Lately, I've grown increasingly concerned about the changes that come with age. I felt I'd reached the limits of self-care when it came to sagging around my mouth, hollow cheeks, nasolabial folds, sunken temples, and the wrinkles and hollows under my eyes. I found Smart Skin Clinic through an online search,and it had extremely high reviews,so I decided to come here. I chose Profhilo because I wanted minimal downtime, safety, and rejuvenation of my whole face. Treatment began right after the consultation, with injections at five points on each side of my face, ten in total. The moment of the needle is just a slight prick, but the discomfort builds as the solution goes in. Still, it's not painful enough to require anesthesia. After the procedure, the injection sites swell a little like mosquito bites, but it's mild enough to hide with a mask and doesn't interfere with heading home. In my case, one spot under my eye bruised, and I'm still covering it with a mask for work. I expect the bruise to fade in about 10 days. On day 1 after the procedure, my cheeks felt fuller. It's now day 5, andthe results far exceed what I imagined,and I couldn't be happier.
One of the Lowest Prices in Japan: XERF (Zarf) 100 Shots for 16,633 yen | [Official] Smart Skin Clinic Group, Tokyo and Yokohama
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| Sessions | area | Regular Price | Special Price |
|---|---|---|---|
| 200 shots | cheeks only | 49,800 yen | 44,800 yen (22,400 yen per 100 shots) |
| 300 shots | Full face + under chin + neck | 59,800 yen | 54,800 yen (18,266 yen per 100 shots) |
| 400 shots | full face + under the chin | 74,800 yen | 69,800 yen (17,450 yen per 100 shots) |
| 600 shots | full face + under the chin + neck | 104,800 yen | 99,800 yen (16,633 yen per 100 shots) |
Special Prices Available Only at the Hatchobori and Yokohama LocationsAn additional 20%OFF off the discounted price
| Sessions | area | Through September 30 Special Prices Available Only at the Hatchobori and Yokohama Locations |
|---|---|---|
| 200 shots | cheeks only | 44,800 yen ¥35,840(17,920 yen per 100 shots) |
| 300 shots | Cheeks + Under the Chin or Full Face | 54,800 yen 43,840 yen(14,613 yen per 100 shots) |
| 400 shots | full face + under the chin | 69,800 yen 55,840 yen(13,960 yen per 100 shots) |
| 600 shots | full face + under the chin + neck | 99,800 yen ¥79,840(13,306 yen per 100 shots) |
*All prices include tax.
*We offer self-pay (non-insured) treatments only; insurance does not apply.
*Limited to treatments at the Hatchobori and Yokohama locations (This offer is valid only at the location where you signed your contract.)
Over 24,000 cases treated annually, more than 600 Google 5-star reviews, and a satisfaction rate of 92.6%. Board-certified anti-aging specialists handle everything from consultation to treatment.
Reasons to Choose Our Clinic for XERF (XERF) Treatment
- One of the lowest prices in the country. 600 shots (entire face + under the chin + neck) for 99,800 yen = 16,633 yen per 100 shots
- The total price includes the consultation fee and the cost of the needles. There are no additional charges on the day of your visit.
- This procedure does not require anesthesia. It is performed by a board-certified specialist from the Anti-Aging Society.
Google Reviews 4.5/5.0

Hot Pepper Beauty 4.57/5.00

KireiPass rating4.30/5.00

Kumapon rating4.71/5.00

Gangnam Unni rating9.3/10.0

Kota Ishii
Chairman, Smart Skin Clinic
What Is XERF?
XERF is a monopolar RF (radiofrequency) therapy device developed by the South Korean company LUTRONIC.
It received certification in 2024 from Korea's MFDS (Ministry of Food and Drug Safety), the Korean equivalent of Japan's Ministry of Health, Labour and Welfare.
The most distinctive feature of Zarf is its ability to deliver thermal energy “three-dimensionally” from the dermis to the subcutaneous fat layer.
As a result, it is expected to simultaneously address multiple skin concerns—such as a double chin, sagging jawline, nasolabial folds, and marionette lines—while improving skin firmness, radiance, and pore tightening.
①Monopolar RF and the Mechanism Behind Sagging Improvement
Radiofrequency (RF) generates heat by causing water molecules in the skin tissue to vibrate.
The mechanism by which this heat improves sagging is as follows:
- Immediate effect: Heat causes collagen fibers to contract, so you can feel a firming effect immediately after treatment. This relies on the same principle by which heat denatures protein — much like meat shrinking when grilled.
- Long-term effect: As part of the wound-healing response triggered by thermal stimulation, fibroblasts are activated and new collagen and elastin are produced. This effect peaks over the 1 to 3 months following treatment, leading to lasting improvements in skin firmness and elasticity.
RF treatments are also categorized as "monopolar," "bipolar," or "multipolar" depending on the number of electrodes used, and XERF employs monopolar RF.
Monopolar RF is a method that passes high-frequency current between an “electrode applied to the treatment area” and an “electrode attached to the body (counter electrode),” forming a closed circuit within the body to heat the target area. Because the energy reaches a wide area, it is suitable for mild to moderate sagging.
[Types and Characteristics of RF]
| RF type | Monopolar RF | Bipolar RF | Multipolar RF | Microneedle RF |
| Frequency | 6.78MHz / 2MHz | 1 MHz | 1 MHz | 2 MHz |
| Benefits | Heat penetrates broadly and deeply | Treatment depth can be specified | Energy concentrates centrally | Treatment depth can be specified |
| Drawbacks | Treatment depth cannot be specified | Treatment depth is shallow | Treatment depth cannot be specified | Downtime occurs due to skin puncture |
| Effect | Tightening · Promoting Skin Regeneration | Contour correction | Contour correction | Promotes skin regeneration |
3. Three Irradiation Modes and the "Three-Layer" Concept
The third feature of Zarf is that it offers three different irradiation modes depending on the depth of the skin.
This enables "customized irradiation" tailored to each individual's skeletal structure, fat distribution, and type of sagging.

