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2025.12.02
Is Hyaluronic Acid Injection for Breast Augmentation Dangerous? | Bianca's Plastic Surgeon Toshiyuki Saiga Explains!
Under the philosophy of 'Science & Art,' our cosmetic surgeons always prioritize what is best for the patient in their practice. Drawing from experience as a cardiovascular surgeon, we apply advanced techniques grounded in deep anatomical understanding to aesthetic medicine. We also pursue artistic sensibility to enhance each individual's unique features. Renowned for calm, reassuring consultations, we specialize in liposuction, breast augmentation, double eyelid surgery, and anti-aging treatments. With scientific evidence and proven techniques, we guide patients toward realizing their ideals.


Hello! I am Toshiyuki Saiga, Director of Bianca Clinic's Ginza Branch.
Some people who think, "I want breast augmentation, but surgery is a bit scary..." might consider hyaluronic acid injections as a more accessible option.However, in reality, hyaluronic acid injections into the breasts are considered a high-risk procedure.
This article clearly explains why hyaluronic acid injections are considered unsuitable for breast augmentation, along with the reasons and precautions.
Reasons Why Hyaluronic Acid Injections Are Not Suitable for Breast Augmentation
Some people may be interested in hyaluronic acid breast augmentation as an easy way to enhance their bust size. However, it actually carries various risks.
First, we will explain the specific risks and limitations associated with using hyaluronic acid for breast augmentation.
Absorbed by the body, so the effect is temporary
Hyaluronic acid is a substance naturally present in the body. Therefore, even when injected into the breasts, it is absorbed by the body within several months to about a year and cannot maintain volume long-term.
Furthermore, enlarging the breasts requires a larger volume of hyaluronic acid compared to other areas, which also makes the cost more expensive.
There is a limit on the injection volume.
The maximum amount of hyaluronic acid that can be injected safely is approximately 100cc per breast. This corresponds to an increase of about two cup sizes.
For those seeking larger sizes, it may not be sufficient, and injecting more can lead to unnatural, hard breasts. When volume enhancement is the goal, hyaluronic acid is not suitable.
The finished texture is hard
For hyaluronic acid breast augmentation, it is common to use a firmer formulation to effectively lift the breasts and maintain volume for as long as possible.
As a result, the finished product may feel stiff, making it unsuitable for those seeking the natural softness unique to the bust.
may deform
Hyaluronic acid injected into the breasts may shift due to pressure from vigorous exercise or sleeping on one's stomach. As a result, even if the shape appears ideal immediately after surgery, there have been reported cases where it changes to an irregular shape over time.
Possibility of infection, lumps, calcification, etc.
Hyaluronic acid injections are a simple procedure involving only injections, but the skin on the breasts is thin. Injecting large amounts increases the risk of infection, lumps, and calcification. Once a lump forms, it is difficult to dissolve, and in the worst cases, surgical removal may be necessary.
Furthermore, not all injected hyaluronic acid is absorbed; when large amounts are injected, some may remain permanently as lumps.Ultrasound examinations may also reveal hyaluronic acid encapsulated within a capsule as a lump, and in such cases, removal using hyaluronidase is not straightforward.
It is essential to fully understand that there is a risk of encountering long-term problems.
Risks that may interfere with breast cancer screening
The breast is a complex structure composed of mammary glands, fat, muscle, and other tissues. If hyaluronic acid enters the mammary glands or surrounding tissues, it may make accurate diagnosis difficult during future breast cancer screenings or mammograms.
Injected hyaluronic acid may appear as a lump, potentially leading to misdiagnosis. Therefore, it is essential to inform your doctor of any previous injections when undergoing medical examinations.
Some countries prohibit hyaluronic acid breast augmentation.
In fact, countries such as the United States and France have restricted or banned the practice of injecting hyaluronic acid into the breasts.
This is because it has been pointed out that it may interfere with breast cancer screening and poses health risks such as chronic inflammation, foreign body granuloma, and skin ulcers.
