Onda vs. InMode: Which Is Right for You?

If you've sat through more than one lifting consultation, you've probably heard both names — Onda and InMode — used almost interchangeably. They're not.

The short answer? Onda uses microwave energy to heat the deep dermis and fat layer in a single pass, while InMode relies on radiofrequency (RF) to warm the mid-dermis, tightening loose texture and refining pores at the same time. Same broad category — non-invasive skin tightening — different depth of attack.

In this article, we'll cover how each technology actually works, what a realistic results timeline looks like, who tends to do better with one over the other, and what it costs to find out for yourself.

What's the Difference Between Onda and InMode?

Onda and InMode both fall under the same broad umbrella — non-invasive lifting — but the type of energy each one uses, and the layer of skin it's aimed at, isn't the same.

• Onda delivers 2.45GHz microwave energy that reaches the deep dermis and subcutaneous fat in one pass, with surface cooling to protect the top layer of skin.
• InMode uses radiofrequency (RF) handpieces — Forma and Morpheus8 are common examples — that concentrate heat in the mid-dermis, smoothing texture and refining pores while it stimulates new collagen.

Same end goal — firmer, tighter-looking skin — but a different depth of attack. That's why two people with the exact same complaint (sagging along the jawline, say) can walk out of two different consultations with two completely different recommendations.

Factor	Onda	InMode
Energy type	Microwave (2.45GHz)	Radiofrequency (RF)
Depth targeted	Deep dermis + fat	Mid-dermis
Best for	Deeper sagging (jowls, double chin)	Pores, texture, looser surface skin
Typical downtime	Minimal — same-day return to normal activities	Minimal — same-day return to normal activities
When results peak	8–12 weeks	4–6 weeks, building through ~6 months

How Does Each Treatment Actually Work?

Onda's microwave energy is absorbed by the deeper dermis and fat, where it triggers immediate collagen contraction and kicks off new collagen production over the following weeks. A clinical report using a 2.45GHz microwave device found that after two sessions spaced 30 days apart, submental (under-the-chin) sagging scores improved from an average of 3.6 to 2.3 by the 12-week mark on a standard grading scale.

InMode's RF handpieces work on a different principle. They heat the dermis directly, and research on RF-based skin tightening shows collagen fibers contract almost immediately, followed by a slower, ongoing increase in dermal collagen density over the following months. That's part of why InMode results tend to build gradually instead of showing up all at once.

In plain terms: Onda works from the fat layer up, InMode works from the mid-dermis out. If your main concern lives deep — a heavy jawline, a stubborn double chin — Onda has more to work with. If it's surface-level (pores, fine texture, mild looseness), InMode is doing more of its work exactly where you need it.

What to Expect: A Realistic Timeline

Neither treatment is an overnight fix, and a good provider will tell you that upfront.

• Day of: Skin often looks slightly tighter right away — that's swelling and immediate collagen contraction, not the final result.
• 24–48 hours: Mild redness or warmth is common and typically settles on its own.
• 4–6 weeks: New collagen starts showing up; InMode's surface-level changes tend to become noticeable around here.
• 8–12 weeks: Onda's deeper remodeling usually reaches its peak — this is when providers recommend evaluating results.
• Ongoing: According to the American Academy of Dermatology, non-ablative RF treatments often bring a bit of immediate tightening, with fuller results appearing around the six-month mark as new collagen fills in.

How long results stick around varies from person to person, but Onda's deeper collagen remodeling tends to hold for roughly 6–12 months, while InMode's more surface-level effect typically runs 4–9 months. Your own collagen turnover, sun habits, and weight stability all play a role — individual results vary, and one treatment isn't a fair basis for comparison until you're past the 8–12 week mark.

Who's a Better Candidate for Onda vs. InMode?

Neither treatment is universally "better" — it comes down to where your main concern actually sits.

Onda tends to be the better fit if:

• Your main concern is deeper sagging — jowls, a double chin, or a blurred jawline
• You've lost some definition after weight loss or other body changes
• You'd rather address a deep concern in one focused approach
• You're past your 40s, when collagen naturally starts thinning

InMode tends to be the better fit if:

• Pores, texture, and mild surface looseness bother you more than deep sagging
• Your concern sits higher on the face — cheeks, upper cheek area, forehead
• You're in your early 30s to early 40s, when collagen is still relatively plentiful
• You want minimal downtime and don't mind a more gradual build

Talk to your provider first if:

• You're pregnant or breastfeeding
• You have a pacemaker or another implanted medical device (RF and microwave energy are generally contraindicated)
• You have active inflammation, acne, or a herpes outbreak in the treatment area
• You're prone to keloid scarring
• You've had another deep, invasive procedure in the same area within the past three months

Side Effects and Safety to Know Before You Book

Both Onda and InMode are non-invasive, and serious complications are rare when they're performed by an experienced provider.

