Lifting · Firmness

Onda

Onda uses microwaves for localized fat and firmness. For concentrated submental or body fat, we assess fat and laxity and use an area-appropriate handpiece.

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Reviewed by the medical team · 2026.09.14

At a glance

Treatment at a glance

Item	Details
Ingredients · Mechanism	Microwaves (Coolwaves, 2.45GHz) heat subcutaneous tissue for skin/subcutaneous firmness, with preferential heat delivery to fat.
Treatment depth	Mainly subcutaneous fat plus dermis. Deep and shallow handpieces selected by area, with surface cooling.
Suitable candidates	The Korean approved purpose is improved skin/subcutaneous firmness, including abdomen/thighs. Used in areas with both fat and firmness concerns, such as a double chin; other areas including cheeks require assessment.
Treatment time	A few minutes to 30 minutes by area
Anesthesia · Pain level	Usually no anesthesia. A moving warm sensation.
Onset of results	1–2 months
Duration	Around 6 months; cumulative with repeats, varying individually
Suggested sessions · Intervals	3–4 sessions about 4 weeks apart
Downtime	Redness and heat may occur; recovery varies
Main adverse effects	Temporary redness, swelling and heat; rare nodular sensation or burns; asymmetry by area
Manufacturer · Approval	DEKA (200W output, Coolwaves 2.45GHz). Korean MFDS-approved purpose: improved skin and subcutaneous tissue firmness.

What is Onda?

Onda uses 2.45GHz microwaves to heat fat and surrounding tissue for localized fat and firmness. Surface cooling accompanies treatment; scope and intensity follow fat amount and skin thickness.

Onda may be considered when concentrated fat and laxity coexist. We assess submental/jawline concerns on the face and localized fat, cellulite and laxity in body areas such as abdomen/thighs.

Who may be suitable?

When sagging blurs the jawline or creates a double-chin appearance
Localized fat remaining despite weight loss
When you want to address firmness and fat together
Body cellulite/firmness with dedicated body tips

What to check before treatment

If fascial structure causes sagging: Consider other options such as Ultherapy PRIME.
If chewing muscles (masseters) widen the lower face: Consider botulinum toxin too.
Pregnancy/breastfeeding, implanted electronic devices such as pacemakers, local metal implants, acute inflammation/infection

How does it work?

Microwaves cause molecular vibration and heat in tissue. Heat acts on fat cells and connective tissue to induce volume reduction and remodeling, while stimulating dermal collagen for firmness.

Handpiece cooling keeps the epidermis cool, designed to reduce surface heat burden while heating deeper tissue. Repeated sessions address gradual, cumulative fat/tissue changes.

When do results appear, and how long do they last?

Immediately afterward: Heat and mild redness.
2–4 weeks: As swelling settles, contour changes begin.
1–2 months: Changes become more apparent with repeated sessions.
Around 6 months: Maintained, varying with weight and lifestyle.

How is the treatment performed?

Consultation: Distinguish fat, sagging or muscle as the main cause, then set area and sessions.
Preparation: Apply oil, then move the handpiece across the area. Anesthesia is usually unnecessary.
Treatment: Moving warmth, lasting a few minutes to about 30 minutes depending on area/scope.
Finishing: Soothing before leaving. Daily activities can resume the same day.

Recovery & Precautions

Redness and heat usually settle within hours.
Avoid saunas, strenuous exercise and alcohol on the day.

Contact the clinic if this occurs

If blisters, weeping or burn marks appear
If firm nodules persist in the treated area
If redness or pain worsens over several days

How we proceed at WayB

We use separate facial and dedicated body tipsbecause area and depth requirements differ.
If muscle widens the lower face, we recommend considering toxin rather than Onda. Distinguishing the cause comes first.
We adjust area order and intensity under the Comfort Standard.

Related Treatments

Thermage FLX · Body · Ultherapy PRIME · Shoulder Filler

04 · QUESTIONS

Frequently Asked Questions

Does Onda reduce fat?

It addresses localized fat and firmness, not weight loss. Weight management is considered separately.

How many sessions do I need?

A general reference is 3–4 sessions about 4 weeks apart, varying by area and goal.

Does it hurt?

Usually performed without anesthesia, with moving warmth. Areas near bone may feel more intense.

Can Onda and Thermage be performed the same day?

Yes. Delivery methods and goals differ, allowing combination, including the same day. Fat and skin determine sequence, scope and intensity.

Can it be used on the body?

Dedicated body tips are used for abdomen, thighs and arms. See the body page for details.

References

References for general treatment information. Please confirm your individual plan with the medical team.