermage prices significantly lower than Japan, Singapore, or Hong Kong. Thermage FLX 600 shots at RE:BERRY Gangnam is ₩1,990,000 (approximately $1,500 USD), compared to typical prices of $3,000-5,000 in Japan and $4,000-6,000 in Singapore. Quality is identical — same device, same genuine consumables.
Absolutely. Both devices work equally well for male patients. Common treatment goals for men include jawline definition (Onda), neck tightening (Thermage), and body contouring (Onda Body). Approximately 25% of RE:BERRY Gangnam’s energy-based lifting patients are male.
After cleansing, the physician applies a coupling gel and begins delivering RF pulses through the 4.0cm2 tip in a grid pattern across the treatment area. You feel brief warmth during each pulse. The vibrating handpiece reduces sensation. AccuREP automatically adjusts energy per pulse. Full face treatment takes 45-60 minutes. No anesthesia is required.
If single-device treatment does not meet your goals, RE:BERRY Gangnam offers multi-device combination protocols. Adding Ultherapy Prime for SMAS-depth lifting, Sofwave for mid-dermis tightening, or Revinas for collagen stimulation can address tissue layers that neither Thermage nor Onda reaches alone. The Signature Lifting Package (₩5,990,000) combines four devices for comprehensive results.
Book via our website, WhatsApp (+82-2-039-2822), KakaoTalk, Line, or WeChat. Consultations available in 8 languages. Walk-ins accepted 365 days, 10 AM – 8 PM. Dr. Ryu will assess your anatomy and recommend the optimal device or combination.
Only Authentic, Brand-Certified Equipment
Every device at RE:BERRY is MFDS-certified and manufacturer-verified. We never use counterfeit or grey-market equipment.
Find Out Which Device Is Right for You
Book a complimentary assessment with Dr. Yoon-Gon Ryu. Both Thermage FLX and Onda Coolwaves are available for same-day treatment. Open 365 days, 10 AM – 8 PM.
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- ✓ Free consultation with Dr. Yoon-Gon Ryu
- ✓ 8-language support (EN, JA, ZH, TH, VI, MN, FA)
- ✓ Gangnam Station area, Seoul
- ✓ No downtime treatments available
- ✓ Visa / Mastercard accepted
- ✓ Current promotion pricing available