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Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist>

WELLS Dermatology CLINIC / WELLS美容皮膚科 · 웰스피부과 본원 블로그 · March 3, 2026

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> ​ ​ Hello, I am Yoo Hyo-seob, a dermatologist with 23 years of e...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: WELLS Dermatology CLINIC / WELLS美容皮膚科

Original post date: March 3, 2026

Translated at: April 25, 2026 at 5:32 AM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 1

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist>

Hello,

I am Yoo Hyo-seob, a dermatologist with 23 years of experience.

Interest in recent weight-loss treatment injections such as Wegovy and Mounjaro has increased.

Because they offer fast and noticeable weight-loss effects, many people are considering them.

In fact, many people say that their weight has dropped in a short period of time and their health indicators have improved.

However, during consultations, I hear another story.

“Even though I lost weight, my face looks so tired.”

“I’ve been told I look older than before.”

In particular, after rapid weight loss, more people are worrying about changes such as the front cheeks and side cheeks becoming hollow and the cheekbones becoming more prominent, making the face look like a so-called “peanut-shaped face.”

The weight goes down, but the impression looks tired and seems older.

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 2

The basic direction of aging is mostly “hollowness and sagging.”

When rapid dieting is added on top of that, facial fat decreases quickly and the change becomes even more noticeable.

The important thing is that this is not simply because you lost weight.

The face has a three-dimensional structure, and volume, elasticity, fat distribution, and muscle balance all work together.

Table of Contents

  1. Why “hollowed cheeks” become more severe after dieting

  2. Hollow areas should be filled, and sagging areas should be refined

  3. The most important thing is “design”

  4. Why “hollowed cheeks” become more severe after dieting

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 3

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 4

When body weight drops rapidly, the body first reduces fat from areas with more fat.

The face is also an area greatly affected by the fat layer.

So the following two changes are typically seen.

Front cheek hollowing: the nasolabial folds become more prominent, and the midface looks flatter, creating a tired impression.

Side cheek hollowing: the cheekbones appear relatively more prominent, and the middle area looks empty, which can make the face look “peanut-shaped.”

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 5

People who usually do not receive anti-aging care such as tightening or lifting tend to feel these changes more strongly.

In the end, the core issue is not just weight loss,

but a complex accelerated aging process in which volume loss, reduced elasticity, and sagging occur at the same time.

  1. Hollow areas should be filled, and sagging areas should be refined.

The basic principle of anti-aging is clear.

Fill in the hollow areas,

and refine the sagging areas.

When the front cheeks are hollow, volume restoration is needed, and there are various treatment options.

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 6

Filler: immediate volume restoration is possible, but caution is needed regarding vascular side effects.

Autologous fat grafting: it can add a relatively large amount of volume, but the recovery process and survival rate must be considered.

Collagen-inducing injections such as Sculptra: gradual and natural improvement is possible, but it is difficult to create a large amount of volume at once.

Each method has clear pros and cons, so rather than choosing simply because it is “trendy,” you should consider your facial structure and the speed of change you want.

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 7

Side cheek hollowing is more difficult.

The area below the cheekbones often has strong adhesion, so in some cases it cannot be fully corrected with filler alone.

Therefore, it is important to accurately assess the tissue characteristics and the degree of adhesion.

Also, if the lower area looks bulky and sagging,

Ulthera lifting - reduction of lower facial fat Botox - reduction of the masseter muscles and salivary glands

can be used to reduce lower volume and balance the face by filling the center area.

In other words, rather than trying to solve everything with one procedure, a “comprehensive design that restores structural balance” is important.

  1. The most important thing is “design.”

The most important thing in anti-aging treatment is not the procedure itself.

Immediate change Natural and gradual improvement Clear contours A softer impression

Detailed design with a specialist who has extensive experience in treatment effects must come first.

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 8

Aging does not appear as a single symptom.

It is a complex mix of hollowness, sagging, reduced elasticity, fat imbalance, and muscle overdevelopment.

Therefore, a plan tailored to my skin condition is needed, using Ulthera, thread lifting, filler, Botox, and other treatments.

And the face is not just a treatment area.

It contains a person’s time, expressions, and emotions.

That is why I always think first not about “how much should be filled,” but about “what kind of face and impression should be restored.”

In closing, rapid weight loss can be a positive choice that changes body shape and improves health.

However, there are also cases where unexpected early aging occurs due to facial volume loss.

Hollow cheeks and a peanut-shaped face are not simply cosmetic issues, but the result of structural balance breaking down.

Diet Treatment Side Effect: Hollowed Cheeks? Causes and Treatment Methods ‘Complete Guide’ <Dermatology Specialist> image 9

However, they can be sufficiently corrected, and natural improvement is possible without overdoing it.

The important thing is not to blindly follow popular procedures,

but to accurately understand the structure of your own face,

clearly set the direction you want,

and then establish a strategy that matches it.

If you are worried about facial changes after dieting, rather than judging on your own, I recommend first checking the structural cause through 충분한 consultation with a specialist.

The key to a youthful-looking face is neither excessive volume nor excessive lifting.

Balance, harmony, and naturalness.

Finding that direction together is the beginning of anti-aging.

Thank you for reading this long post.

This was Yoo Hyo-seob, Director of Wells Dermatology.

[Recommended further reading]

Best 1. Introduction

Best 2. Collagen injection for under-eye hollowness? Answers to all your questions

Best 3. Re2O? A complete summary of the pros and cons of collagen injections

Wells Dermatology Main Phone Number (click the number below to connect)
02 - 542 - 2372
Consultation Hours
Weekdays 10:00 ~ 20:00
Saturday 10:00 ~ 17:00
Lunch Break 13:00 ~ 14:00
Closed on Sundays and public holidays

This post was written directly by Wells Dermatology Clinic and complies with all laws related to medical advertising other than Article 56, Paragraph 1 of the Medical Service Act.

Please note that all surgeries and procedures may be accompanied by side effects depending on the individual, so please make a careful decision about whether to proceed after receiving sufficient guidance from the medical staff.

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