If you are looking into ONDA for the thighs, you probably want two things: a plain explanation of what the treatment is, and a sense of how the appointment actually goes. This guide walks through stills taken from a clinic shoot recorded by Beauty Blossom Clinic in October 2025 and keeps the explanations within what the clinic's official ONDA page states.

What is ONDA?

The clinic's official page describes ONDA as a non-invasive procedure that uses high microwave energy (Coolwaves) to deliver heat deep into the skin. It says the system protects the epidermis while delivering energy to the dermis, with contact cooling.

The page also mentions 3 mm and 7 mm handpieces that allow treatment to be tailored to skin type. Which handpiece, which area and how many visits are decisions made after an in-person assessment, and results vary from person to person.

The appointment in photos

Every photo below is a real still from footage recorded in the same session. They illustrate the order of an appointment; they are not evidence of results.

1. The consultation desk and preparation area

The visit starts with a conversation about the area that bothers you and what you hope to change. The footage shows a visitor at the desk with a mirror, and the locker area used before treatment.

A visitor in a cap and mask sitting at a consultation desk, looking at a desk mirror
A visitor in a cap and mask sitting at a consultation desk, looking at a desk mirror
A corner of the locker area with small locker doors and wall-mounted fixtures
A corner of the locker area with small locker doors and wall-mounted fixtures

2. Measuring the upper thigh with a tape

In the treatment room a tape measure is placed around the upper thigh. Recording a starting measurement gives you a reference point for later conversations about progress.

A person in a grey jacket holding up a black gown with a white measuring tape around the upper thigh
A person in a grey jacket holding up a black gown with a white measuring tape around the upper thigh
A staff member's hands holding a measuring tape around a person's upper thigh
A staff member's hands holding a measuring tape around a person's upper thigh

3. Looking at the legs while standing

These stills show the thighs and lower legs being looked at in a standing position. Naming the exact area that bothers you before the visit makes the consultation easier.

A close view of a person's thighs and knees standing against a plain white wall
A close view of a person's thighs and knees standing against a plain white wall
A person's lower legs standing barefoot on the floor, seen from the front
A person's lower legs standing barefoot on the floor, seen from the front

4. The ONDA device

The treatment room has a white device carrying the ONDA logo. The settings screen is deliberately left out of these photos.

The white ONDA device with its logo and a red emergency stop button
The white ONDA device with its logo and a red emergency stop button

5. Gel and the handpiece

A gloved hand moves a handheld applicator over a leg coated with gel. The photos do not show which handpiece size or power setting was used.

A gloved hand moving a green-lit handheld applicator over a gel-coated leg, with a white towel beside it
A gloved hand moving a green-lit handheld applicator over a gel-coated leg, with a white towel beside it
A close view of a gloved hand holding a handheld applicator against a gel-coated leg
A close view of a gloved hand holding a handheld applicator against a gel-coated leg
A leg resting on a treatment bed with a glossy layer of gel on the skin
A leg resting on a treatment bed with a glossy layer of gel on the skin

Questions worth bringing to the consultation

  • Is my thigh concern something ONDA is suited to, in your assessment?
  • Which handpiece, 3 mm or 7 mm, would you use for me, and why?
  • How long will the session take and how are visits spaced around my schedule?
  • What warmth or cooling should I expect during treatment?
  • What should I avoid on the day, and whom do I contact if something feels wrong?
  • Which earlier treatments or medicines should I tell you about?

What the clinic says about aftercare

The official page says there is virtually no downtime and you can return to daily activities right away. It advises avoiding alcohol and saunas on the day of treatment and taking care with sun protection and moisturizing. Reactions differ between people, so contact the clinic if something feels unusual.

Visiting the clinic

Beauty Blossom Clinic is on the 6th and 8th floors of Medione Medical Center, 66 Yanghwa-ro, Mapo-gu, Seoul, right in front of Hapjeong Station Exit 3. Reception is on the 6th floor. Phone: +82-2-336-7511. Please confirm public-holiday hours with the clinic.

General information only; not a diagnosis or a treatment recommendation. The photos come from footage the clinic recorded in October 2025. Suitability is decided by a doctor at consultation. Clinic's official ONDA page

Your questions

What is ONDA?

The clinic's page describes ONDA as a non-invasive lifting and tightening procedure using high microwave energy (Coolwaves) to deliver heat deep into the skin, with contact cooling.

How long does an ONDA session take?

The clinic's FAQ says about 20 to 40 minutes. Actual time depends on the area and your condition, so confirm it at your consultation.

Is ONDA painful?

The clinic says the cooling system keeps discomfort relatively low and that you may feel some warmth. Individual experiences vary.

What is the aftercare for ONDA?

The clinic says downtime is virtually nil. Avoid alcohol and saunas on the day, and look after sun protection and moisturizing.

Where is Beauty Blossom Clinic?

6th and 8th floors, Medione Medical Center, 66 Yanghwa-ro, Mapo-gu, Seoul, in front of Hapjeong Station Exit 3. Reception is on the 6th floor. Phone +82-2-336-7511.