When Your Jawline Starts to Fade in the Mirror — Is Ultherapy Right for You?
Why Ultherapy Stands Apart from Other HIFU Procedures: The Answer Lies in SMAS Layer Coagulation Point Precision

When Your Jawline Starts to Fade in the Mirror — Is Ultherapy Right for You?
As the weather cools down, my clinic gets busy with Lifting consultations.
"I couldn't do it in the summer because of all the sweating,
but I'd love to get my jawline in shape before winter" — I hear this from so many patients.
Today, I'd like to walk you through everything, step by step.
Where Ultherapy and Shurink Actually Differ
Ultherapy delivers High-Intensity Focused Ultrasound (HIFU)
deep into the SMAS Layer of the skin, creating Thermal Coagulation Points to achieve a Lifting effect.
The SMAS Layer is the facial fascial layer —
it's actually the same layer that plastic surgeons physically lift
during a facelift surgery.
Shurink and other HIFU devices work on the same basic principle.
But here's where it gets nuanced —
even within the category of "HIFU,"
the precision with which coagulation points are placed at the correct depth varies significantly by device.
Ultherapy uses real-time ultrasound imaging
to visually confirm that energy is being delivered precisely to the SMAS Layer —
not somewhere above or below it.
Shurink-type devices, on the other hand, operate without that imaging,
relying instead on the assumed depth of the cartridge.
The Real Reason Ultherapy Delivers Different Results from Other HIFU Procedures
The essence of Ultherapy's effectiveness lies in
"how precisely the SMAS Coagulation Points are placed at the correct depth."
Even with the same HIFU technology, if the depth accuracy is off,
you end up with all the energy delivered — but no Lifting to show for it.
Last month, I saw a patient in her late 40s.
She told me, "I've had HIFU done four times at other places,
but each time it just caused Swelling and nothing more."
Looking at her face, she didn't have excess fat,
and her skin was on the thinner side compared to average.
In patients like her, the SMAS Layer tends to sit
slightly shallower than the standard depth of 4.5mm.
And here's the critical point.
Most HIFU devices assume that using a 4.5mm cartridge
means the coagulation point will land at exactly 4.5mm.
But what if her actual SMAS Layer was at 3.8mm?
The energy would bypass the SMAS entirely, accumulating in the fat layer,
resulting in volume loss rather than Lifting.
With Ultherapy, I can visualize that layer directly with ultrasound imaging before the procedure begins.
For patients with a shallower SMAS, I start with a 3.0mm cartridge;
for those with a deeper SMAS, I primarily use the 4.5mm cartridge.
For this particular patient, I used a 7:3 ratio of 3.0mm to 4.5mm cartridges across two sessions,
and her jawline showed noticeable improvement three months after the second procedure.
The number of coagulation points also matters.
A full-face Ultherapy session typically involves
800 to 1,000 shots,
and the proportion of those shots that land precisely within the SMAS Layer
is what separates one device from another.
To be straightforward about it —
it's not about "how many shots you received,"
but "how many of those shots landed at exactly the right depth" that determines your results.
Ultherapy's effectiveness isn't determined by "how many megahertz the ultrasound is" —
it comes down to "whether the energy actually reached the depth where your SMAS Layer sits."
Because skin thickness varies considerably from person to person,
confirming the target depth through imaging before firing makes a real difference in outcomes.
Who I Recommend Ultherapy For — and Who I'd Advise to Reconsider
It does vary case by case,
but here's generally how I break it down.
That said, Ultherapy isn't the right answer for everyone.
The Pain during the procedure tends to be more intense compared to other HIFU devices,
and the cost can be two to three times higher.
So for patients with a slimmer face
and minimal cheek fat,
I'll often recommend Filler or Sculptra first.
Applying aggressive Lifting alone can actually make the face appear more gaunt.
However, for patients in their 40s or older with a noticeably softened jawline
where SMAS laxity is the primary cause,
Ultherapy remains the most reliable option available.
Three Things to Check Before Your Ultherapy Consultation
Q1. How long do results from a single Ultherapy session last?
A. I generally tell patients to expect results to last around 12 to 18 months,
but the truth is there's significant individual variation.
Patients whose weight remains stable
and who are diligent about sun protection may see results last up to two years,
while those who undergo rapid weight loss
may notice a loss of definition as soon as six months in.
Q2. Wouldn't it be better to have Shurink done multiple times instead?
A. This one is a bit nuanced.
The cost of three to four Shurink sessions is roughly comparable to a single Ultherapy session.
Results vary depending on the individual —
for patients with significant sagging, ten rounds of Shurink may still fall short of what a single Ultherapy session can achieve,
while for early-stage Elasticity loss, Shurink can absolutely be sufficient.
So rather than declaring one categorically better than the other,
the right starting point is always an honest assessment of your current skin condition.
Q3. I've heard Ultherapy can cause the cheeks to look sunken — is that true?
A. That's actually accurate.
It's a commonly misunderstood point —
Ultherapy itself doesn't dissolve fat,
but if energy inadvertently accumulates in the fat layer, volume loss can occur.
That's why I'd recommend avoiding clinics that take a one-size-fits-all approach —
"800 shots full-face, same for everyone" — without first analyzing your facial structure.
Always make sure the clinic explains in advance
how they plan to distribute shots across different depths for your specific anatomy.
If you have any questions or uncertainties, I'm happy to assess you in person and guide you from there. This has been Dr. Wi Young-jin.











