Onda Lifting in Korea: What Is It and How Many kJ Do You Need?

If you've been researching non-surgical face lifting options in Korea, you've likely come across Onda Lifting and you probably have questions. Does it actually work? How is it different from HIFU devices like Ultherapy or Shurink? And what should you know before booking a treatment from abroad?

This guide answers all of that in plain terms, so you can walk into your consultation at SIA Clinic already informed.

What Is Onda Lifting?

Onda is a medical-grade device developed by DEKA, an Italian aesthetic technology company. Instead of using ultrasound (like HIFU) or traditional radiofrequency, Onda relies on a proprietary microwave technology called Coolwaves, operating at 2.45 GHz.

That frequency isn't arbitrary, it's the same frequency used in household microwaves, chosen because it's efficiently absorbed by tissue with high water and fat content. In practice, that means Onda can act on the fat layer and the deeper dermis while a built-in cooling system keeps the skin's surface protected and comfortable.

The result is a treatment that does two things at once, in a single session:

Tightens skin by stimulating collagen remodeling in the dermis

Softens submental fat (the fullness under the chin) that blurs jawline definition

This dual action is why Onda has become a popular alternative or complement to HIFU treatments for patients who want a sharper jawline without surgery.

How Onda Lifting Works, Step by Step

1. Consultation & skin assessment : your provider evaluates skin laxity, fat distribution, and jawline structure to determine the right handpiece depth and energy settings for you.

2. Handpiece selection : Onda uses different handpieces for different depths: a superficial one for skin tightening, and deeper ones for fat and connective tissue. For facial treatment, the focus is usually the jawline and submental (under-chin) area.

3. Treatment : the handpiece is moved across the target area while continuous cooling protects the skin. Most patients describe the sensation as warm, not painful, a key reason patients often choose Onda over more intense HIFU protocols.

4. No downtime : most patients return to normal activities immediately, which matters if you're traveling and have a limited trip window.

What Results Can You Expect?

Results vary by individual, and that's worth being upfront about, anyone promising identical results for every face isn't giving you the full picture.

Some patients notice a visibly more defined jawline after a single session, particularly when the concern is mild submental fullness.

For more noticeable fat reduction and skin tightening, providers commonly recommend a course of around 4–5 sessions spaced two weeks apart, followed by periodic maintenance every 2–3 months.

Because Onda works gradually through collagen remodeling and fat cell reduction, results build over several weeks rather than appearing instantly, this is a biological process, not a quick fix.

Your provider at SIA Clinic will give you a realistic, personalized expectation during your consultation rather than a generic promise.

How to Choose the Right Onda Energy Level (kJ)

Unlike HIFU devices, which are usually priced and dosed by "shot count," Onda treatments are measured and priced by total energy delivered, in kilojoules (kJ), sometimes called "line count" or "Joules" by clinics. This number matters because it directly affects both your results and your price, so it's worth understanding before your consultation.

As a general guide, facial Onda protocols in Korea typically fall into three ranges:

~30–50 kJ Light tightening: Suited to patients with a naturally slim face, thin skin, or minimal fat, who mainly want subtle skin tightening and a texture boost without touching facial volume.

~60 kJ Standard full-face balance: The most common "starting point" dose for patients who want both noticeable skin tightening and mild jawline definition in a single, balanced session.

~80–100+ kJ Fat reduction focus: Used when the main concern is submental fullness (double chin) or more pronounced fat under the jaw, where stronger energy is needed to meaningfully reduce fat volume alongside tightening.

What determines the right number for you isn't a fixed formula, it's your anatomy. During your consultation, your provider will assess:

Facial fat thickness, especially under the chin and along the jawline

Skin laxity, since thinner or more fragile skin needs a gentler protocol

Your primary goal : subtle refinement vs. visible fat reduction call for very different energy levels

Treatment history, if you've had Onda, HIFU, or fillers before, since previous treatments can affect how your face responds

A word of caution: more kJ is not automatically better. Overtreating a naturally slim face can lead to excess fat loss and a hollow or gaunt look, which is harder to reverse than undertreating. This is why an experienced practitioner, not a generic package, should determine your dose. At SIA Clinic, your kJ level is calibrated during your consultation based on a physical assessment, not selected from a menu in advance.

