When consulting about Onda, people often ask, "Isn't this a procedure that reduces fat?"
The answer is both yes and no.
The same device can be used to treat the fat layer or dermal elasticity.
What is done depends on the depth setting.
Please take just one minute to read this.
One Device, Two Goals
Onda uses microwave energy.
| Targeted Depth | Treated Area | Expected Change |
|---|---|---|
| Shallow Layer | Dermis | Elasticity, skin texture |
| Deep Layer | Subcutaneous Fat | Contour, volume |
Even on the same person's face, the goals vary by area.
For example, the area under the chin may require volume reduction, while the cheeks may only need elasticity treatment.
If the depth is not distinguished here, the volume of an unwanted area may decrease, making it appear sunken.
That's Why Diagnosis Comes First
To determine the depth, two things must be known:
- Skin thickness by area
- Thickness and distribution of the fat layer by area
If this is not checked and the procedure is performed with a uniform setting, unwanted changes may occur in areas with less fat.
Conversely, if only a shallow setting is used on areas with thick fat, contour changes may not be achieved.
(※ Effects and reactions may vary depending on the individual's skin condition, and suitability for the procedure is determined through consultation with medical staff.)
Points Revealed in Consultation
"How do you distinguish between areas on my face that need volume reduction and areas that only need elasticity treatment?"
If you receive a differentiated answer for each area to this question, it indicates a planned approach.
If the answer ends with "we will proceed for a few minutes overall," it may indicate a uniform approach without distinguishing depth.
This check is especially important for those with a slender face or already sunken cheeks.
Overlapping Points with Other Devices
There are devices that take a similar approach by treating different depths.
The difference lies in how intensely and at what depth the heat is delivered, and how it spreads.
Rather than focusing on which device is better, it becomes easier to choose if you first consider how many areas on your face need to be differentiated.
A comparison of two devices with different depths was covered in Oligio Kiss vs. Onda: What's the Difference?.
Frequently Asked Questions
Is Onda a procedure that reduces fat?
Depending on the depth setting, it can treat the contour of the fat layer or dermal elasticity. Goals are differentiated by area.
Can my cheeks become sunken?
If a deep setting is used on areas with less fat, unwanted changes may occur. Confirmation of fat distribution by area should precede the procedure.
Why is diagnosis necessary?
To determine the depth, the skin thickness and fat layer thickness for each area must be known. Proceeding with a uniform setting without confirmation may lead to undesirable results.
What should I ask during the consultation?
Asking how the areas for volume reduction and areas for elasticity treatment will be distinguished will reveal whether a plan is in place.
What are the reactions after the procedure?
Temporary heat, redness, and swelling may occur. The degree and duration vary by individual.
Recovery and Downtime: Progress of Microwave-based Procedures
Heat and redness may persist on the day of the procedure and generally subside within one or two days.
Areas treated at a deep layer may experience soreness for a few days.
Contour and elasticity changes appear over several weeks thereafter.
How is the Cost Structured?
The cost is not determined solely by time or number of shots.
It varies depending on how many areas are divided, how many depth settings are used, and whether diagnosis and post-care are included.
For an accurate cost, it is more precise to provide it after a consultation that confirms the condition of each area.
Visit and Consultation Information
O.N Clinic is conveniently located near Gangnam Station, making it easily accessible by subway.
For any questions before your visit, you can easily inquire via Chat Now for Consultation, and through consultation, you can coordinate your goals for each area and appointment schedule.
It is more accurate to determine the depth and areas after confirming fat distribution during an in-person consultation.
Author: Dr. Oh Seung-Min (Chief Director of O.N Clinic, graduated from Seoul National University College of Medicine, Academic Chairman of the Korean Laser Dermatology and Hair Society). More details about his career can be found in Meet Our Medical Team. First published 2026-07-16 / Last reviewed 2026-08-15
This article is for general information purposes only, and appropriate treatment and results may vary depending on individual conditions.
