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Body ONDA in Seoul: Planning Sessions Around Your Trip

A planning guide for Body ONDA at RESUM Plastic Surgery Clinic in Gangnam, Seoul: session length, the gap between sessions and how large areas are divided.

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Published: 2026-10-15

Updated: 2026-10-15

At a glance

A Body ONDA session takes about 30 minutes and needs no anaesthesia.
The course is 3 or more sessions at 4-week intervals, and large areas are split across visits.
It refines localised fat and cellulite. It is not a substitute for weight loss.

What is Body ONDA?

Body ONDA uses the 2.45 GHz microwave energy of DEKA's ONDA device on the body. The microwaves are absorbed by fat cells and heat the fat layer and the dermis together, so pockets of fat, cellulite and slack skin are treated in the same session.

It is used on the abdomen, flanks, upper arms, thighs and back. Where there is cellulite, the heat works between the fibrous connective tissue and the fat lobules, softening the tissue while reducing fat cells.

How long does Body ONDA take, and how often?

A Body ONDA session takes about 30 minutes, with no numbing and a return to daily activities right after. The clinic lists 3 or more sessions, 4 weeks apart, and a large area is divided across a split schedule instead of being pushed in one visit. Travellers should therefore send us their dates and the areas they have in mind before booking, so the doctor can say what fits into one stay.

Session	About 30 minutes
Numbing	None needed
Back to daily activities	Right after the session
Sessions	3 or more, 4 weeks apart
How long it lasts	About 6-12 months

What Body ONDA cannot do

Body ONDA does not replace dieting or weight loss. It is suited to localised fat and cellulite that diet and exercise have not shifted, and the contour settles gradually over several sessions. A dramatic change from 1 session is not promised, and Dr. Jin-Young Kim goes through these expectations in the consultation before anything is planned.

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Purpose & suitability

A pocket of fat on the abdomen, flanks, upper arms or thighs has not responded to diet and exercise.

Your body contour lost definition after childbirth or a change in weight, and you want a non-surgical approach.

Cellulite on the thighs or abdomen bothers you.

The skin over the area is slack as well, and you want it treated along with the fat.

You would rather treat one area at a time, in stages, without anaesthesia.

Treatment process

Area assessment. Skin thickness and the spread of fat and cellulite are checked separately for the abdomen, flanks, upper arms and thighs.
Split plan. An intensity range is set for each area, and large areas are scheduled over more than one visit.
Treatment. Microwaves are delivered to the connective tissue and fat lobules while Coolwaves cooling protects the skin surface.
Before you leave. You are told how the contour changes as sessions add up, when the next part of the schedule is due and how to care for the area.

Time & recovery

Slight redness, mild swelling or warmth in the treated area can remain for 1-2 days and fades by itself.

Saunas and hot compresses are to be avoided for 1 week.

Mild tightening may be felt right after a session. Fat cell reduction and collagen formation show gradually over 1-3 months, so the contour keeps changing between sessions and after you return home.

Limitations & precautions

Body ONDA is not given to people with an implanted electrical device such as a pacemaker, is not recommended during pregnancy, and is not used over an active skin infection or severe inflammation.

Facial settings are not used on the body. Skin and fat thickness differ between the abdomen, thighs, upper arms and back, so the intensity is planned again for every area.

Temporary hyperpigmentation or itching occurs in rare cases, and the outcome depends on your constitution and the degree of cellulite. Please consult Dr. Jin-Young Kim before treatment.

Frequently asked questions

Can I complete Body ONDA in one trip to Seoul?

One session fits into a trip, as Body ONDA takes about 30 minutes and you can carry on with your day afterwards. The full course is 3 or more sessions spaced 4 weeks apart, and large areas are split across visits, so the schedule has to be agreed with the doctor around your travel dates.

Does Body ONDA need anaesthesia?

No, Body ONDA is generally performed without anaesthesia. Coolwaves cooling and a contact temperature sensor keep the surface temperature from rising too far, and discomfort is limited.

Will Body ONDA make me lose weight?

No. Body ONDA is not a weight-loss treatment. It refines localised fat and cellulite that remain despite diet and exercise, and the change builds gradually over several sessions.

Which body areas can be treated?

Body ONDA is used on the abdomen, flanks, upper arms, thighs and back. Each area has its own skin and fat thickness, so the intensity is set separately and a wide area is treated in stages.

How long do the effects of Body ONDA last?

The effects of Body ONDA last about 6-12 months. Fat cell reduction and collagen formation appear over 1-3 months, and the contour becomes more stable as sessions accumulate.