InMode FX vs. Oligio: Which Fits Your Jawline?

If your jawline feels less crisp than it used to, you've probably run into two treatments that sound similar but aren't quite the same thing: InMode FX and Oligio. Both use radiofrequency (RF) energy to heat the deeper layers of skin and trigger new collagen, and both get recommended for jawline concerns. So why do people keep asking which one to pick?

The short answer: they deliver that heat very differently, and the difference changes how much it hurts, how many visits you'll need, and which specific concern each one actually addresses best. Neither one is a flat-out upgrade over the other. In this article, we'll cover how each device works, where InMode FX and Oligio actually differ, what pain and session count look like in practice, and how to figure out which one fits your jawline.

What Are InMode FX and Oligio?

InMode FX is a bipolar radiofrequency handpiece from InMode, a device line best known for body contouring and lower-face treatments. It's built to pass current between two electrodes on the same handpiece, and clinics commonly use it for submental fat (the soft tissue under the chin) along with general jawline definition.

Oligio, made by Wontech, is a monopolar radiofrequency device. Instead of working between two electrodes on the handpiece, it sends energy from a single electrode through the tissue to a grounding pad placed elsewhere on the body. That single-path setup lets it push heat deeper into the dermis in one pass, which is why it's usually positioned as a collagen-remodeling treatment rather than a fat-focused one.

Both fall under the broad umbrella of RF skin tightening, and both aim to stimulate new collagen production. Where they part ways is depth and delivery, and that's really what drives most of the practical differences below.

How They Work: Bipolar vs. Monopolar RF

InMode FX uses bipolar RF, meaning current travels between two electrodes built into the same handpiece. Because the current only has to bridge that short distance, it tends to stay relatively shallow and spread out over a broader area, warming more tissue at a gentler intensity. That's part of why it's a common pick for submental fat and general jawline contouring, where broader, more even heating is useful.

Oligio takes the opposite approach. Its monopolar RF sends current from a single handpiece electrode all the way through the tissue to a grounding pad, which lets energy travel deeper before it disperses. In practice, that means it can deliver a strong, concentrated dose of heat to the full thickness of the dermis in a single pass, which is where its collagen-remodeling reputation comes from.

One study on a bipolar RF device found measurable improvement in lower-face wrinkles and skin laxity when it was used on that region, which supports the idea that broader, shallower heating still meaningfully affects skin quality — it's just working through a different mechanism than a deep, single-pass treatment.

InMode FX vs. Oligio: Key Differences

Here's how the two stack up side by side once you break the mechanism down into practical terms.

Category	InMode FX	Oligio
RF Type	Bipolar (between two electrodes)	Monopolar (single electrode to grounding pad)
Primary Depth	Shallow to mid, spread broadly	Full dermal depth, concentrated
Main Strength	Submental fat and jawline contouring	Deep collagen remodeling and skin laxity
Sensation	Mostly warmth	Intense heat in a short burst
Typical Course	Multiple sessions over several weeks	Often one strong session
Numbing	Usually light or none	Topical numbing cream commonly used

The overlap is real: both are RF treatments aimed at building new collagen, and both can visibly improve jawline definition over time. The difference is in how aggressively that heat gets delivered and how many visits it takes to get there.

What to Expect: Pain, Sessions, and Timeline

Pain tends to track with intensity. Oligio delivers a strong dose of heat to the full dermis in one pass, so most people feel a distinct, hot sensation during treatment, which is why topical numbing cream is commonly used beforehand. InMode FX spreads its energy more broadly and shallowly, so most people describe it as warmth rather than pain, and numbing is often light or skipped. That said, pain tolerance varies a lot from person to person, so it's worth talking through intensity settings with your provider before you start.

Session count follows the same logic. InMode FX is typically done as a series, several sessions spaced out over a few weeks, gradually building results with each visit. Oligio is usually done as one strong session, with the skin left to rebuild collagen on its own afterward. Neither approach is inherently better — it's really a question of whether you'd rather spread treatment across a course or handle it in a single, more intense visit.

