Small Face Solutions: 5 Facial Slimming Treatments and What Defines a Slim Face

“My face looks bigger than other people’s…”
“Do facial slimming massages or facial rollers actually work?”
“Can visiting a clinic help me achieve a slimmer face?”

Many people try massages and other methods in pursuit of a slimmer face. While hairstyles and makeup can create the temporary illusion of a smaller face, they do not necessarily reduce face size in any fundamental way.

This page covers the following topics to help you work toward a slimmer face:

  • What defines a “small face”
  • Reasons why your face may appear larger
  • Treatment options available at clinics
  • Habits to avoid in facial slimming care

Visiting a clinic is one of the more direct paths toward achieving a slimmer face. If self-care has not been giving you the results you hoped for, we encourage you to use this page as a reference.

Table of Contents

  • 1 What Defines a “Small Face”? Average Measurements for Japanese Adults
  • 2 Why Does My Face Look Large? Common Causes and Concerns
  • 3 5 Clinic Treatments for a Slimmer Face
    • 3.1 Botulinum Toxin Injections
    • 3.2 HIFU
    • 3.3 Fat-Dissolving Injections
    • 3.4 BNLS
    • 3.5 GLP-1
  • 4 3 Habits to Avoid in Facial Slimming Care
  • 5 The Facial Slimming Treatment Process at IC Clinic
  • 6 Frequently Asked Questions About Facial Slimming Treatments
    • 6.1 Q. Do facial slimming massages work?
    • 6.2 Q. Is facial bone adjustment (small face correction) effective?
  • 7 Visit IC Clinic for Facial Slimming Treatments

What Defines a “Small Face”? Average Measurements for Japanese Adults

There is no single definitive standard for what counts as a “small face.” To help you assess your own face size objectively, here we introduce the average facial measurements for Japanese adults. If your measurements fall below these averages, you could reasonably consider yourself to have a smaller-than-average face. The average facial dimensions for Japanese adults are as follows:

Female Male
Vertical length (total head height) 21.8 cm 23.19 cm
Horizontal width (head width) 15.33 cm 16.08 cm

(Reference: Japanese Head Dimensions Database 2001 | Artificial Intelligence Research Center)

For a familiar point of comparison, a standard tissue box is roughly 24 cm tall. Since the face is three-dimensional and can be tricky to measure, comparing it to a tissue box may give you a helpful sense of scale.

If your measurements came out above average, consider exploring facial slimming care options.

Why Does My Face Look Large? Common Causes and Concerns

There is rarely just one reason why a face appears larger. Even beyond the bone structure you are born with, various factors can make the face look bigger.

The four main causes are as follows:

Condition Cause
Puffy face ・Fluid retention in the face due to excessive alcohol or salt intake (edema)
Round face ・Excess fat around the cheeks
Wide jawline (square face) ・Overdeveloped jaw muscles (masseter hypertrophy)
・A naturally prominent jaw bone structure
Double chin ・Fat accumulation associated with excess body weight
・Forward head posture or rounded shoulders

If puffiness or excess fat is making your face appear larger, addressing those factors may help improve your appearance. However, self-care approaches such as facial slimming tools or massage are closer to symptomatic relief, so sustained results may be difficult to achieve.

Furthermore, most self-care approaches to facial slimming lack a solid medical basis. If you are looking to improve the size of your face more efficiently, consulting a clinic is worth considering.

5 Clinic Treatments for a Slimmer Face

At a clinic, a doctor can assess the reasons why your face appears larger and recommend a treatment approach tailored to your individual needs.

The five treatments we offer for facial slimming are:

  1. Botulinum Toxin Injections
  2. HIFU
  3. Fat-Dissolving Injections
  4. BNLS
  5. GLP-1

Below, we explain the effects and features of each treatment in detail.

Botulinum Toxin Injections

Botulinum toxin injections are slimming injections that work by relaxing targeted muscles.

When the masseter muscle—the muscle responsible for chewing, located around the jaw—is overdeveloped, botulinum toxin injections can help relax it and work toward a slimmer facial contour. Please note that if a larger appearance is caused by bone structure or fat, botulinum toxin injections are unlikely to be effective.

The effects of botulinum toxin injections typically last around three to four months. Results vary among individuals, but the effects generally diminish considerably by around six months. Even so, the treatment may offer more sustained facial slimming results than self-care, with fewer sessions required.

For more details about our botulinum toxin injection treatments, please visit the page below.

What Are Botulinum Toxin Injections? 5 Potential Cosmetic Benefits and Possible Side Effects

HIFU

HIFU (High-Intensity Focused Ultrasound) is a treatment that aims to address facial sagging and support a slimmer facial appearance by firming the skin from within using focused ultrasound energy and heat.

The underlying cause of facial sagging is often the weakening of the SMAS (superficial musculoaponeurotic system), a layer of muscle and connective tissue beneath the skin. HIFU works to tighten the SMAS, which may help improve sagging while supporting a more defined facial contour.

Rather than delivering dramatic changes immediately after the session, HIFU is characterised by gradual results that become noticeable over approximately three months. Once the SMAS is tightened, it tends to be less likely to return to its previous state, so many patients are able to enjoy longer-lasting results.

Since HIFU tends to be less effective once sagging has become more pronounced, it is worth considering treatment earlier, as soon as you begin to notice age-related laxity.

For more details about our HIFU treatments, please visit the page below.

What Is HIFU? “Ultraformer III” — A Treatment Option for Addressing Facial Sagging

Fat-Dissolving Injections

Fat-dissolving injections are a treatment that approaches facial slimming by targeting concerns such as a double chin or excess cheek fat.

