Gangnam
Dr. Yoongon Ryu
Aesthetic Medicine Specialist
Flagship clinic · KOL for leading lifting & regenerative devices
Onda uses Coolwaves microwave energy at 2.45 GHz, with about 80% absorbed by fat, to reduce localized adiposity and cellulite over a short series of sessions.
Onda is a non-invasive body-contouring treatment that uses Coolwaves microwave energy at 2.45 GHz to selectively heat fat cells, reduce localized adiposity and cellulite, and tighten overlying skin. Most patients have a short series of sessions on the abdomen, flanks, or thighs, with minimal downtime and gradual results over weeks.
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Onda is a non-invasive body-contouring and skin-tightening treatment that uses Coolwaves, a form of microwave energy, to target localized fat, cellulite, and skin laxity at the same time. It is used on areas such as the abdomen, flanks, thighs, arms, and under the chin, offering a no-surgery, no-needle option for people who want to refine stubborn pockets and firm the overlying skin.
Onda works because microwaves are preferentially absorbed by fat: roughly 80% of the energy is taken up by fat cells, which are stressed by the controlled heating and gradually release their lipid content to be cleared by the body. The same heat stimulates the dermis, so collagen remodels and skin tightens over the treated area. An integrated cooling plate keeps the skin surface comfortable while energy reaches the deeper fat layer.
Onda is best for localized fat and cellulite rather than significant weight loss, and works alongside a healthy lifestyle. Reberry Clinic offers Onda across three Seoul-area locations (Gangnam, Myeongdong, Incheon Airport), with English-language consultation and a plan tailored by the clinic’s doctors to your areas and goals.
Onda uses Coolwaves, microwave energy at 2.45 GHz delivered through a handpiece that contacts the skin. Microwaves cause dielectric heating, and because fat absorbs these waves efficiently, around 80% of the energy is taken up by adipocytes while the remaining 20% reaches adjacent tissues. The heating stresses fat cells so they release lipid content into the interstitial space, where it is cleared naturally over the following weeks, while the warmed dermis is prompted to build new collagen for firmer skin. A built-in cooling system protects the epidermis so the surface stays comfortable as energy is delivered to the deeper fat layer. Treatment is planned in passes over each area, and most patients have a short series of sessions for a progressive contouring and tightening effect.
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The clinic’s doctors mark the abdomen, flanks, or thighs and set parameters for your tissue, planning a short series of sessions.
Coolwaves at 2.45 GHz heat the fat layer, with around 80% of energy absorbed by fat cells while cooling protects the surface.
The controlled heat stresses adipocytes so they release lipid content, gradually cleared by the body over several weeks.
The same warmth stimulates the dermis, building new collagen so the overlying skin tightens over about 8 to 12 weeks.
Results develop over the weeks after each of the usual 3 to 6 sessions, refining shape and firmness gradually.
See representative outcomes from Reberry Clinic. Results build gradually and vary by individual; your plan is assessed at consultation.
The clinic’s doctors assess your target areas and lifestyle, then design a plan of usually 3 to 6 sessions, explained in English.
A typical Onda session takes about 30 to 45 minutes per area, with surface cooling keeping the skin comfortable.
Sessions are usually spaced a few weeks apart, and most patients resume normal activities the same day.
Contouring and tightening build gradually over 8 to 12 weeks as fat clears and collagen forms.
Results are best maintained with a stable weight, hydration, and a healthy lifestyle; further sessions can refine the area.
Onda uses Coolwaves microwave energy at 2.45 GHz, which is preferentially absorbed by fat, with around 80% taken up by fat cells. The controlled heating stresses these cells so they release lipid content for the body to clear, while skin tightens. You can read more on our Onda page, with no surgery or needles involved.
Onda is commonly used on the abdomen, flanks, thighs, arms, and under the chin, where localized fat or cellulite collects. It also tightens the overlying skin. Your doctor confirms which areas suit your goals at consultation, and may suggest a firmness-focused option such as our Sofwave page where skin laxity is the main concern.
Adults near a stable, healthy weight with localized fat or cellulite on the abdomen, flanks, or thighs are ideal candidates, especially those wanting non-surgical contouring. Onda is not a weight-loss treatment, so very large fat volumes may need other approaches. A consultation confirms whether contouring or another option fits best.