| Mode | Deep | Middle | Shallow |
| Frequency | 6.78MHz + 2MHz (dual frequency) | 6.78MHz | 6.78MHz |
| Target | Deep fat layer | Deep dermis to superficial fat layer | Superficial dermis |
| Effect | Fat Cell Volume Reduction Lifting Effect from Deep Within | Promotes the regeneration of collagen and elastin in the dermis for a natural lifting effect | Immediate improvement in skin quality |
| Indications | Double chin Severe sagging along the jawline Loose skin around the mouth | Nasolabial folds Marionette lines Gorgo lines Mild to moderate sagging | Fine lines Lack of firmness and radiance Enlarged pores Facial redness |
How XERF Differs From HIFU and Other RF Treatments
Many people wonder, "Should I choose XERF or HIFU?" or "How is it different from Volnewmer or Thermage?"
Here, we take a closer look at how XERF compares with other major sagging treatments.

| Device | XERF | HIFU | Thermage | Volnewmer | Potenza |
| Energy / type | Monopolar RF (6.78MHz + 2MHz) | Ultrasound | Monopolar RF (6.78MHz) | Monopolar RF (6.78MHz) | Needle RF |
| Target | Dermis to Subcutaneous Fat ( surface heating) | SMAS layer (point heating) | Dermis to subcutaneous tissue | Dermis to superficial fat layer | Dermis |
| Main effects | Toning Fat Reduction Skin Texture Improvement | Lift-Up Firming | Tightening | Firming Skin Elasticity | Acne scars, pores, and skin quality improvement Improvement of sagging and fine lines |
| Pain | Minimal | Pain that resonates in the bone | Strong | Minimal | Pain as if being pricked by needles repeatedly A tingling sensation like an electric shock |
| Downtime | Almost none | A few days ・Redness ・Swelling ・Pain similar to muscle soreness | Almost none | Almost none | A few days to about a week ・Redness ・Swelling ・Bruising |
Three Expected Synergistic Effects
Combining XERF with a skin booster is not simply additive — it multiplies "heat-based tightening" with "formulation-based skin regeneration support."

Risks and Side Effects
- Redness, swelling, pain, and edema at the needle insertion site
- Bruising
- Temporary raised bumps
- Results and downtime may vary from person to person.
Those who are not eligible for the treatment
- Women who are pregnant or breastfeeding
- People with impaired immune function or those undergoing immunosuppressive therapy
- People who are prone to keloids, hypertrophic scars, or pigmentary disorders
- People with a tendency to bleed or those taking anticoagulants or similar medications
- People with sunburn, eczema, dermatitis, or severe inflammation at the injection site
Pricing
| Sessions | area | Regular Price | Special Price |
|---|---|---|---|
| 200 shots | cheeks only | 49,800 yen | 44,800 yen (22,400 yen per 100 shots) |
| 300 shots | Full face + under chin + neck | 59,800 yen | 54,800 yen (18,266 yen per 100 shots) |
| 400 shots | full face + under the chin | 74,800 yen | 69,800 yen (17,450 yen per 100 shots) |
| 600 shots | full face + under the chin + neck | 104,800 yen | 99,800 yen (16,633 yen per 100 shots) |
Special Prices Available Only at the Hatchobori and Yokohama LocationsAn additional 20%OFF off the discounted price
| Sessions | area | Through September 30 Special Prices Available Only at the Hatchobori and Yokohama Locations |
|---|---|---|
| 200 shots | cheeks only | 44,800 yen ¥35,840(17,920 yen per 100 shots) |
| 300 shots | Cheeks + Under the Chin or Full Face | 54,800 yen 43,840 yen(14,613 yen per 100 shots) |
| 400 shots | full face + under the chin | 69,800 yen 55,840 yen(13,960 yen per 100 shots) |
| 600 shots | full face + under the chin + neck | 99,800 yen ¥79,840(13,306 yen per 100 shots) |
*All prices include tax.
*We offer self-pay (non-insured) treatments only; insurance does not apply.
*Limited to treatments at the Hatchobori and Yokohama locations (This offer is valid only at the location where you signed your contract.)
- This limited-time special price may end without notice. Now is your chance to receive it at the lowest price level in Japan.
- Treatments are performed by a board-certified anti-aging specialist with a track record of over 24,000 skin rejuvenation injections.
- A free consultation with a physician (normally valued at 10,000 yen)
- Minimal downtime, with natural improvements and changes that others won't notice
- Trusted with a 90%-plus satisfaction rating across various reviews and ratings
At our clinic, consultations are conducted directly by a physician, not a beauty counselor. There is no hard selling whatsoever, so please feel free to consult with us.
Legal Notices
The treatments described on this page involve the use of drugs or medical devices that have not been approved in Japan. The drugs and devices used for treatment have been imported through personal import procedures based on the judgment of our clinic’s physicians. Please refer to the Ministry of Health, Labor and Welfare’s website for information on drugs and other items requiring caution when imported through personal import.
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