Onda vs HIFU (Ultherapy, Shurink): What's the Difference?

This is the question most international patients ask, so here's a direct comparison:

	Onda	HIFU (Ultherapy / Shurink)
Technology	Microwave (Coolwaves, 2.45 GHz)	Focused ultrasound
Primary action	Fat reduction + skin tightening	Deep structural lifting (SMAS layer)
Best for	Submental fullness with mild-to-moderate laxity	Significant sagging with adequate skin thickness
Pain level	Generally low; numbing cream unnecessary	Can range from mild to moderately uncomfortable
Downtime	None	Minimal (occasional swelling/tenderness)

In practice, many Korean clinics, including SIA Clinic, combine Onda with other modalities depending on your specific concern. If your main issue is a fuller lower face with early sagging, Onda alone may be sufficient. If you have more significant sagging with less fat, a HIFU-based approach or a combination protocol may be recommended.

Is Onda Lifting Right for You?

Onda tends to be a good fit if you:

Have mild to moderate submental (under-chin) fullness

Want jawline definition without surgery or significant downtime

Have some skin laxity but not severe sagging

Want a low-pain, easily repeatable treatment

It may not be the ideal first choice if you have significant skin excess or structural sagging that needs deeper lifting, in that case, your SIA Clinic provider may suggest an alternative or combination treatment during your consultation.

Planning Your Onda Lifting Trip to Korea: What International Patients Should Know

Korea's aesthetic medicine industry is built around efficiency for international patients, and SIA Clinic follows the same model:

English-language consultation support, including video consultations before you travel, so you can plan your treatment schedule in advance

Realistic itinerary planning : since Onda requires no downtime, it fits easily around sightseeing or business travel, though a full course requires multiple visits or an extended stay

Transparent, itemized pricing provided before treatment, with no hidden fees, see our current Onda Lifting price list for session and package rates

Device-specific expertise : ask your clinic which generation of Onda device they use and how many treatments they've performed, since technique and calibration affect results

If you're combining your trip with other treatments (skin boosters, fillers, or a HIFU protocol), a single consultation can help map out a sequence that makes sense for your face and your schedule.

Frequently Asked Questions

Q: Is Onda Lifting painful?

A: Most patients describe it as a warm, tolerable sensation rather than pain, largely due to the device's built-in cooling system. Numbing cream is often unnecessary.

Q: How many Onda sessions do I need?

A: It depends on your goals. Some patients see visible jawline definition after one session, but a course of around 4–5 sessions spaced two weeks apart is commonly recommended for fat reduction and skin tightening.

Q: How long do Onda Lifting results last?

A: With periodic maintenance sessions (roughly every 2–3 months), results can be maintained long-term. Individual results depend on skin condition, age, and lifestyle factors.

Q: How many kJ do I need for Onda Lifting?

A: It depends on your face. As a general range, ~30–50 kJ suits light tightening on a slim face, ~60 kJ is a common full-face starting dose, and ~80–100+ kJ is used when submental fat reduction is the main goal. Your provider determines the exact number during a physical assessment, it should never be a fixed, pre-selected package.

Q: Is Onda Lifting the same as HIFU?

A: No. Onda uses 2.45 GHz microwave technology (Coolwaves), while HIFU devices like Ultherapy or Shurink use focused ultrasound. Onda targets fat reduction and skin tightening simultaneously; HIFU primarily targets deeper structural lifting.

Q: Can I fly home the same day as my Onda treatment?

A: Yes, Onda has no required downtime, making it practical for international patients with limited time in Korea.

Q: Is Onda Lifting safe?

A: Onda is a CE-certified medical device manufactured by DEKA and used widely across licensed clinics in Korea and internationally. As with any aesthetic treatment, safety depends on proper patient assessment and provider expertise, which is why an in-person or video consultation is recommended before treatment.

Book Your Onda Lifting Consultation at SIA Clinic

📍 SIA Clinic Gangnam, Seoul, South Korea

🚇 1-minute walk from Sinnonhyeon Station (Exit 3)

💙 English-speaking consultation available

This content is for informational purposes only and does not replace professional medical advice. Individual treatment plans and results may vary. Please consult a qualified medical professional before undergoing any procedure.