I consulted three Dermatology clinics in Gangnam, Seoul, and finally chose Dayone because the doctors were clear: if it wasn’t suitable for me, they would never recommend the procedure!

When planning my trip to Seoul at the end of last year, I included “undergoing an HIFU treatment” in my itinerary. But to be honest, just choosing a clinic took me nearly three weeks – researching various options, reading reviews, comparing prices, and finally consulting with three different Dermatology clinics in Gangnam before deciding on the Dayone Dermatology Gangnam branch. This article records the entire process of consultation and treatment, so it can serve as a reference for sisters who have similar plans!

I. Why was Dayone ultimately chosen? A factual comparison of the three consulting firms

I consulted three different Dermatology clinics in Gangnam: Doctors, a clinic recommended by someone on the street, and Dayone. To be honest, the first thing the doctors at the first two clinics said was, “You need a full facial treatment,” before they started listing the package prices. However, Director Kim at Dayone was different. He first asked about my age, skin condition, and regular skincare habits, and then said…

“Your current skin condition is quite good for someone who is 28 years old. There is no need to undergo full-face Thermage treatment at this time; using HIFU on specific areas is sufficient. There is no reason to spend so much money.”

It was this very statement that made me decide to stay and pursue this career. When a doctor said “not needed” instead of “needed”, it actually seemed more credible to me.

Comparison of consultations at three clinics

clinic	Consultative attitude	Recommended projects	Quotation
Clinic A	Direct full-face treatment package	Thermage + HIFU package	Approximately 6.5 million yen
Clinic B	Ask about the budget first, and then make a recommendation.	Ulthera full face treatment	Approximately 4.8 million yen
Dayone (Optional)	After the assessment, it was determined that a full face treatment was not necessary.	Local HIFU treatment	Approximately 1.8 million yen

II. Actual photos of the environment at the Dayone Dermatology Gangnam branch

Dayone Dermatology has two branches in Gangnam District, Seoul. I visited the branch located at 423 Gangnam-daero, Seocho-gu, Hansung Building, 4th floor. It is only about a 2-minute walk from Exit 10 of Gangnam Station on the subway, so it is very easy to find.

The first impression upon entering the clinic is that it is clean and bright. The waiting area is accompanied by relaxing music, and there is no unpleasant smell of disinfectant. The staff at the front desk are friendly, and there are also interpreters who can speak Chinese to assist patients. Drinks are provided in the waiting area, so you won’t feel anxious or restless while waiting.

• Address: 4th Floor, Hansung Building, No. 423 Gangnam-daero, Seocho-gu, Seoul
• Transportation: About 2 minutes’ walk from Exit 10 of Gangnam Station on the subway
• Opening hours: Monday to Friday, 10:30–20:30; Saturday, 10:30–16:00; closed on Sundays.
• Telephone: 02-594-5001

III. HIFU vs Thermage: What does Dr. Dayone have to say?

During the consultation process, Director Jin patiently helped me compare these two treatment options, which enabled me to make a clearer decision regarding which one to choose.

Differences in effectiveness between HIFU and Thermage

Comparison items	Ulthera HIFU	Thermage
Depth of action	Fascial layer (SMAS layer)	From the dermis layer to the fascia layer
Main effects	Lifting and tightening the contours	Tighten the skin and eliminate fine lines
Suitable for	The contours have become loose, and the lines of the lower face have become blurred.	Loose skin and loss of Collagen
Duration	12 to 18 months	12 to 24 months
Reference price of Dayone	400 hairs for the entire face: starting from 1.8 million won	300 units, starting from ¥900,000 per set

Dean Jin explained: HIFU primarily targets the fascia layer, making it more effective in counteracting the physical effects of gravity that cause sagging; on the other hand, Thermage is more powerful in promoting collagen regeneration and is therefore suitable for those with overall skin laxity. My problem was that my jawline was slightly blurred, so my doctor recommended that I undergo localized HIFU instead of the full-face Thermage treatment.

IV. Main treatments offered by Dayone Dermatology and reference prices for 2026

In Seoul, Dayone is considered to be a mid-to-high-end brand, known for its transparent pricing and personalized consultation services. The following are the reference prices for the main treatment programs at its Gangnam branch in 2026 (excluding 10% VAT):

HIFU/Lifting treatments

Treatment options	Reference price
400 hairs on the face + Inmode treatment + Lifting of the jawline	18 million yen
400 hairs on the face + LinearZ 40kj + Lifting injections	9.209 million
600 hairs on the face + LinearZ 40kj + Lifting injections	9.279 million
Face and Neck Package (including hyaluronic acid injections)	37.8 million yen

Thermage/RF treatments

Treatment options	Reference price
10 Triple 400 treatments (basic anti-aging package)	₩390,000
400 hairs for Oligio neck treatment + LinearZ facial treatment	₩690,000
10 Triple 300 units + 10 Therma 300 units	9.9 million yen

Injection-based treatments

Project	Reference price
Juvederm 1 centum core	1.7 million yen
Juvederm 2 centum core	₩350,000
1 bottle of Olida original glow serum	6 million yen
Botulinum toxin for 3 areas	1.7 million yen

Tips: The prices listed by Dayone do not include the 10% VAT in South Korea; this amount needs to be added accordingly. Nevertheless, overall, they still offer a better value for money compared to some high-end clinics in the Gangnam area.