Most patients describe Onda as a comfortable, warming sensation as the handpiece moves over the area, eased by the built-in surface cooling. It is generally well tolerated without anaesthesia. Any warmth is temporary and settles soon after the session, and there is no lingering pain once you leave the clinic.
Downtime is minimal, and most patients resume normal activities the same day. Some experience mild redness or temporary warmth and tenderness in the treated area for a few hours. There are no bandages or major restrictions, so international visitors can usually continue their plans shortly after the session.
Results build gradually over 8 to 12 weeks as fat cells release their content and the body clears it, while collagen remodels for firmer skin. Improvement is progressive across the usual series rather than immediate. In a study, a median abdominal circumference reduction was measured four weeks after the final session.
Most patients have a short series of about 3 to 6 sessions, spaced a few weeks apart, tailored to the area and your goals at consultation. The exact number depends on the size of the area and the amount of localized fat. Your doctor sets the plan rather than applying a fixed figure for everyone.
Results can last several months and beyond when supported by a stable weight and healthy lifestyle, since the treated fat cells are cleared by the body. Significant weight gain can affect the outcome over time. Many patients maintain results with periodic sessions and good habits, and your doctor will advise on upkeep.
Yes, alongside reducing localized fat, the controlled heat stimulates the dermis so collagen remodels and the overlying skin tightens over the treated area. This dual effect is one reason Onda suits cellulite and laxity. If firmness alone is your goal, an ultrasound option such as our Sofwave page may suit better.
Yes, Onda is often paired with other body procedures for complementary contouring and firmness, sequenced safely by your doctor. For example, some patients add a radiofrequency option such as our RF body skin tightening. Your doctor will advise the order and timing to suit your areas and goals.
Onda has a favourable safety profile when performed by trained operators, with transient redness the most common finding and no serious adverse events reported in studies. The cooling plate protects the skin surface during treatment. Your doctor reviews your medical history, including any implants or pacemaker, to confirm the treatment is appropriate for you.
Expect mild redness, warmth, or temporary tenderness in the treated area for a few hours after the session. Occasional bruising or firmness under the skin is less common and self-resolving. Serious complications are rare when an experienced operator uses appropriate settings. Your doctor reviews your history beforehand to minimise any risk.
Aftercare is simple: stay well hydrated to help your body clear the treated fat, keep active, and protect the area from intense heat for a day or two. There are no dressings or major restrictions for most patients. The clinic provides written aftercare so you can follow it confidently once you travel home.
Because Onda is usually a series, you can start treatment during a short trip of 2 to 3 days and continue sessions on later visits, or plan a longer stay to complete several. Downtime is minimal between sessions, so you can combine it with a related option such as our RF body skin tightening. Our English team coordinates the schedule.
Yes, flying soon after Onda is generally fine, often the same day, because it is non-invasive with minimal swelling. Stay hydrated during the flight to support your body in clearing the treated fat. If you had several large areas treated, your doctor will advise any specific timing before you travel home.
International patients can have remote check-ins in English after returning home, with progress reviewed over the weeks results develop and any further sessions planned. If you want complementary body care later, you can explore our body rejuvenation options. Your treatment plan and notes are kept on file for any future visit.
Onda, body radiofrequency, and ultrasound skin tightening use different energy types, so the right choice depends on whether your goal is fat reduction or skin firmness.
| Onda (Coolwaves) | InMode RF (body) | Body Sofwave | |
|---|---|---|---|
| Energy / mechanism | Coolwaves microwave energy, ~80% absorbed by fat | Bipolar radiofrequency / RF microneedling | SUPERB synchronous parallel-beam ultrasound, mid-dermis ~1.5 mm |
| Best for | Localized fat and cellulite with skin tightening | Skin tightening with some contouring | Loose, crepey skin firmness |
| Pain / comfort | Warmth, tolerable with surface cooling | Warmth, tolerable with cooling | Brief warmth, generally well tolerated |
| Downtime | Minimal to short | Minimal to short | Minimal |
| Results timeline | Builds over 8 to 12 weeks | Builds over weeks to months | Builds over 6 to 12 weeks |
| Longevity | Several months, varies with lifestyle | Several months to a year, varies | Around 12 months, varies |
| Sessions | Usually 3 to 6 sessions | Often a short series | Usually 1 session |
| Cost factors | Depends on areas and number of sessions; set at consultation | Depends on areas and sessions | Depends on body areas and size |
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