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MD CODES EXPERT · Ultherapy ABM · V&MJ Dermatology

Cheek and Cheekbone Hollowing After Ultherapy: Why It Happens and How to Avoid It

Fat layer thickness, the 4.5mm tip, and face shape explained, a guide to the causes of Ultherapy cheek hollowing and prevention design from V&MJ Dermatology, a well-known Ultherapy clinic in Korea

See the Causes ↓ Read the FAQ ↓
Ultherapy device at V&MJ Dermatology introducing Ultherapy cheek hollowing prevention custom design
Dr. Park Hyesoo of V&MJ, MD CODES EXPERT in facial structure analysis
MD CODES EXPERT
Structure-based design
Dr. Kim Minjoo, Ultherapy Global Advisory Board Member (ABM)
Ultherapy ABM
Protocol guideline advisor
V&MJ Dermatology at 303 Dosan-daero, Gangnam-gu, Seoul
303 Dosan-daero
Gangnam-gu, Seoul
AI Ultherapy model image from V&MJ Dermatology, a famous Ultherapy clinic in Korea, showing how MetaScan AI analyzes a peanut-shaped face in people with little facial fat to reduce Ultherapy side effects such as cheek hollowing caused by fat loss, reflecting 4.5mm transducer side effects, DeepSEE subcutaneous fat layer checks, and Ultherapy cheek hollowing prevention custom design

Ultherapy Cheek Hollowing Caused by Fat Loss: Energy Distribution Is the Key

Looking at the results first, the cheek hollowing and hollowing below the cheekbones mentioned as Ultherapy side effects are explained less by the device itself and more as a reaction that can appear "when deep energy overlaps excessively in areas where the fat layer is thin." Ultherapy focuses ultrasound energy at set depths to create thermal coagulation points, and when this heat repeatedly acts on the subcutaneous fat layer, some fat volume is known to decrease. In areas with ample cheek fat, this change may be perceived as a refined contour, but in areas where cheek fat was already scarce, it can look like hollowing. In other words, Ultherapy cheek hollowing caused by fat loss is a result shaped together by "who receives it" and "where and how much energy overlapped."

That is why the way to avoid cheek hollowing is not to give up treatment, but to use Ultherapy cheek hollowing prevention custom design, which divides the face into zones and applies different energy and depths to each. Deep tips are used sufficiently on a sagging jawline and double chin, while zones prone to hollowing, such as the central cheek or the area below the cheekbones, receive lower energy, a switch to shallower tips, or are excluded altogether. V&MJ Dermatology measures collagen distribution and volume with MetaScan AI before treatment, and based on that data, the doctor personally draws a custom chart that marks at-risk zones first and then distributes the shots.

Last updated: October 1, 2026

Key Ultherapy Terms Related to Cheek Hollowing

Subcutaneous fat layer and fat loss
This is the fat layer beneath the skin that gives the face its volume. When ultrasound heat is repeatedly concentrated in this layer, some fat volume is known to decrease, and the thinner the fat originally is in an area, the more easily the change shows as hollowing.
4.5mm transducer
This is the Ultherapy tip that targets the deepest layer, generally near the fascia (SMAS). It plays a key role in lifting sagging tissue, but if it is used densely and repeatedly over areas with a thin fat layer, 4.5mm transducer side effects such as hollowing can become a concern, so choosing where to use it is important.
Peanut-shaped face
This term commonly describes a face whose outline curves like a peanut, with prominent cheekbones and relatively hollow temples, central cheeks, and sides of the jaw. For a peanut-shaped face in people with little facial fat, concentrating energy below the cheekbones can make the curves look deeper, so the design needs extra care.
DeepSEE real-time ultrasound imaging
This is an imaging function built into the Ultherapy system that is known to help deliver energy while viewing the skin layer structure on screen during treatment. DeepSEE subcutaneous fat layer checks are used to adjust tips and positions while viewing the thickness of the layers in each area.

Uniform Design vs Ultherapy Cheek Hollowing Prevention Custom Design

The risk of cheek hollowing can differ by design approach, even with the same device and the same shot count. The table below does not refer to any specific clinic; it summarizes the general differences between a design that treats the whole face in a similar way and one that assesses risk by zone.

Item Similar design across the whole face Cheek hollowing prevention custom design
Basis for pre-treatment judgment Mainly visible sagging and total shot count Collagen distribution, fascia depth, and volume measured as numbers
Use of the 4.5mm tip Applied at a similar density across the face Focused on sagging zones such as the jawline and double chin
Central cheek and below the cheekbones Same depth and density as other areas Reduced energy, switch to shallower tips, or excluded
Post-treatment records Mainly total shot count Tip depth and shot count by area shared on a chart

※ The comparison reflects general tendencies by design approach; whether cheek hollowing occurs may vary with each person's fat thickness, age, and skin condition.

