Seodaemun hair salon red-tone-cancelling brown dye: Salon de Supullim

In short

Salon de Supullim is a hair salon in Seodaemun, Seoul, one minute from Seodaemun Station Exit 2 at 32 Tongil-ro 9an-gil, 3rd floor. A stylist with 17 years of experience used L'Oréal Professionnel color to tone down hair left blotchy and red from a dye job the year before, then finished with a post-color clinic treatment. There was no scalp stinging, the red tones were gone, and the result landed exactly where it should: neither black nor brown.

Main image from the Salon de Supullim dye review

Good to know

Location
32 Tongil-ro 9an-gil, 3rd floor, Seodaemun-gu, Seoul (1 minute from Seodaemun Station Exit 2)
Hours
10:30 AM – 8:00 PM
Closed
Tuesdays
Reservations
Bookable through Naver Place
Service received
Tone-down brown dye + post-color clinic treatment
Products used
L'Oréal Professionnel (premium partner salon)

as written by the visitor on Aug 21, 2026

Main image from the Salon de Supullim dye review

I hadn't been taking care of my hair for so long that the red tones creeping in were really starting to bother me. I went to Salon de Supullim, a hair salon near Seodaemun Station, and got a red-free brown dye haha. Part of it was that it's close to my office, but the reviews were so good I decided to check it out!

Where is Salon de Supullim and how do you book?

Salon de Supullim is at 32 Tongil-ro 9an-gil, 3rd floor, Seodaemun-gu, Seoul, one minute from Seodaemun Station Exit 2. Hours are 10:30 AM to 8:00 PM, closed Tuesdays, and you can book through Naver Place. I made my reservation with the deputy director.

Exterior of the building housing Salon de Supullim near Seodaemun Station Exit 2

Salon de Supullim is in the same building as the Seodaemun branch of Yeoptteok (a spicy rice cake chain)! Being so close to the station made it super convenient to visit.

Stairway up to the 3rd floor where Salon de Supullim is located
Spacious, clean interior of Salon de Supullim

Going up to the 3rd floor, there's a spacious, clean salon — there were way more customers than I expected, and the shop was bigger than I thought too,,?!

They greeted me kindly right away and confirmed my reservation, which put me in a good mood.

Sign for L'Oréal Professionnel premium partner salon

A L'Oréal Professionnel premium partner salon

Salon de Supullim is apparently a L'Oréal Professionnel premium partner. I already knew L'Oréal dye was well-regarded, but it was reassuring to see they only use good products! Damage was my biggest worry with dyeing, so hearing it was L'Oréal gave me confidence.

Waiting area at Salon de Supullim
Salon treatment area filled with customers

The waiting area was clean and almost every seat was taken,,! I went during rush hour after work and it was pretty packed. From the director to every designer, everyone was hardworking and kind.

Seat where the tone-down dye treatment took place

Before the color: blotchy hair with red tones showing through

I visited Salon de Supullim for a tone-down dye! I hadn't taken care of my hair after dyeing it last year, so it had gotten blotchy and messy ,, ㅠ_ㅠ Really didn't want to look at it,,,

Before

Hair before dyeing, blotchy and showing red tones

Here's a photo of my hair before dyeing! You can see the hair is basically pretty damaged, and overall it's blotchy plus reddish, right? I asked them to tone down the red as much as possible! Red tones make your face look sallow...

Scalp protectant and L'Oréal dye products

Scalp protectant first, and seeing the exact dye being used

They started by spraying on scalp protectant, then showed me the actual L'Oréal product they'd use. A lot of salons charge separately for regular vs. premium dye, right? But you can never really tell unless you see it with your own eyes ㅠㅠ Having them show it to me directly put me more at ease!

Deputy director applying the dye

The deputy director, with 17 years of experience, applied the dye really fast, sak-sak haha. Her hands were seriously,, quick,,,

Actually, right before this, I'd gotten a chemical burn on the back of my neck during a previous dye job that itched for months and left a scar ,, ㅠㅠ so I was kind of scared to dye again. But maybe because they used good products, I didn't feel much irritation at all, and my scalp didn't sting!

Hair with dye applied, sitting to process

After applying the dye, they let it sit for a while

Hair after the dye has been rinsed out

Then rinsed it all out!

Finishing clinic treatment after the dye

They finished with a clinic treatment. My hair was already dry and brittle so that was stressing me out 💦 but getting a clinic treatment right after dyeing eased my worries about damage and was totally healing.

The finished tone-down brown: did the red tones go away?

After

Finished tone-down brown dye with red tones corrected

Clean tone-down dye complete at Salon de Supullim! The red tones I was worried about are gone and my hair looks healthier too. I wanted a color that was neither black nor brown, and the deputy director matched it perfectly 🥹 I get now why they have so many reviews and repeat visitors,,

It's been a while since I dyed my hair so it was refreshing, and usually dyeing damages my hair and causes skin trouble, but none of that happened this time — I'm so satisfied! If you want to dye your hair but want minimal damage, I recommend Salon de Supullim haha.

Where it is

Salon de Supullim살롱 드 수풀림

32 Tongil-ro 9an-gil, 3rd floor, Seodaemun-gu, Seoul, South Korea서울특별시 서대문구 통일로9안길 32 3층

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