Hair too damaged to perm: keratin clinic at Gangnam hair salon Beorn

In short

Beorn Hair Cheongdam is a hair salon on Seonneung-ro near Gangnam-gu Office Station in Seoul, where designer Ko Do-hee performed an inner keratin clinic treatment. The hair had been turned away for a perm two months earlier because of damage and cut into a bob, so the session ran about 1 hour 20 minutes, from detox shampoo through to strengthening the protective coating, with three intensive sessions three weeks apart recommended. One treatment at Beorn Hair Cheongdam did not fully restore the hair, but the stiffness at the ends softened noticeably.

Featured photo of the inner keratin clinic at Beorn Hair Cheongdam

Good to know

Treatment
Inner keratin clinic
Stylist
Designer Ko Do-hee
Duration
About 1 hour 20 minutes
Recommended cycle
3 intensive sessions, 3 weeks apart
Location
2F, 710 Seonneung-ro, Gangnam-gu, Seoul (Gangnam-gu Office Station)
Service
Americano and snacks provided

as written by the visitor on Sep 18, 2026

Featured photo of the inner keratin clinic at Beorn Hair Cheongdam

I've been really stressed about my hair lately. Two months ago I went to a salon wanting a perm, but they told me my hair was too damaged from frequent dyeing to do it. T.T

So that day I ended up cutting my long hair into a bob. About a month later I tried a clinic treatment once, and it seemed fine at first, but over time my hair got dry and frizzy again.

Frizzy bob hair before the clinic treatment

So this time I wanted to get a proper clinic treatment, and after some searching I visited Beorn Hair Cheongdam, a hair salon near Gangnam-gu Office Station. The treatment I got was the inner keratin clinic.

Where is Beorn Hair Cheongdam, near Gangnam-gu Office Station?

Beorn Hair Cheongdam was easy enough to find from Gangnam-gu Office Station. Since it's a salon in Cheongdam-dong I was a little nervous, but once I actually visited it felt comfortable and easy to relax in rather than intimidating. My hair was so damaged this time that I came purely for the clinic treatment, not a cut or perm.

Inside the salon

Clean interior of Beorn Hair Cheongdam

The inside of the salon felt clean and calm.

Tidy treatment area of the salon
Calm interior design of the salon

Everything was well organized overall and the space didn't feel stuffy, which I liked. With a clinic treatment you're sitting there for over an hour, right? So the atmosphere of the salon quietly matters to me too — it was nice to be able to relax comfortably while getting treated. That day I was treated by designer Ko Do-hee.

Hair consultation: why does hair go dry again so soon after a clinic treatment?

Hair consultation before the treatment

Before the clinic treatment, she checked the condition of my hair first, and as expected, she said it was extremely dry.

Checking hair diagnosed as dry

She said there was also a serious lack of nutrients inside the hair strands. But the way she explained it was really easy to understand. She said my hair right now was like dried-out ground.

If the ground is already bone dry and you only water it once every month or two, it's only okay right when you water it and dries out again fast. So instead of getting a clinic treatment sporadically once a month or two, she recommended three intensive sessions three weeks apart. She said if you fill it up with nutrients thoroughly at first, the hair will gradually stabilize afterward — and hearing that explained exactly why my hair had gone frizzy again so quickly after my last clinic treatment.

How the inner keratin clinic works, step by step

The inner keratin clinic wasn't just one product applied once — it went through several stages.

Step 1: detox shampoo

Detox shampoo step clearing away buildup

This cleared away the buildup on the surface of the hair. It genuinely felt so refreshing and I was so happy!! After that came

Step 2: keratin protein replenishment

Keratin protein replenishment treatment

She said this step fills damaged hair with protein.

Americano and snacks provided during the treatment
Waiting in the treatment chair

They also brought me an Americano and some snacks haha. After that came

Step 3: heating cap

Heating cap step of the clinic treatment
Heating cap helping the keratin absorb

She said this step helps the keratin protein penetrate deep into the hair.

Step 4: NMF moisture replenishment

Since my hair is so dry, this was the step I was personally most looking forward to. She said it fills the dry inner hair with moisture and builds a basic foundation. After that came

Step 5: nano steam

Nano steam step opening the cuticle

She said this opens the cuticle so the nutrients applied earlier get absorbed better.

Step 6: CMC replenishment

CMC replenishment treatment

filled the hair with protein, moisture, and lipids all the way inside.

Finally, they finished with protective coating reinforcement — a step that smooths out cracked, lifted cuticles while adding shine and firmness.

How long the treatment took: about 1 hour 20 minutes

Hair after the roughly 1 hour 20 minute treatment
Bob hair styled after the clinic finished
Back view after the inner keratin clinic

How the hair felt after the keratin clinic

After everything was done, I touched my hair, and the first thing I noticed was that it was definitely softer.

Close-up of softened hair texture

The ends used to feel dry and stiff, but after the clinic treatment everything felt calmer and more settled overall.

Calmly settled hair ends

When I ran my hand through it, the texture was much softer too.

Hair after running a hand through it post-treatment

Honestly, my hair was so damaged two months ago that I couldn't even get a perm, so I don't expect one clinic treatment to fix everything completely.

What I liked even more was that designer Ko Do-hee was upfront about the care cycle suited to my current condition.

Designer Ko Do-hee finishing up after the treatment

If you're like me — hair badly damaged from frequent dyeing or perming, or hair that goes frizzy again fast even after a clinic treatment — I think it's worth trying the inner keratin clinic at Beorn Hair Cheongdam, a hair salon near Gangnam-gu Office Station.

Exterior of Beorn Hair Cheongdam
Interior of Beorn Hair Cheongdam near Gangnam-gu Office Station

I'm planning to go back in three weeks to fill it up with nutrients again. 😊

Where it is

Beorn Hair Cheongdam비오른헤어 청담점

2F, 710 Seonneung-ro, Gangnam-gu, Seoul, South Korea서울특별시 강남구 선릉로 710 2층 비오른헤어

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