ONDA Body Results: What Changes, When, and How Many Sessions — A Doctor's Follow-Up to Mikaela's Episode

“When will I see my ONDA body results, and is one session enough?” is the question I'm asked most often once a body session is over — usually while the patient is still lying on the bed. I'm Dr. Hyunji Kim, director of Delphic Clinic in Sinnonhyeon, Gangnam. I trained at Korea University Medical Center, and I consult and treat our international patients myself. Mikaela's caption lists ONDA Body 60kJ at the event price, and I've already explained how that session works and feels. This page picks up afterwards: what ONDA body results are made of, the order they tend to appear in, how many sessions people usually need, and when I'd say not yet.

Medically reviewed · Dr. Hyunji Kim · October 26, 2026

What are ONDA body results actually made of?

ONDA body results come from two changes happening under the skin. ONDA uses microwave energy to heat the fat layer while the surface stays cool, and the same heat encourages collagen production for firmer-looking skin.

That means you're watching for two things: a slimmer contour as treated fat is cleared, and skin that looks a little tighter over it. Neither shows fully on the day. I explained how the session itself works and feels in my notes on Mikaela's episode.

In what order do ONDA body changes show up?

1. 1

   Right after

   The area feels warm and can look slightly tighter, partly from mild swelling. This isn't the result yet.

2. 2

   The first weeks

   Swelling settles and treated fat begins to be cleared. Changes are small and easy to miss in the mirror.

3. 3

   After several weeks

   This is when I compare photos taken in the same light, angle and posture. The contour and skin firmness are easier to judge.

Clothes fitting differently around the waist is often the first thing people notice, before any photo shows it.

How many ONDA body sessions do people usually need?

There's no single number I give everyone. A thin layer of soft fat can respond well to one session, while a thicker area or a goal that includes firmer skin often needs more than one.

I prefer to decide after seeing how your body responds to the first session. If you're visiting Seoul once, I'll tell you upfront whether one session is a reasonable stand-alone plan or only the first step.

40kJ or 60kJ: what the energy number changes

The kJ figure is the total energy delivered to one area. Mikaela's caption lists 60kJ; our menu also offers 40kJ for one body area. A larger or thicker area is where I tend to consider 60kJ. I've explained how to read these numbers in my guide to whether 40 kJ of ONDA is enough.

What can slow ONDA body results down

• Weight gain after treatment — ONDA reduces fat in one area; it doesn't stop new fat forming.
• Judging too early, especially while swelling is still there.
• Comparing photos taken in different light or posture.
• Expecting ONDA to tighten very loose skin with little fat underneath.

Another patient, Debbie, shared an honest review of ONDA body for belly fat, which is a useful second example of how results are described.

ONDA body prices on our menu

Mikaela posted the event price she saw. Below is our current menu for one body area. Korean and international patients pay the same.

Each additional area or session adds to the total. If you're budgeting a whole trip, my ONDA cost planner helps you work it out before you fly.

When I'd say not yet

• You're pregnant or breastfeeding.
• You have a pacemaker or metal implants in the area.
• You're still losing weight quickly — let it settle first.
• Your main concern is very loose skin with little fat beneath it.

1. 1

   Send a photo first

   A side photo of the area and your travel dates help me plan the energy and sessions.

2. 2

   Consultation and same-day treatment

   A free 1:1 consultation with me, then same-day treatment if it suits you. English and Chinese interpreters are on site, near Exit 3 of Sinnonhyeon Station.