BNLS Fat-Dissolving Injections in Tokyo: Results, Sessions and Cost
If you have noticed stubborn pockets of fat around your face or chin that remain despite a healthy lifestyle, you are not alone — and you are certainly not without options. BNLS is one of the most popular non-surgical fat-dissolving treatments in Japan, and it has attracted growing interest from international residents and medical tourists in Tokyo. This article explains clearly what BNLS is, what results are realistic, how many sessions you may need, and what the treatment costs in Tokyo.
What you’ll learn in this article:
- What BNLS is and how fat-dissolving injections work
- How many sessions are typically needed and what results to expect
- Typical BNLS cost in Tokyo clinics
- Who is — and who is not — a suitable candidate
- Common misconceptions about fat-dissolving treatments
Have a question about this treatment?
Message us on LINE or WhatsApp — our English-speaking team usually replies the same day.
What Is BNLS?
BNLS (an acronym derived from the formulation’s herbal and botanical active ingredients) is an injectable fat-dissolving solution developed in South Korea. It is classified as a lipolytic injection — meaning it is designed to break down localised fat cells when administered directly into targeted tissue.
Unlike many deoxycholic-acid-based injectables used in Western markets, BNLS relies primarily on plant-derived compounds including natural extracts such as artichoke, L-carnitine, and phosphatidylcholine-adjacent botanicals, which are intended to disrupt fat cell membranes and promote lymphatic clearance of the released contents.
BNLS and its evolved formulation BNLS Neo are widely available in Japanese aesthetic clinics. BNLS Neo contains a higher concentration of active ingredients and is typically preferred for patients seeking more pronounced results from fewer sessions.
How Fat-Dissolving Injections Work
When injected into subcutaneous fat tissue, the active compounds in BNLS are thought to destabilise the cell membranes of adipocytes (fat cells), causing them to release their lipid contents. The broken-down fat is then gradually processed and cleared from the body through the lymphatic system and liver over several weeks. Because fat cells in adults do not regenerate in the same location once destroyed, the results can be long-lasting — provided the patient maintains a stable weight after treatment.
The injection itself is relatively superficial and does not involve surgery, anaesthesia, or any incisions. Sessions are typically completed within 15 to 30 minutes, depending on the number of areas treated. Multiple passes of small-volume injections are made across the target zone using a fine needle.
Areas Commonly Treated with BNLS
BNLS is primarily indicated for facial and small-body fat deposits rather than larger body contouring. The most frequently treated areas in Japanese clinics include:
- Under-chin / submental area (double chin)
- Jowl area and lower cheeks
- Nasolabial fat pads (alongside the nose and mouth)
- Buccal fat area (mid-cheek fullness)
- Under-eye / tear trough fat pads (with caution; specialist assessment required)
- Upper arm fat deposits (depending on the formulation and clinic protocol)
For larger body areas — such as the abdomen, thighs, or flanks — liposuction remains the more effective and reliable option. BNLS is not intended as a treatment for generalised weight loss.
Expected Results and Number of Sessions
BNLS does not produce instant results. The lipolytic process continues over two to four weeks following each session as the body gradually clears the treated fat. Most patients begin to notice a visible change after the second or third session, with the full effect of any single session becoming apparent at approximately four weeks.
Clinical reports from Korean and Japanese aesthetic literature indicate that most patients require between three and six sessions to achieve a satisfactory outcome, with sessions spaced roughly two to four weeks apart. The number of sessions needed varies depending on the volume of fat present, the individual’s metabolism, and the target area. Thinner patients with a small, localised deposit may respond well within three sessions; patients with more substantial submental fat accumulation may require five or six.
Studies suggest that lipolytic injectables can produce measurable reductions in subcutaneous fat layer thickness, with one published assessment reporting a mean reduction of approximately 20–30% in treated fat volume over a course of treatment — though individual variation is significant, and results are not guaranteed.
Dr. Karibe’s Note
A common question I receive from international patients is whether a single BNLS session will be enough to see a noticeable change. In most cases, a single session produces subtle tightening and mild reduction that is more easily felt than seen.
I generally advise patients to commit to a minimum of three sessions before evaluating the outcome — and to photograph their progress regularly under consistent lighting so that the gradual change is easier to appreciate. Patience is genuinely essential with any non-surgical fat-dissolving treatment.
BNLS Cost in Tokyo
The cost of BNLS injections in Tokyo varies according to the area being treated, the volume of solution used per session, and whether BNLS or the more concentrated BNLS Neo formulation is selected. Fat-dissolving injections are a cosmetic procedure and are therefore not covered by Japan’s national health insurance system.
At BIOTOPE CLINIC in Shirokanedai, fat-dissolving injections are offered as part of the cosmetic injectable menu. As pricing varies by treatment area and volume, patients are encouraged to request a detailed breakdown during their initial consultation. A standard initial consultation is priced at ¥3,300, and a surgical consultation with Dr. Karibe is ¥2,200.
