Dr. Takahiro Miki
Profile
After graduating from Kawasaki Medical University, he practiced orthopedic surgery at university hospitals and general hospitals, gaining experience in a wide range of fields, including trauma, sports injuries, regenerative medicine, and ultrasound-guided treatments. He continued to hone his skills as a board-certified orthopedic surgeon recognized by the Japanese Orthopaedic Association and joined YAYOI CLINIC in 2025. Specializing in skin-rejuvenation injections, Botox, and ultrasound-guided fascial release, he provides aesthetic medical treatments tailored to each individual’s needs, addressing both beauty and health.
For those considering acne scar treatment at a cosmetic dermatology clinic in Naka Ward, Hiroshima City: Persistent acne and the scars it leaves behind are serious concerns for many people. Since acne scars are difficult to treat with daily skincare alone, seeking care at a clinic with specialized knowledge and techniques is a viable option.
In this article, YAYOI CLINIC, a cosmetic dermatology clinic in Naka Ward, Hiroshima City, explains its approach to treating acne scars. We hope you find this information helpful.
What You Need to Know First! Types of Acne Scars and the Basics of Treatment
In the following section, we’ll explain the main types of acne scars and their characteristics.
■ Acne scars that look like red or brown spots
The redness and brown spots that remain after acne has cleared up are typical acne scars, andKnown as post-inflammatory erythema or post-inflammatory hyperpigmentationThat's how it is.
Red marks are believed to be caused by damaged capillaries that dilate or proliferate, making them visible through the skin’s surface. If the symptoms are mild, they will improve within a few months to about a year. However, if there is no change even after several months, seeking treatment from a dermatologist is one option.
Brown spots are believed to occur when melanin—which is produced to protect the skin—remains in the skin because it is not shed due to a disruption in the skin's natural renewal cycle.If left untreated, it will require more time to treat, so consider seeking professional help early on.That's one way to go about it.
■Acne scars that leave craters or uneven skin texture
When inflammation spreads to the dermis or subcutaneous tissue, the tissue becomes damaged. Since the skin is unable to restore its original structure, it triggers an abnormal repair response, andCraters are caused by adhesions that pull the skin downward into the deeper layers.It is.
There are primarily three types of craters:
Main Types of Craters
| type | feature |
| ice pick mold | This type features a narrow, deep indentation that looks as if it were made by a needle, with a diameter of 2 mm or less. |
| rolling type | It is about 5 mm in diameter and has a gently concave shape. |
| boxcar model | This type features a box-like shape with a flat bottom and vertical, steeply cut edges. |
These areDue to damage to the dermis and adhesions, it is difficult to treat this on your own.. Professional medical intervention is recommended.
■ Nodules and Keloid-Like Acne Scars
When inflammation reaches the dermis, collagen is produced in excess as part of the healing process, accumulating irregularly and causing the skin to bulge. This results in lumps or keloid-like acne scars. These may feel hard to the touch or appear red and swollen. Such symptoms includeBecause constitutional factors also play a role, it is difficult to manage this on your own.That's right. Be sure to seek a proper diagnosis from a medical professional as soon as possible.
3 Acne Scar Treatment Options Available at Cosmetic Dermatology Clinics in Naka Ward, Hiroshima City
Treatment for acne scars varies depending on the symptoms and may include methods such as laser therapy and subcision. Here, we’ll explain Tri-Fill Pro, subcision, and Potenza—some of the most common acne scar treatments available at cosmetic dermatology clinics in Naka Ward, Hiroshima City.
■TRI-FIL-PRO
Tri-Fil Pro uses a fine needle to inject carbon dioxide and medication,Accessing scar tissue that has hardened beneath the skinThis is a treatment method. By addressing adhesions in the subcutaneous connective tissue, it plumps up and lifts sunken skin, supporting the skin’s natural functions. As the tissue is separated,Collagen production in the skin is promoted, which is expected to improve skin firmness and smoothness.Yes, it is possible. A key feature of this procedure is that it allows for the injection of substances such as polynucleotides at the same time as the treatment.