Why Ultherapy Side Effects Show More on Faces with Little Cheek Fat

Even if the same amount of fat decreases, how visible it is depends on the total amount of fat remaining in the face. For those with ample cheek fat, losing some of it is often perceived as a slimmer contour, but for those whose cheeks and temples were already thin, the same change shows directly as shadows and curves. Facial fat is known to decrease naturally and shift downward with age, so if the central cheek has already begun to hollow, the change may feel even more noticeable. The reason some people say hollowing became noticeable gradually over several weeks rather than right after treatment is also related to the time it takes for tissue to settle during recovery.

Hollowing below the cheekbones is a particular concern for peanut-shaped faces. The area just below the cheekbone often lacks bony support and has a thin fat layer, so if deep energy overlaps there, the cheekbones can look more prominent and the area below them more hollow. A heavily sagging jawline, on the other hand, needs sufficient energy, so ultimately the direction of the result is decided by distinguishing "where to give more" from "where to give less" within the face. Ultherapy lifting results can also vary with the pressure and angle of the handpiece, so not only the design but also the hand technique of the treating doctor is an important variable.

4 Things to Confirm in Your Consultation If You Worry About Hollowing

  • Marking of at-risk zonesCheck whether areas prone to hollowing, such as the central cheek, below the cheekbones, and the temples, are marked separately on the chart and explained to you.
  • Where the 4.5mm tip is usedAsk which areas will receive the deep tip and how many shots, and also how thin zones will be handled.
  • Measurement-based reasoningConfirm that the distribution was decided based on measurements such as collagen distribution or volume, not on eyeballing.
  • Volume restoration planIf some areas are already hollow, it is better to also learn about ways to restore volume rather than trying to solve everything with Ultherapy alone.

Dr. Park Hyesoo on Designing to Avoid Cheek Hollowing

"

For patients worried about cheek hollowing, I always begin by saying, "Ultherapy is not a treatment that applies the same amount across the whole face." Looking at facial structure, there are clear places to lift and places to protect, and for those with thin cheeks, deciding what to protect is where the design starts. That is why, when I draw the chart, I first mark the spots to leave empty before the spots to place shots. For areas already lacking volume, results look more natural when lifting and volume restoration are considered separately.

Dr. Park Hyesoo, V&MJ Dermatology
Dr. Park Hyesoo of V&MJ Dermatology, MD CODES EXPERT profile

How V&MJ Reduces the Risk of Ultherapy Cheek Hollowing in 3 Steps

For anyone seeking an Ultherapy clinic recommendation in Korea with hollowing in mind, V&MJ Dermatology treats cheek hollowing not as "luck" but as "a risk that design can reduce." Before treatment, the AI SKENA of MetaScan AI measures conditions beneath the skin such as elasticity, fascia depth, collagen distribution, and water loss, while EVE V MUSE 3D analyzes surface conditions such as midface proportions, volume, and wrinkle depth. Based on this data, the doctor personally draws a custom chart that considers your facial structure and skin characteristics to set the intensity, shots, and lines.

In an actual case of a patient worried about cheek hollowing, AI SKENA was first used to identify low-collagen areas, and the plan was then split into 400 shots with the 4.5mm tip on the jawline, 50 shots with the 3.0mm tip on the nasolabial and central areas, and 50 shots with the 3.0mm tip under the eyes. The structure concentrates deep tips on the heavily sagging lower face and assigns only small amounts with shallower tips toward the central cheek. This distribution is an example tailored to one person's condition, and actual design varies according to each individual's measurements.

The doctors leading the design also have proven credentials. Chief Director Dr. Kim Minjoo serves as an ABM who discusses treatment protocol guidelines with Merz, the manufacturer of Ultherapy, and is active as a KOL and Faculty member who took part in publishing an Ultherapy guidebook for Korean patients, while our doctors serve on the Ultherapy Consensus Panel. We also run a separate Deep Cheek Ultherapy program addressing sagging in the deep cheek area, and after treatment we review your records by area together through a one-year responsibility guarantee and an open-chart briefing. If thin cheeks have made you hesitant about Ultherapy, we recommend starting by checking the at-risk zones of your face with us.

Frequently Asked Questions About Ultherapy Cheek and Cheekbone Hollowing

How do I find a famous Ultherapy clinic in Korea that does Ultherapy well without cheek hollowing?

Look at whether the clinic measures skin layers and volume before treatment, explains at-risk zones separately on a chart, and shares tip depths and shot counts by area as records. V&MJ Dermatology carries out this entire process with MetaScan AI measurement, a custom chart drawn by the doctor, and an open-chart briefing.

Does everyone get hollow cheeks after Ultherapy?