Results from both follow a similar collagen-driven curve: nothing dramatic happens the day of treatment, since the real change comes from new collagen forming over the following weeks. Most people start noticing a difference around the four-week mark, with results settling in by around twelve weeks. One evaluation of a monopolar RF device used on the face, neck, and jawline reported improvement in 77% of the 35 patients studied and satisfaction in 64%, which lines up with that gradual, weeks-to-months pattern rather than an overnight change.

Side Effects & Risks

Both InMode FX and Oligio are RF-based treatments, so the side effect profile is similar and generally mild. Expect some redness and warmth in the treated area right after your session, which usually fades within a few hours to a day. Mild swelling is common too, especially with Oligio's more concentrated heat, and it can linger a little longer than the redness does.

• Temporary tightness or tenderness: A mild pulling sensation or soreness for a day or two, which typically resolves on its own.
• Rare burns or blisters: RF devices carry a small risk of a burn if energy is delivered improperly, which is part of why treatment from an experienced provider matters.
• Not a fit for everyone: Pregnancy, active skin infections, and certain implanted devices, like pacemakers, are common reasons a provider might advise against RF treatment.

If you notice blistering, unusually severe pain, or skin that hasn't returned to its normal color within a day or two, seek medical care right away rather than waiting to see if it settles down on its own.

How Much Does It Cost?

Pricing for both treatments varies by clinic, the size of the area treated, and how many sessions your plan calls for. Because InMode FX is usually sold as a multi-session package and Oligio is often priced as a single strong treatment, a straight number-to-number comparison doesn't really tell the full story — one is a course, the other is closer to a single investment.

A consultation is really the most reliable way to get pricing that applies to your specific jawline and treatment plan. Current offers are listed at /en/promotion if you'd like a starting point.

Which One Is Right for Your Jawline?

If submental fat is a big part of what's bothering you, along with a general lack of definition, InMode FX's broader, fat-and-line-focused approach is probably the better starting point. If your bigger concern is skin laxity — the skin itself feeling loose or crepey rather than just soft — Oligio's deep, single-pass collagen push tends to be the better match.

It's also fine to think of these as sequential rather than competing. Some people do a course of InMode FX to address fullness and contour first, then follow up with a stronger Oligio session later for deeper tightening. Your provider can help you figure out which concern to tackle first based on what they see during a consultation.

The Bottom Line

InMode FX and Oligio are both radiofrequency treatments built to stimulate new collagen, but they get there in different ways. InMode FX uses bipolar RF to warm a broad, shallow area over several sessions, which makes it a solid fit for submental fat and general jawline contouring. Oligio uses monopolar RF to deliver a strong, concentrated dose of heat through the full dermis in a single pass, which is why it's the one more associated with deep collagen remodeling.

Neither is a universal upgrade over the other, and like most RF treatments, individual results vary. The right pick really comes down to whether your main concern is fat and definition or deeper skin laxity, and how you feel about spreading treatment across multiple visits versus handling it in one intense session.

If you're trying to figure out whether InMode FX or Oligio makes more sense for your jawline, a consultation is the best way to get an answer that's specific to your face. BeautyStone is a clinic in Seoul's Hapjeong area, and current offers are listed at /en/promotion.

Frequently Asked Questions

Q1. What's the main difference between InMode FX and Oligio for the jawline?

InMode FX uses bipolar RF, where current travels between two electrodes on the same handpiece, keeping the heat relatively shallow and spread over a broader area. Oligio uses monopolar RF, sending energy from a single electrode through the tissue to a grounding pad, which pushes heat deeper into the dermis in one pass.

Q2. Which one is better — InMode FX for submental fat or Oligio for skin tightening?

InMode FX is commonly used for submental fat (under-chin tissue) and general jawline contouring because of its broader, shallower heating. Oligio is usually positioned as a collagen-remodeling treatment because it reaches deeper into the dermis. Neither is a flat-out upgrade — it depends on your specific concern.

Q3. Does one of these treatments hurt more or require more sessions than the other?

How each device delivers heat does change how much it hurts and how many visits are typically needed, but the exact difference varies by individual sensitivity and treatment plan — it's worth discussing directly with your provider.

Q4. Are InMode FX and Oligio both considered radiofrequency skin-tightening treatments?

Yes, both fall under the broader category of RF skin tightening and both aim to stimulate new collagen production. They mainly differ in how deep the energy reaches and how it's delivered, which drives most of the practical differences between them.