A key feature of this treatment is its ability to reduce fat in specific areas by injecting directly into the target site. Because the injections work on the fat cells themselves, they may make it less likely for fat to re-accumulate in the treated area.

In addition, the treatment may also help improve the appearance of concerns such as drooping eyelids or a fuller-looking nose.

Fine needles are used for the injections, helping to minimise discomfort during the procedure. With each session taking around 10 minutes and a relatively mild recovery period, the overall burden on patients tends to be low.

The number of sessions required varies depending on the area and extent of treatment, but a course can often be completed within approximately one to three months.

For more details about our fat-dissolving injection treatments, please visit the page below.

What Are Fat-Dissolving Injections? Is Targeted Fat Reduction Possible for the Face and Thighs? 3 Potential Effects and Risks to Be Aware Of

BNLS

BNLS is also an injection designed to reduce fat within the body, and is commonly used for targeted facial slimming.

Conventional fat-dissolving injections carry a risk of side effects such as swelling and warmth at the injection site. BNLS, however, contains deoxycholic acid derived from plant-based sources, which is associated with a lower likelihood of such side effects.

BNLS is available in two formulations: BNLS Neo and BNLS Ultimate. BNLS Neo offers slimming effects at a lower price point, while BNLS Ultimate is expected to provide a higher level of efficacy, though at a higher cost.

For more details about our BNLS treatments, please visit the page below.

What Are BNLS Injections? 3 Potential Effects and the Differences Between BNLS Ultimate and BNLS Neo

GLP-1

GLP-1 treatment refers to injections that administer GLP-1, a hormone that helps reduce appetite. By increasing GLP-1 levels in the body, the treatment may help suppress appetite, support weight reduction, and contribute to a slimmer facial appearance.

GLP-1 is a hormone that naturally occurs in the body. Higher levels of GLP-1 allow you to feel satisfied with smaller amounts of food, which may help make weight gain less likely. Conversely, lower GLP-1 levels can make it harder to control appetite, potentially leading to overeating and weight gain.

Since GLP-1 is broken down in the digestive system when taken orally, administering it directly via injection is an important part of this approach.

The treatment may offer the following potential benefits:

  • Appetite suppression (which may also help reduce puffiness)
  • Support for fat metabolism
  • A boost to basal metabolic rate

This treatment may be a suitable option for those looking to slim a face that appears fuller due to fat or puffiness.

For more details about our GLP-1 treatments, please visit the page below.

What Are GLP-1 Injections? Potential Weight Management Effects and Side Effects Explained

3 Habits to Avoid in Facial Slimming Care

There are three habits to be mindful of when working toward a slimmer face:

  1. Excessive facial slimming massage
  2. Facial “bone adjustment” treatments without medical basis
  3. Poor posture in daily life

When performed correctly, facial massage may help reduce puffiness and support a slimmer appearance. However, rubbing the skin too vigorously can damage it and potentially lead to pigmentation issues, dark spots, or sagging.

We also advise caution regarding facial correction treatments that lack medical evidence. Japan’s Consumer Affairs Agency has stated that advertisements claiming to correct distortions or misalignments of the head or facial bones by hand are without scientific basis.
(Reference: News Release | Consumer Affairs Agency)

Additionally, sustained poor posture can contribute to a more prominent jaw appearance. Try to correct posture habits such as rounding your back, and be mindful of not allowing your head to drift forward when looking at your phone or computer.

The Facial Slimming Treatment Process at IC Clinic

The general flow of facial slimming treatments at IC Clinic is as follows:

  1. Consultation
    We begin with a consultation to understand your concerns and recommend a treatment approach suited to your individual needs. Our goal is to support you on the path toward your ideal facial appearance. Please feel free to share any questions or concerns you may have at this stage.
  2. Marking
    Before the treatment begins, the target area is marked on the skin. This helps ensure the procedure is carried out smoothly and accurately. Marking may not be required for all treatment types.
  3. Treatment
    The treatment is performed on the marked area. Anaesthesia is available if needed — please do not hesitate to let us know.

※The specific steps may vary depending on the treatment.

Frequently Asked Questions About Facial Slimming Treatments

Below, we answer some of the most frequently asked questions about facial slimming treatments.

If you are considering ways to achieve a slimmer face, we hope this section is helpful.

Q. Do facial slimming massages work?

Massage may help improve puffiness and support a slimmer-looking face.

However, the right technique and consistent effort are important. Facial rollers are one popular option, but without ongoing care such as exercises to strengthen the facial muscles, noticeable changes can be difficult to observe.

Self-care is relatively accessible and low in cost, yet objective results can be hard to achieve even with long-term practice. If you are looking for more effective facial slimming care, cosmetic medical treatments for facial slimming may be worth considering.

Q. Is facial bone adjustment (small face correction) effective?

There is no medical evidence to support facial bone adjustment treatments.

At relaxation salons and similar establishments, staff without nationally recognised medical qualifications are permitted to perform these treatments.

Japan’s Consumer Affairs Agency has stated that advertisements claiming to correct distortions of the head or facial bones by hand are without scientific basis. In addition, if any unexpected situation were to arise during a facial correction session at a relaxation salon, there is no guarantee that a qualified medical professional would be on hand to respond appropriately.

Visit IC Clinic for Facial Slimming Treatments

Self-care approaches such as facial massage and facial rollers may offer some slimming effect, but any results tend to be temporary.

Without consistent, well-informed care, it can be difficult to notice visible changes along the facial contour.

If you are looking to work toward a slimmer face more efficiently, visiting a clinic is an option worth considering.

At IC Clinic, we work to identify the underlying causes of your facial concerns and propose a treatment plan tailored to each individual. We aim to support you through the treatment process so you can feel at ease — please feel free to reach out to us for a consultation.

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