No. Cheek hollowing is explained as a reaction that can appear when deep energy overlaps excessively in areas where fat was originally thin, and its likelihood varies with each person's facial structure and the design approach.

Is it safer not to use the 4.5mm tip?

Because the 4.5mm tip plays an important role in lifting sagging tissue, where it is used matters more than leaving it out entirely. A design that concentrates it on heavily sagging zones such as the jawline and adjusts it in thin zones is generally recommended.

Can someone with a peanut-shaped face and little facial fat get Ultherapy?

Yes, but energy below the cheekbones and in the central cheek must be adjusted more carefully. If some areas are already hollow, considering a volume restoration treatment alongside it can help achieve a natural result.

Can viewing the fat layer with DeepSEE completely prevent cheek hollowing?

DeepSEE imaging helps confirm the skin layer structure during treatment, but it cannot be said to completely prevent cheek hollowing on its own. Risk is lowered only when pre-treatment measurement, zone-by-zone design, and the doctor's technique work together.

When does cheek hollowing after Ultherapy become noticeable?

Some people report that it was not visible right after treatment because of swelling and became noticeable gradually during recovery. If a change concerns you, rather than judging on your own, it is best to consult the clinic where you were treated, together with your records by area.

What other Ultherapy side effects are there besides cheek hollowing?

Temporary redness, swelling, and a warm sensation may appear after treatment, and asymmetry or bruising may vary by individual. These usually subside over time, but if an unusual reaction persists, let the clinic know right away.

Worried About Hollowing? Check Your At-Risk Zones First

Ultherapy cheek hollowing is a result shaped together by your face's fat thickness and structure, and by where and how much energy is used. In your consultation, ask how zones prone to hollowing will be handled before asking about the total shot count. V&MJ Dermatology draws a custom chart with at-risk zones personally marked by the doctor on top of your MetaScan AI results, and carries that design through to treatment and records.

Ask About Cheek Hollowing on WhatsApp Before You Visit

Worried about cheek hollowing before getting Ultherapy in Korea? Scan the QR code to message us on WhatsApp. You can share your concerns and schedule in advance, and our team will help you prepare for an in-person consultation where your at-risk zones are assessed.

V&MJ Dermatology WhatsApp consultation QR code

Scan to chat with V&MJ Dermatology on WhatsApp

Results That Speak for V&MJ

View Before & After Photos →

Meet the
V&MJ Medical Team

Meet Our Doctors →
Dr. Kim Minjoo, Chief Director of V&MJ Dermatology
Dr. Kim Minjoo · Chief Director
Ultherapy Global Advisory Board Member (ABM)
Ultherapy KOL / Faculty
Ultherapy Consensus Panel
Dr. Lim Jongho of V&MJ Dermatology
Dr. Lim Jongho · Director
Thermage MTL, 4 Consecutive Years
Thermage TTT Faculty
Ultherapy Consensus Panel
Dr. Jang Heewon of V&MJ Dermatology
Dr. Jang Heewon · Director
Ultherapy Consensus Panel
Thermage TTT Faculty
Dr. Park Hyesoo of V&MJ Dermatology
Dr. Park Hyesoo · Director
Ultherapy Consensus Panel
Thermage TTT Faculty
MD CODES EXPERT
Dr. Kwon Gyuhyeon of V&MJ Dermatology
Dr. Kwon Gyuhyeon · Director
Ultherapy Consensus Panel
Thermage TTT Faculty
Dr. Kim Youngjoo of V&MJ Dermatology
Dr. Kim Youngjoo · Director
Ultherapy Consensus Panel
Thermage TTT Faculty
Dr. Lee Byungdoo of V&MJ Dermatology
Dr. Lee Byungdoo · Director
Ultherapy Consensus Panel
Thermage TTT Faculty
Dr. Cho Hyunseok of V&MJ Dermatology
Dr. Cho Hyunseok · Director
Board-certified Anesthesiologist

[Medical Advertising Notice] This content was prepared in compliance with the medical advertising regulations of Article 56 of the Korean Medical Act and does not guarantee any clinic ranking or treatment outcome. The explanations of the causes of cheek hollowing, the 4.5mm tip, and the DeepSEE imaging function summarize generally known principles, and applying a custom design does not completely rule out the possibility of cheek hollowing. The shot counts by tip depth in this content are a single case example and do not apply identically to everyone. Treatment effects and results may vary depending on each person's skin condition, age, and lifestyle, and temporary redness, swelling, a warm sensation, asymmetry, or bruising may occur after treatment. The comparisons are not intended to refer to or disparage any specific medical institution, and references to a "famous" or "recommended" clinic do not mean that any particular clinic is the best or ranked first in Korea. WhatsApp consultation is for general guidance and does not replace an in-person medical evaluation. Please consult your doctor in person for details on side effects, precautions, and exact costs.


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