# Seongdong hair salon scalp diagnosis and damaged-hair care: Salon de L

- By Juri (https://superchart.com/en/@mirror-corner/)
- Written Sep 12, 2026
- Local places › Hair & beauty salons › Seongdong, Seoul
- Sponsored: This review was written with support for a visit to the store.
- English edition: https://superchart.com/en/@mirror-corner/wangsimni-scalp-clinic-salondel/
- Also in: [한국어](https://superchart.com/ko/@mirror-corner/wangsimni-scalp-clinic-salondel/index.md)

## In short

Salon de L is a hair salon in Seongdong, Seoul. I had a Smart Mirror scalp diagnosis and a four-step Trisis Core Clinic treatment, which made my frizzy, split ends look much smoother. Verdict: Salon de L was a great choice for detailed scalp and damaged-hair care.

## Good to know

- **Area**: Seongdong, Seoul
- **Treatment**: Smart Mirror scalp diagnosis and four-step Trisis Core Clinic
- **Visit date**: Unknown

*as written by the visitor on Sep 12, 2026*

## From scalp diagnosis to the Trisis Core Clinic

I found Salon de L while searching for a recommended hair salon in Wangsimni. I went all in, from a scalp diagnosis to the Trisis Core Clinic, and I’ll show you the finished hair first ❤️ The texture looked so different that I wondered if it was really the same person’s hair 🤍

![Hair texture transformed after the Trisis Core Clinic](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-01-bijdi-1200.webp)

This is the building where the salon is. It is a shopping complex with Compose Coffee and Gimgane on the first floor, so it wasn’t hard to find haha.

![Shopping-complex building where Salon de L is located](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-02-dt9hx-900.webp)

The entrance has floor-to-ceiling glass like this. You can see clearly inside, so I felt comfortable walking in even on my first visit.

![Salon de L entrance with floor-to-ceiling glass](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-03-1svnm-900.webp)

Inside, it has warm wood tones with yellow accents. It was more spacious than I expected and very neatly kept, so I had a good first impression right away haha.

![Salon interior with wood tones and yellow accents](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-04-1qjqa-900.webp)

Each station was neatly set up with a mirror and equipment. The screen on the left is the scalp-diagnosis machine you’ll see later!

![Treatment station set with a mirror and equipment](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-05-6cz6m-900.webp)

There is a separate waiting area by the window like this. It has tables, so it was nice to sit comfortably while waiting. There were also nail polishes displayed on one side. So many colors, right? Haha.

![Waiting area with tables by the window](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-06-a3f72-900.webp)

Once I sat down, they brought me a drink and snacks. Iced tea, butter biscuits, and roasted rice chips ❤️ The Trisis Core Clinic is a multi-step treatment, so it takes a little time, but these treats meant the wait was not boring at all.

![Complimentary iced tea and snacks](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-07-1dv7i-900.webp)

## How does the Smart Mirror scalp diagnosis work?

First, we started with a scalp diagnosis using the Smart Mirror. They said it analyzes your scalp according to the gender and date of birth you enter. It was so fascinating to see a keyboard appear on the mirror, hahaha. It is not often that you find a Wangsimni hair salon that even offers a scalp diagnosis.

![Smart Mirror scalp diagnosis screen](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-08-l7tk0-900.webp)

![Smart Mirror displaying a keyboard](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-09-1urr6-900.webp)

Next, they photographed different areas of my scalp. They took a total of seven shots, including the crown, frontal area, temples, and back of the head. The magnified scalp images appeared on screen right away, and it was actually fun to look at haha.

![Scalp diagnosis imaging different areas](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-10-1b0yc-900.webp)

After all seven areas were photographed, we pressed the button to start the consultation. It only took a few minutes to get to this point!