V. What should foreigners pay attention to when visiting Dayone Dermatology in Seoul?

As someone who has traveled from Hong Kong in the past, I have some practical suggestions I would like to share:

• The necessity of making an advance reservation: Dayone enjoys a very good reputation in the local area, and its schedules are almost always full on weekends. It is recommended to make a reservation at least 1–2 weeks in advance.
• Bring your passport: Foreign patients must bring their passports when seeking medical treatment; without a passport, treatment may not be possible.
• Translation services: The clinic provides translation assistance from staff who understand Chinese, but this service is not available in every shift. It is recommended to indicate your language requirements when making a reservation through BeautsGO.
• Postoperative precautions: On the day of the HIFU procedure, the skin may become slightly red and swollen. It is recommended to take at least half a day off and avoid scheduling any busy activities.
• Exchange rate calculation: 9.1 million Korean won is approximately equivalent to 5,500–6,000 Hong Kong dollars, or 22,000–24,000 Taiwan dollars (please refer to the current exchange rate for any fluctuations).

VI. My actual experiences after undergoing local HIFU treatment

On the day of the treatment, the doctor chose the HIFU procedure for the lower face; the entire process took approximately 45 minutes. To be honest, there was some discomfort, especially in the area near the jawbone, but it was still within an acceptable range – the pain became much less noticeable after the doctor administered the anesthesia.

On the day after the surgery, my face was a bit red and slightly swollen, so I went back to the hotel and applied a facial mask to calm it down. The next day, my face had mostly returned to normal, and I was able to go out for shopping as usual. About a month later, the contours of my face had become much more defined; my friends even said I “looked slimmer,” but in fact, it was just that my facial features had become more defined. The results were actually better than I expected!

Frequently Asked Questions

Q1: How long does the effect of the Ulthera HIFU treatment at Dayone Dermatology last?

Doctors say that the effects of local HIFU treatment generally last for 12 to 18 months, and this period may vary depending on an individual’s metabolic rate. It is recommended to have a follow-up assessment after six months to determine whether additional treatment is needed.

Q2: Is it necessary to communicate in Korean when visiting Dayone Clinic?

No need! Dayone offers Chinese translation services, so Hong Kong and Taiwan tourists who book through BeautsGO can communicate entirely in Traditional Chinese, which is very convenient.

Q3: Is Dayone Dermatology suitable for people who are going to South Korea for medical aesthetics treatments for the first time?

It’s absolutely perfect! The doctors’ honest evaluations and their approach of not over-promoting services give first-time customers a sense of security. Moreover, the booking process at BeautsGO is transparent, and Chinese-language assistance is available throughout the entire process, eliminating any concerns regarding language barriers.

Q4: Can I continue my trip the day after undergoing HIFU?

Sure, but it is recommended to set aside some rest time on the same day; normal activities can be resumed from the next day onwards. Just avoid engaging in strenuous exercise or prolonged exposure to the sun on that day.

VII. How to make an appointment

The Dayone Dermatology Gangnam branch offers various reservation methods. Foreign tourists are highly recommended to use the BeautsGO platform for reservations, as the entire process is provided in Traditional Chinese, making it very convenient.

Method 1: Online reservation through BeautsGO (recommended)

Target audience: Chinese travelers from Hong Kong, Macau, Taiwan, and overseas who may have language barriers or are making their first reservation.

• Open the BeautsGO platform and search for “Dayone”.
• Select your preferred treatment package and the estimated date of your visit.
• Fill in basic information (name, get in touch details).
• The customer service team at BeautsGO will confirm the reservation within 24 hours.
• On the day of your visit, simply present the confirmation of your reservation.

Method 2: Make an appointment via LINE

Method 3: Booking via Gmail

Comparison Table of Booking Methods

How to make an appointment	Language	Response speed	Suitable for
BeautsGO (Recommendation)	Traditional Chinese	Within 24 hours	For travelers from Hong Kong/Taiwan, or those visiting for the first time
LINE	Chinese/English/Korean	Within a few hours	LINE users who have already used the service
Gmail	Traditional Chinese	1-2 working days	For those with longer itineraries planned

Tips: It is recommended to make an appointment at least 3 to 5 days in advance. Reservations for weekends and popular treatment packages tend to fill up quickly, so planning ahead ensures your place.