As a general reference for Tokyo’s aesthetic clinic market, single-session BNLS pricing typically falls in the following ranges:
| Treatment Area | Typical Tokyo Price Range (per session) | Estimated Sessions |
|---|---|---|
| Submental (double chin) | ¥15,000 – ¥40,000 | 3 – 5 |
| Cheeks / jowls | ¥20,000 – ¥50,000 | 3 – 6 |
| Nasolabial fat pads | ¥10,000 – ¥30,000 | 3 – 5 |
| Under-eye fat pads | ¥15,000 – ¥35,000 | 3 – 4 (specialist assessment required) |
Note: these ranges reflect general Tokyo market pricing and are provided for reference only. For an accurate quote tailored to your anatomy and goals, we recommend booking a consultation with Dr. Karibe at BIOTOPE CLINIC.
Have a question about this treatment?
Message us on LINE or WhatsApp — our English-speaking team usually replies the same day.
What to Expect: Before, During and After Treatment
Before Your Session
A thorough consultation is essential before any fat-dissolving injection. The clinician will assess the target area, discuss your aesthetic goals, review your medical history, and confirm there are no contraindications (see candidacy section below). Photographs are typically taken as a baseline. Patients are usually advised to avoid alcohol for 24 hours before treatment and to inform their doctor of any medications or supplements — particularly blood thinners such as aspirin or omega-3 supplements — that could increase bruising risk.
During the Procedure
A topical numbing cream is applied to the treatment area approximately 20 to 30 minutes before the injections begin. The practitioner then delivers multiple small injections across the treatment zone using a very fine needle. Most patients describe the sensation as a series of brief stinging or pinching feelings. The procedure itself is usually completed within 15 to 30 minutes.
After Treatment and Downtime
Swelling is the most predictable and common side effect after BNLS injections, particularly in the first 24 to 72 hours. The swelling may look more pronounced than the patient expects — this is a normal inflammatory response associated with the lipolytic process, not a sign of complication. Redness, tenderness, and mild bruising at the injection sites are also common and typically resolve within one to two weeks. Most patients are able to return to desk-based work the same day or the following day, though visible swelling may persist for several days.
Cold compresses during the first 24 hours, avoidance of heat (saunas, hot baths, vigorous exercise) for 48 hours, and avoidance of alcohol and blood-thinning medications for 48 hours post-treatment are standard aftercare recommendations.
Who Is a Good Candidate?
BNLS is suitable for adults who:
- Have localised pockets of stubborn facial or small-area fat that have not responded to diet and exercise
- Prefer a non-surgical approach to facial contouring
- Maintain a broadly stable weight and are not seeking general weight-loss treatment
- Have realistic expectations regarding the pace and degree of results
- Are in good general health with no active skin infection in the target area
BNLS is generally not recommended for:
- Pregnant or breastfeeding women
- Patients with active infection, inflammation, or skin condition in the treatment area
- Patients with autoimmune conditions or significant clotting disorders (without medical clearance)
- Patients with known allergy to any component of the BNLS formulation
- Patients with very little subcutaneous fat in the target area (treatment may be ineffective or increase risk of irregularity)
At BIOTOPE CLINIC in Shirokanedai, Dr. Karibe frequently sees patients who initially enquire about BNLS but, following examination, are better served by a different treatment — for example, HIFU for skin laxity rather than fat reduction, or a surgical approach such as transconjunctival blepharoplasty for under-eye concerns involving both fat prolapse and skin redundancy. A proper consultation is always the starting point.
Common Misconceptions About BNLS
Misconception 1: BNLS results appear immediately after one session.
In reality, the treated fat is metabolised gradually. Swelling immediately post-injection can temporarily make the area appear larger, and the actual fat-reduction effect becomes visible over the following two to four weeks. Patients who judge the outcome at day three are almost invariably assessing swelling rather than results.
Misconception 2: BNLS is a weight-loss treatment.
BNLS is a contouring treatment for localised fat. It is not indicated for, nor effective as, a method of reducing overall body weight. Patients with diffuse, generalised fat excess in larger body areas are unlikely to achieve satisfactory results from BNLS alone, and a consultation is the appropriate step to identify the right approach.
How BNLS Compares to Other Fat-Reduction Options
Several non-surgical and surgical options exist for fat reduction in Tokyo clinics. The table below provides a simplified comparison to help readers understand where BNLS sits in the broader treatment landscape.
| Treatment | Mechanism | Best For | Downtime | Sessions Needed |
|---|---|---|---|---|
| BNLS / BNLS Neo | Botanical lipolysis (injection) | Small facial fat deposits | Low (1–3 days swelling) | 3 – 6 |
| HIFU (e.g. Ultherapy-type) | Focused ultrasound — skin tightening | Skin laxity, mild lifting | Minimal | 1 – 2 per year |
| Buccal Fat Removal (surgical) | Excision of buccal fat pad | Permanent mid-cheek slimming | Moderate (1 – 2 weeks) | 1 (permanent) |
| Liposuction (cheek/jawline) | Surgical aspiration of fat | Larger or more defined fat reduction | 1 – 2 weeks | 1 (permanent) |
HIFU treatments for skin tightening and lifting are available at BIOTOPE CLINIC in Shirokanedai — this is a useful complement to fat-dissolving injections when skin laxity is also a concern. Feel free to ask about combination approaches during a consultation with Dr. Karibe.
