Sinchon salon hair botox care instead of a volume perm: Demon Hair

In short

Demon Hair Sinchon Branch is a hair salon on the second floor of the building right next to Hyundai Department Store Sinchon, near Sinchon Station in Seodaemun, Seoul. A hair test at Demon Hair showed protein-deficient hair, so the planned volume perm was postponed for One-Kill Botox Care, a recovery clinic using R07 Repair One-Kill Botox shampoo and cream finished with low-temperature magic straightening. One session at Demon Hair Sinchon Branch already left the hair visibly smoother and softer.

Hair after One-Kill Botox Care at Demon Hair Sinchon Branch

Good to know

Location
2nd floor, Building Na, 87-4 Sinchon-ro, Seodaemun-gu, Seoul — the building right next to Hyundai Department Store Sinchon
Treatment received
One-Kill Botox Care (damage recovery clinic)
Products used
R07 Repair One-Kill Botox Shampoo, R07 Repair One-Kill Botox Cream
Perk
30% off on a first visit
Service
Iced americano and a snack set served

as written by the visitor on Sep 23, 2026

Hair after One-Kill Botox Care at Demon Hair Sinchon Branch
Visiting Demon Hair, a Sinchon hair salon
Interior and treatment seat at Demon Hair Sinchon Branch
Hair condition before the recovery clinic

I've been growing out my hair lately, and I decided I wanted a calm, neat look — so I set my heart on a volume perm or volume magic straightening. Excited, I headed over to 'Demon Hair,' a Sinchon hair salon with great access right next to Hyundai Department Store Sinchon.

Iced americano and snacks during the treatment at Demon Hair

Tray with iced americano and snack set

Demon Hair Sinchon Branch brings out a tray with an iced americano and a snack set while you're getting your treatment. I got to enjoy watching the Sinchon street view through the window while relaxing. Thanks to the cold americano and tasty snacks to nibble on, it felt less like a salon and more like a nice café. Because of the thoughtful service, the whole care session flew by comfortably without a dull moment.

But my excitement over transforming my look didn't last long — after consulting with the designer and doing a hair test, I was shocked. Apparently, because I'd been neglecting home care, my hair was seriously lacking in protein, with zero elasticity and prone to breaking, ugh. She said using a hair straightener daily to look neat was probably the cause.

I was told that if I went ahead with the perm in this state, my hair would be completely ruined, so I sadly decided to postpone it. Instead, I was recommended the 'One-Kill Botox Care' to firmly refill my collapsed hair from the inside!

How to find Demon Hair Sinchon Branch next to Hyundai Department Store

  • Convenient location: right next to Hyundai Department Store Sinchon, so it's really easy to drop by before or after other errands.
  • Friendly, personalized consultation: instead of pushing a style on me, they carefully tested and diagnosed my hair condition, which really built trust. They explained clearly why I shouldn't get a perm with protein-deficient hair, and I could totally understand.
Exterior of Demon Hair Sinchon Branch next to Hyundai Department Store Sinchon
Entrance and signage at Demon Hair Sinchon Branch
Consultation area at the Sinchon hair salon

Hair test result: protein deficiency, and why One-Kill Botox Care came first

Checking protein levels with a hair test
Consultation for the One-Kill Botox Care

When you're growing your hair out, keeping it in healthy condition turns out to be the most important thing. The importance of refilling protein: the reason hair loses strength and breaks is because it's empty of nutrients and protein, and once that's pinpointed, the emergency treatment prescribed is exactly this One-Kill Botox Care.

This systematic care process is a premium recovery clinic that packs protein and nutrients deep into damaged hair to restore elasticity. I figured that to get a beautiful perm eventually, now was the time to lay a solid foundation.

R07 Repair One-Kill Botox Shampoo product
Applying the One-Kill Botox Shampoo

What the R07 Repair One-Kill Botox Shampoo step does

The R07 Repair One-Kill Botox Shampoo contains aroma and peptide ingredients, and it's a large-capacity volume shampoo that supplies nutrients to damaged hair while boosting volume. You don't rinse it out right away — you have to wait about 10 minutes.

Rinsing after the 10-minute shampoo wait

Even just one shampoo already felt a bit softer, haha.

Hair softened after the shampoo
Clinic treatment in progress at the Sinchon salon
R07 Repair One-Kill Botox Cream product

R07 Repair One-Kill Botox Cream and low-temperature magic straightening

The R07 Repair One-Kill Botox Cream is a hair treatment cream that densely fills the inside of severely damaged hair, giving it elasticity and shine. It's a specialized product mainly used for intensive care on hair damaged by perms or dyeing, and for 'hair botox' treatments that add strength and bounce back into the hair.

After applying the cream, two hair designers worked incredibly fast — not spinning it around exactly, haha, but applying the treatment and rolling it at lightning speed. Then they used low-temperature magic straightening to help it soak in even deeper, taking care with every strand.

Low-temperature magic care to help the botox cream absorb
Two designers rolling and caring for the hair

Is the hair healthy enough for a volume perm next time?

Hair after finishing the One-Kill Botox Care

One session of the recovery clinic alone isn't a complete fix, and I was told I need to keep at it consistently to really see results — but I can already feel the improvement.

Glossy hair after the recovery clinic
Full length of the grown-out hair after care

It was a little disappointing not to get the volume perm or volume magic I originally wanted right away, but in the long run I think it was the smart choice to save my hair. Healthy hair first: now that I've refilled my hair with plenty of protein through the One-Kill Botox Care, I'm planning to keep up with home care and come back for that pretty perm once my hair is a bit healthier.

Overall verdict: if you're struggling with damaged hair, or like me you need solid foundational care before a perm, I sincerely recommend the One-Kill Botox Care at Demon Hair Sinchon. And apparently you're also supposed to get more protein by eating it, haha.

Finishing touches at Demon Hair Sinchon Branch
Full-body shot of neatly styled hair after the clinic

Apparently layered cuts, dyeing, and perms are all 30% off for first-time visitors at this Sinchon Station hair salon.

Where it is

Demon Hair Sinchon Branch데몬헤어 신촌점

87-4 Sinchon-ro, Building B, 2nd floor, Seodaemun-gu, Seoul, South Korea서울특별시 서대문구 신촌로 87-4 나동 2층

Open in Google Maps

Local places · Hair & beauty salons