![Scalp diagnosis screen before starting the consultation](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-11-jvosh-900.webp)

And here are my scalp-analysis results ❤️ Five categories—dead skin cells, sebum, dandruff, hair loss, and sensitivity—appear in a pentagon. The director said it had been a long time since they had seen such a clean scalp as mine 🥹 They said it is unusual for the pentagon to be this balanced with such high scores, and they went through each result in such an interesting way haha. The explanation was so kind that I enjoyed the whole diagnosis 🤍

![Scalp-analysis results across five categories](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-12-1ypxi-900.webp)

![Scalp-analysis results reviewed during the consultation](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-13-kvqny-900.webp)

## Starting the four-step clinic for damaged hair

My scalp got compliments, but my hair condition was the problem ㅠㅠ After shampooing, we checked it again. When you hold it up like this, you can really see the damage, right? The further down it went, the frizzier and more split the ends were 🥲 That was the state my hair was in when we began the Trisis Core Clinic.

![Damaged hair ends before the clinic treatment](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-14-15p1p-900.webp)

The Trisis Core Clinic is a four-step treatment system. Filling, forming a barrier, wrapping, and hydrophobizing—products with different roles are used in order at each stage. They explained every step with an information sheet, so it was easy to understand ❤️

![Trisis Core four-step treatment guide](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-15-17tzr-900.webp)

![Salon de L scalp diagnosis and damaged-hair clinic in Wangsimni](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-16-t7a90-900.webp)

These are the Trisis Core products they actually use. KL, KM, CO, CEc, CEm, 18S, KH… there are so many kinds haha. They select the ones suited to my hair condition. They carefully applied the first-step product, then used heat treatment over it. The machine gave off a red light, and my hair felt warm.

They applied the second-step product like this, too. They worked it through strand by strand with a comb—it was really thorough ❤️

![Second-step clinic product being applied to hair](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-17-1lwqi-900.webp)

After applying everything, they turned on the steam. They really did it properly—there was enough vapor to look like this, hahaha. So good! Halfway through, they gave my hair a light wash and then continued the treatment.

![Clinic treatment process using steam](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-18-1mcsn-900.webp)

![Clinic treatment continuing after an interim shampoo](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-19-id2c1-900.webp)

After that, they sprayed on the third-step product and quickly worked in the fourth-step treatment! Their hands moved so fast.... They worked really efficiently, which saved time >0<

![Third- and fourth-step clinic treatment](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-20-1ic2e-900.webp)

With heat and steam at every stage, it definitely felt different from an ordinary treatment.

![Clinic treatment process with heat and steam](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-21-1nfcm-900.webp)

![Hair being dried after shampooing](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-22-1qtlg-900.webp)

## How the texture changed after the Trisis Core Clinic

Finally, they shampooed my hair and dried it beautifully. The left side is wet, and the right side is completely dry.

![Comparison of wet and dried hair](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-23-ywwrq-900.webp)

Ta-da~~~ Here is the result!!! ㅠㅠ Is this really the same frizzy hair from before?

![Shiny, smoothed hair after the clinic treatment](https://img.superchart.com/images/wangsimni-scalp-clinic-salondel/wangsimni-scalp-clinic-salondel-24-17jal-900.webp)

Can you see the shine when the light hits it? When I run my hand through it, it glides all the way down without catching ❤️ The split ends looked much more tidy, too 🤍 I even filmed how the texture moved as my hair swayed. I honestly did not expect it to change this much after just one Trisis Core Clinic treatment 🥹

For anyone looking for a recommended Wangsimni hair salon, especially if you are worried about your hair condition, I really recommend Salon de L. Starting with an accurate scalp diagnosis and then tailoring the Trisis Core Clinic to it made a real difference. The director was so kind and explained everything in detail, so I felt comfortable throughout the treatment ❤️ If you want to revive your hair, I think it would be worth giving it a try 🤍

## Where it is

- Salon de L (살롱드엘) (살롱드엘)
- 115, 2F, Tenz Hill Mall, 137 Majang-ro, Seongdong-gu, Seoul, South Korea
- 서울특별시 성동구 마장로 137 텐즈힐몰2층 115호
- 37.569977, 127.0236699
- Google Maps: https://www.google.com/maps/search/%EC%82%B4%EB%A1%B1%EB%93%9C%EC%97%98/@37.569977,127.0236699,17z

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