Where to Get BNLS Fat-Dissolving Treatment in Tokyo
Within our clinic group, English-speaking consultations are handled at BIOTOPE CLINIC in Shirokanedai (Minato-ku, Tokyo) by Dr. Jun Karibe. Our sister clinic, Kojimachi Dermatology & Plastic Surgery Clinic in Ichigaya (Chiyoda-ku), is the group’s main office and handles Japanese-language insurance-covered dermatology. All English-speaking patients interested in BNLS, facial contouring, or any cosmetic consultation should direct their enquiries to BIOTOPE CLINIC. Bookings and enquiries in English: LINE or WhatsApp.
Frequently Asked Questions
- Q. Is BNLS painful?
- Most patients describe the sensation as mild to moderate discomfort — a series of brief stinging or pinching feelings as each injection is delivered. A topical anaesthetic cream is applied before the procedure to reduce discomfort. The majority of patients find the procedure tolerable without additional pain management.
- Q. How long do BNLS results last?
- Because BNLS works by disrupting fat cells rather than simply shrinking them, the results can be long-lasting if body weight remains stable. However, significant weight gain after treatment can cause surrounding fat cells to enlarge, diminishing the visible effect. Maintenance sessions may be appropriate over time depending on individual circumstances.
- Q. Can BNLS be combined with other treatments?
- Yes — BNLS is frequently combined with other aesthetic treatments. Common combinations include HIFU for skin tightening in the same area, or Botox for jawline muscle slimming (masseter reduction) alongside BNLS for submental fat. A clinician will advise whether combination treatment is appropriate at your consultation.
- Q. How is BNLS Neo different from standard BNLS?
- BNLS Neo is a more concentrated formulation of the original BNLS solution, designed to deliver stronger lipolytic activity per injection. Many clinics in Japan now use BNLS Neo as the standard option. Your clinician will recommend the appropriate formulation based on the treatment area and the volume of fat being targeted.
- Q. Is BNLS safe for international patients visiting Tokyo?
- BNLS is widely administered in Japanese aesthetic clinics and is considered safe when performed by a qualified medical practitioner. International visitors should plan their sessions with sufficient time in Tokyo to allow for post-treatment swelling to resolve and should inform their treating clinician of any medications or health conditions. A consultation before booking a course is strongly recommended.
Have a question about this treatment?
Message us on LINE or WhatsApp — our English-speaking team usually replies the same day.
Summary
BNLS and BNLS Neo are non-surgical, injection-based fat-dissolving treatments particularly well suited to small, localised facial fat deposits — including the double chin, cheeks, and jowls. Results develop gradually over several weeks and across multiple sessions, with most patients requiring three to six treatments to achieve a meaningful outcome. Downtime is low, though temporary swelling is to be expected in the days following each session.
BNLS is not a weight-loss solution, and realistic expectations are essential. For those with concerns about skin laxity rather than (or in addition to) fat volume, complementary treatments such as HIFU may offer additional benefit. For patients seeking a more permanent and substantial reduction, surgical options such as liposuction or buccal fat removal at BIOTOPE CLINIC may be worth discussing.
If you have questions about BNLS fat-dissolving injections, English-speaking consultations are handled at BIOTOPE CLINIC in Shirokanedai (Minato-ku, Tokyo) by Dr. Karibe. Our sister clinic Kojimachi Dermatology & Plastic Surgery Clinic in Ichigaya (Chiyoda-ku) handles Japanese-language insurance dermatology. English enquiries: LINE or WhatsApp.
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References
- Kim B-J, Sung J-Y, Kim M-N. Efficacy and safety of phosphatidylcholine-based injectable lipolysis solution for facial fat reduction: a prospective cohort study. Journal of Dermatological Treatment. 2021.
- Rotunda AM, Kolodney MS. Mesotherapy and phosphatidylcholine injections: historical clarification and review. Dermatologic Surgery. 2006.
- Salti G, Ghersetich I, Tantussi F, Bovani B, Lotti T. Phosphatidylcholine and sodium deoxycholate in the treatment of localised fat: a double-blind, randomised study. Dermatologic Surgery. 2008.
- Hexsel D, Brum C, Siega C, et al. Evaluation of self-esteem and depression symptoms in patients undergoing treatment for localized fat with deoxycholic acid vs. placebo. Journal of the European Academy of Dermatology and Venereology. 2019.
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- Body Contouring Treatment Tokyo Clinic Guide
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- English Speaking Plastic Surgeon Tokyo: Complete Guide
- English-Speaking Dermatologist Tokyo: Fees & Costs
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