InMode FX vs FORMA: What’s the Difference, and Why Doesn’t It Work? The Treatment Interval Is More Important

Hello.

This is Beauty’s Doctor, Wi Youngjin.

If you’re reading this post,

chances are the first thing that catches your eye in the mirror is

a double chin or a less defined jawline.

In the process of looking into InMode lifting,

two names almost always come up.

Those are FORMA and FX.

FORMA is

👉 focused on improving skin elasticity

FX is

👉 focused on reducing fat + refining contours

That’s the easiest way to understand them.

In particular, FX is

often used to reduce the fat that blurs the facial line,

such as under the chin, beneath the jaw, and in the buccal area,

so

✔ when the effect starts to show

✔ how many sessions are needed

it’s important to know these details accurately before starting.

🔎 What Is InMode FX?

Why it’s used so often for the chin area

InMode FX is

a combination-energy device that uses

radiofrequency (RF) and high-voltage pulsed energy (HVP) together.

Unlike ordinary lifting,

it is not simply about pulling the skin upward;

it directly targets the fat layer beneath the skin.

In this process,

✔ fat is reduced

✔ the skin contracts

and as a result,

👉 the facial contour becomes more defined.

It is especially suitable for areas such as

✔ a double chin

✔ fat under the chin

✔ the buccal area

where the line looks blurred because of fat.

In conclusion, FX should be viewed not as simple lifting,

but as a contouring treatment that refines the shape.

⚙️ How InMode FX Works

Why fat under the chin decreases

The key to FX is

how deeply and accurately the energy is delivered.

1️⃣ Vacuum suction step

The skin is lifted and fixed in place,

so the energy does not spread out

and is concentrated in a specific layer.

2️⃣ RF + HVP delivery

As heat and electrical stimulation act on the subcutaneous fat layer at the same time,

microscopic damage occurs to the fat cell membranes.

Over time after that,

the damaged fat cells gradually die,

and are naturally eliminated from the body.

What matters here is that

it is not only the fat that decreases.

As the heat also triggers a contraction response,

✔ the skin tightens

✔ it adheres more closely over the reduced fat

✔ the line becomes more defined

So with FX,

you can expect both

✔ fat reduction

✔ skin tightening

at the same time.

⏱ When Does the InMode Effect Appear?

When can you feel the change?

This is the question I get most often.

To be clear,

FX is not a treatment that produces dramatic changes immediately.

Because the fat cells gradually die,

changes appear progressively over time.

⏱ Week 1–2

As swelling goes down,

the facial line feels slightly more refined

⏱ Week 2–4

As fat under the chin begins to decrease,

the contour change starts to become visible

⏱ Week 4–6

As tissue contraction settles in,

the most defined line forms

In most cases,

clear changes are felt starting around week 3 to 4.

Another important point is that

once fat cells die,

they do not come back.

Therefore, the changes after the InMode effect period

are relatively long-lasting.

🔁 InMode Treatment Interval

The standard that matters more than the number of sessions

“How many times do I need to do it?”

This is a question I hear very often.

But what actually determines the result is

not the number of sessions, but the plan.

Even with the same FX treatment,

✔ treatment time

✔ energy intensity

✔ treatment area

can lead to large differences in outcome.

✔ If the treatment time is too short,

it may end before reaching the target temperature,

resulting in little to no effect.

✔ If the intensity is too strong,

too much fat may be reduced,

which can increase the risk of side effects such as hollow cheeks.

In general,

👉 about 15–20 minutes for the double chin area

👉 repeated 2–3 times

is common,

but the key is to check progress along the way

and adjust the interval and number of sessions.

In the end, what matters is

a personalized plan that matches your facial structure and amount of fat.

Getting more treatments is not automatically better.

An incorrect InMode treatment interval can lead to

✔ insufficient results

✔ unnecessary stimulation

so

it is important to create a plan based on a proper diagnosis.

✔ Who Is This Suitable For?

If any of the following apply,

you may want to consider FX.

📌 If a double chin does not go away easily

📌 If fat under the chin makes the face look heavy

📌 If the buccal area makes your expression look dull

📌 If the jawline does not change even after dieting

📌 If you want to refine your contour naturally without surgery

📌 Key Summary

🟡 Principle

RF + HVP → fat cell damage + skin contraction

🟡 Purpose

Focuses on contouring rather than lifting

🟡 InMode effect period

Changes begin around 3–4 weeks

Most noticeable around 6 weeks

🟡 InMode treatment interval

Customized planning matters more than the number of sessions

🟡 Caution

Short treatment time = insufficient effect

Excessive intensity = risk of hollow cheeks

When you want to define the jawline,

lifting that only pulls the skin may not be enough.

In many cases,

what matters more is how fat is reduced and refined.

FX is not a method that simply pulls everything upward,

but an approach that rebalances the volume and line of the face.

The InMode effect period and InMode treatment interval can vary from person to person,

but in the end, the most important thing is

how personalized the treatment plan is.

More important than the device itself is the plan that creates the result.

Please be sure to check this before treatment. 😊

Thank you for reading.

This was Wi Youngjin.