| (data) item | Contents |
| Cost per session | Subcision Shot (Full Face, Including Medication)
Treatment by a Physician: 121,000 yen (tax included) Nursing Treatment: 88,000 yen (tax included) |
| Recommended Number of Treatments | Once a month (1 course: about 3 times)
*The number of treatment sessions varies from person to person. |
| down time | Redness and bruising may last for a few hours to about one day; swelling may last for about 2 to 3 days; and bruises may appear as purple spots or turn yellow and may last for about 1 to 2 weeks. |
| risk | Swelling, redness, discomfort, needle marks, infection, pigmentation, scarring, allergies, heat, unpleasant sensations, etc. |
■ Subsession
Subcision is performed using medical needles,Physically sever the tough fibrous tissue located beneath the skinThis is a treatment method. It is primarily used for acne scars known as “rolling scars,” which are wide, undulating, and crater-like.
By cutting the fibrous bands that pull on the skin from beneath the skin,It is expected to help restore the skin's natural plumpness and smooth out unevenness.Can be done.
| (data) item | Contents |
| Cost per session | With Injection (Jubelook): 1 area, 2 cm × 2 cm – 11,000 yen (tax included)
No injections: 22,000 yen (tax included) |
| Approximate number of treatments | Once a month (1 course: 3-6 times)
*The interval between treatments varies depending on the amount of bleeding. |
| down time | Purple or yellow bruising may remain for about 2 to 3 weeks. You may apply foundation 6 hours after treatment. |
| risk | In people prone to keloids, the skin may occasionally thicken. |
■Potenza
Potenza is a treatment device that combines ultra-fine needles with RF (radiofrequency).By delivering RF energy directly from the needle tip to the dermis, this treatment supports the skin’s natural functions and promotes collagen production.。
This treatment is designed to address acne scars and enlarged pores, helping you achieve smoother skin. Thanks to its drug delivery system, it is expected to allow active ingredients such as Macoom to penetrate deeply and evenly into the skin.
| (data) item | Contents |
| Cost per session | 49,800 yen (tax included) |
| Recommended Number of Treatments | 3 times every 4-6 weeks ~ (every 2 weeks for melasma)
*The number of treatment sessions varies depending on the type of treatment. |
| down time | Redness, needle marks, and bruising lasting from a few hours to about a week |
| risk | Infection, hyperpigmentation, folliculitis, erythema, temporary onset or worsening of acne, bleeding, swelling, redness |
Yayoi Clinic, a cosmetic dermatology practice in Naka Ward, Hiroshima City, answers questions about acne scar treatment
In the following section, Yayoi Clinic, a cosmetic dermatology practice in Naka Ward, Hiroshima City, will address frequently asked questions about acne scar treatment.
■ Where are the best cosmetic dermatology clinics in Hiroshima City? How can I find a dermatology clinic that’s right for me?
Have you been searching for terms like “Recommended Dermatology Clinics in Hiroshima,” “Top Dermatologists in Hiroshima City,” or “Highly Rated Dermatologists in Hiroshima”? When choosing a dermatology clinic that’s right for you, consider factors such as convenience andThe key is to make sure the counseling is thorough.It is.
Since acne scar treatment often requires multiple visits, it’s important to choose a clinic that’s easy to get to—considering factors like proximity to the station and reception hours—so you can attend appointments without any hassle. Additionally, choosing a clinic that listens to your concerns and preferences in advance and offers recommendations tailored to your skin condition will help ensure you feel confident about the treatment.
■Are there any clinics in Hiroshima that offer acne treatment and acne scar care, and that are popular with men?
Are you looking for a clinic in Hiroshima that specializes in acne scar treatment and is recommended for men? Men’s skin produces more sebum and is subject to irritation from shaving, so it requires care tailored to men’s unique skin concerns.
Recently, the number of male patients visiting cosmetic dermatology clinics in Hiroshima City has been increasing, and many clinics are making a conscious effort to create a calm and welcoming environment that makes men feel comfortable visiting. At Yayoi Clinic, we also offer consultations tailored to men’s skin concerns, and we welcome patients of all genders.
■Is acne scar treatment at a cosmetic dermatology clinic in Naka Ward, Hiroshima, covered by insurance?
Since the purpose of acne scar care is to improve the appearance of the skin, as a general rule,Not covered by public health insurance (private medical care)The first two are the following.