• Redness and warmth: Common right after treatment and usually settles within a day or two.
• Mild swelling or tightness: Can linger for a couple of days, especially after Onda's deeper heating.
• Temporary numbness or tingling: Less common, and typically resolves on its own.

If you notice blistering, worsening pain, or discoloration that doesn't fade within a few days, contact your provider right away — those aren't expected side effects.

Because both technologies rely on heat, providers generally recommend spacing sessions apart rather than stacking multiple heat-based treatments on the same day — more on that in a moment.

How Much Do Onda and InMode Cost?

Pricing for both treatments varies by clinic, treatment area, and how many sessions your provider recommends — Onda is often done as a single session or a 2–3 session package, while InMode may involve a short series to layer multiple handpieces. Packages typically bring the per-session cost down compared to paying one at a time.

Rather than throw out a number that might not reflect current rates or your specific case, the most reliable way to get a real quote is a consultation. If you're weighing options in Seoul, BeautyStone — a dermatology clinic in the Hapjeong area — lists current offers at /en/promotion, which is worth a look before you commit anywhere else.

Is It Worth It? Making the Call

Onda and InMode aren't rivals so much as two tools aimed at two different problems. If you've got both a deep sagging concern and surface texture issues, it's not unusual for a provider to recommend one now and the other later, spaced a few weeks apart, rather than tackling both at once.

That said, neither one is a magic bullet. Results build gradually, they fade over time, and how well they work depends on your skin's own collagen response — not just the machine. If your main goal is dramatic, same-day change, a non-invasive treatment probably isn't the right category to begin with.

Cost alone shouldn't be the deciding factor, either. A quick look at your skin thickness, fat layer, and surface texture — the kind of assessment a board-certified dermatologist does at a consultation — tends to be a better predictor of which treatment will actually move the needle for you.

The Bottom Line

Onda and InMode both fall under non-invasive lifting, but they're not interchangeable:

• Onda reaches deeper — fat and lower dermis — making it a better fit for jowls, a double chin, or lost jawline definition
• InMode works the mid-dermis, refining pores, texture, and milder surface looseness
• Results build over weeks to months for both, and individual results vary
• Combining them is possible, but it's typically spaced apart rather than done the same day

Like any procedure, both come with trade-offs — some redness, some swelling, and a results timeline that asks for patience. Ultimately, the choice depends on where your concern actually lives, your skin, and your goals.

If you're considering Onda, InMode, or both, a consultation is the best way to find out what actually fits your face. BeautyStone is a dermatology clinic in Seoul's Hapjeong area — see current offers at /en/promotion.

Frequently Asked Questions

Q1. How long do results from Onda or InMode last?

It varies by person, but Onda's deeper collagen remodeling tends to last around 6–12 months, while InMode's surface-focused effect typically runs 4–9 months. Sun protection, your own collagen turnover, and weight stability all affect how long results hold. Repeat sessions tend to extend results, so it's worth reassessing around the 6–12 month mark rather than judging from a single treatment.

Q2. Does Onda or InMode hurt more?

Both use cooling or numbing to manage comfort, but the sensation differs. InMode's mid-dermis heating tends to feel like a warm, prickling sensation, while Onda's deeper heating feels more like a heavy, steady warmth. Pain tolerance varies a lot from person to person — if you're concerned, mention it at your consultation so your provider can adjust the energy settings.

Q3. If I'm trying both for the first time, which should I start with?

It usually comes down to which layer bothers you more. If a heavy jawline or double chin is the priority, start with Onda. If pores, texture, or mild surface looseness are the bigger concern, InMode is the more natural starting point. Either way, it's common to evaluate results at the 8–12 week mark before deciding on a next step.

Q4. Can I get Onda and InMode done on the same day?

Generally, no — most providers don't recommend it. Both rely on heat, and stacking two heat-based treatments in one session can add unnecessary strain to your skin and recovery, even though neither one involves real downtime on its own. A more common approach is to space them a few weeks apart once the first treatment has settled.