If you're choosing breast augmentation surgery with safety in mind, consider silicone implants or fat transfer.
At Bianca Clinic, we provide breast augmentation tailored to each patient's preferences and body type to safely and reliably achieve your desired results.
The main breast augmentation procedures offered at our clinic are as follows.
- Preserve (silicone bag breast augmentation)This breast augmentation procedure aims for natural volume enhancement while minimizing physical strain. By preserving breast tissue—including muscles, nerves, blood vessels, and lymphatic vessels—it is a minimally invasive technique that allows for quick recovery and smooth return to daily life. It is a popular choice for those seeking a natural look.
- Silicon bag breast augmentationThis method involves inserting silicone implants into the breasts. Since size and shape can be freely selected, it facilitates designing your ideal bust line and offers the expectation of long-term stable results. Its defining feature is achieving your desired volume while maintaining a natural feel.
- Condense Rich Fat Injection Breast AugmentationThis method involves harvesting and concentrating your own fat for injection into the breasts. Since your own fat is used, concerns about allergies or rejection are minimal, and it creates a soft, natural-feeling bust. While some fat may be absorbed, injection based on the preoperative design allows for achieving a natural and beautiful contour.
- Hybrid Breast AugmentationBy combining silicone implants with fat grafting, we can achieve both volume and natural softness. Using silicone implants to establish the desired size, while covering the implant edges with fat grafting, allows for a more natural and smooth breast contour.
We will recommend the treatment most suitable for your needs and condition based on these methods.
▷For more details about the breast augmentation surgery performed at Bianca,Here
It is important to choose breast augmentation treatment with a long-term perspective.
Hyaluronic acid injections may seem like a convenient option, but for areas requiring significant volume, such as the breasts, the risks are relatively high. Choosing them lightly could lead to regret.
Once breast surgery is performed, it affects lifestyle choices, breastfeeding, and changes due to aging. That's precisely why choosing a surgical method with a long-term perspective is crucial.
At Bianca Clinic, we offer breast augmentation tailored to each patient's body type, lifestyle, and desires. We provide comprehensive support to help you achieve your ideal bust with peace of mind, considering both the immediate post-operative recovery and future changes.
▶Details and Reservations for Bianca Clinic's "Breast Augmentation Surgery"Here!
Dr. Toshiyuki Saiga Profile
https://biancaclinic.jp/doctor/saiga/
After a career as a cardiovascular surgeon, he transitioned to cosmetic surgery. Building on the solid technical skills honed through delicate and highly challenging vascular procedures, he provides precise cosmetic treatments with a strong focus on safety. Since joining Bianca, he has pursued procedures that shape each patient's ideal appearance, including breast augmentation, liposuction, and facial contouring (injection treatments).
Certified by the Japan Society of Aesthetic Surgery (JSAS) as a Board-Certified Aesthetic Surgeon, a member of the Japanese Society of Anti-Aging Medicine, and a VASER Lipo Certified Physician, I prioritize achieving both medically sound treatments and natural beauty. In 2025, I assumed the role of Director at BIANCA CLINIC Ginza, performing numerous procedures that address patients” concerns and aspirations while adhering to the principle of ”what is best for the patient."
<Dr. Toshiyuki Saiga's Medical Services>
◆Liposuction
◆Breast Augmentation in General
◆Facial Slimming Treatment
◆All types of eye area surgery (double eyelid surgery, Hamra method, brow lift, etc.)
◆Injection Therapy in General
◆General Skin Treatment
<Professional Affiliations and Qualifications>
◆Board-Certified Plastic Surgeon by the Japanese Society of Aesthetic Surgery (JSAS)
◆Japanese Society of Anti-Aging Medicine
◆VASER Lipo Certified Physician
<Check here for more information about Professor Toshiyuki Saiga>
Dr. Toshiyuki Saiga's Instagram account (@saiga_toshiyuki_) isHere
The official Instagram account for Bianca Clinic (@biancaclinic) isHere