Treatment for acne accompanied by severe inflammation may be covered by insurance depending on the symptoms and treatment details; however, treatment for post-acne scars is considered an out-of-pocket service since it is intended to improve appearance. Additionally, while some of you may be looking for a clinic in Hiroshima that offers insurance-covered skin spot removal, most cosmetic procedures are typically out-of-pocket. While all treatments provided at Yayoi Clinic are fully out-of-pocket, we are happy to propose a plan tailored to your budget.
■ Conclusion.
We’ve explained the acne scar treatments available at cosmetic dermatology clinics in Naka Ward, Hiroshima City. There are various types of acne scars, and each requires an approach tailored to the specific condition.
If you have persistent skin concerns, it’s important not to keep them to yourself—consult a specialist. Start by scheduling a consultation at a cosmetic dermatology clinic and feel free to discuss your concerns. Take the first step toward healthy skin.
Aesthetic Dermatology, Aesthetic Medicine, Aesthetic Surgery, Art Make-up Yayoi Clinic (YAYOI CLINIC) in Hiroshima introduces treatments for different problems of the skin, body, and face.
In order to offer a better option for everyone, we will assess each person's skin condition and formulate a treatment plan that meets their needs in terms of treatment duration, budget, and acceptable downtime.
If you have any concerns, please come for a counseling session first.
■Related Articles Recommended for You
Description of treatment] Tri-Fill Pro
Approximate number of times of treatment] Once a month (1 course: about 3 times)
*The number of treatments varies from person to person.
Cost] ¥58,000 - ¥121,000 per session
Side effects/risks] Swelling, redness, discomfort, needle marks, infection, pigmentation, scar formation, allergies, heat, unpleasant sensations, etc.
Equipment used.
Trifill PRO treatments include procedures using domestically unapproved drugs or medical devices.
Drugs and medical devices used for treatment were imported from Japan under the judgment of our doctors.
There are no other domestically approved drugs with the same ingredients or performance.
Information on safety, etc. in other countries
Serious risks/side effects may not be evident.
About the Adverse Reactions Relief System for Drugs
In the unlikely event of serious side effects, the drug is not covered by the government's Adverse Drug Reactions Relief System.
[Description of treatment] Subsession
Approximate number of times of treatment] Once a month (1 course: 3-6 times)
*The interval between treatments depends on the degree of bleeding.
Cost] ¥11,000 - ¥22,000 per session
Adverse effects/risks
・ Individuals often experience internal bleeding.
In rare cases, the skin may thicken if the patient has a keloid constitution.
Equipment used.
Subsidy treatment includes procedures using domestically unapproved drugs or medical devices.
Drugs and medical devices used for treatment were imported through a private importation procedure based on the judgment of a physician at our clinic.
There are no other domestically approved drugs with the same ingredients or performance.
Information on safety, etc. in other countries
Serious risks, side effects, etc. may not have been identified.
About the Adverse Reactions Relief System for Drugs
In the unlikely event of serious side effects, the drug is not covered by the government's Adverse Drug Reactions Relief System.
[Description of treatment] Potenza
Approximate number of treatments: 3 times every 4 to 6 weeks (every 2 weeks for melasma)
*The number of treatments varies depending on the treatment.
[Cost] Per session: ¥49,800–¥299,000* (Varies depending on the number of sessions and treatment details.)
Approximate duration of treatment: 3 to 5 months
Adverse effects/risks
Infection, hyperpigmentation, folliculitis, erythema
After the procedure, the pores may become blocked due to inflammation or swelling, and temporary acne may develop or worsen.
Depending on the treatment, bleeding may occur.
Swelling and redness may occur after the procedure.
Please note that effects may vary from person to person. Also, depending on the area to be treated, some patients may not achieve outstanding results.
Equipment used.
Treatment of potenza includes procedures using domestically unapproved drugs or medical devices.
The medicines and medical devices used for treatment were imported from Jeisys Medical Inc. under the judgment of our doctors. Please refer to the following for information on drugs and medical devices that should be imported by individuals.
https://www.yakubutsu.mhlw.go.jp/individualimport/purchase/index.html
There are no other domestically approved drugs with the same ingredients or performance.
Information on safety, etc. in other countries
The following certifications have been obtained
-MFDS(2019.01)
About the Adverse Reactions Relief System for Drugs
In the unlikely event of serious side effects, the drug is not covered by the government's Adverse Drug Reactions Relief System.
