# Gangnam hairline tattoo studio: 2-3mm hair strokes at Siere Brow

- By Nari Cho (https://superchart.com/en/@yongdu-supper-nook/)
- Written Sep 22, 2026
- Local places › Hair & beauty salons › Seocho, Seoul
- Sponsored: This post was written after receiving a treatment as part of a sponsored visit to Siere Brow.
- English edition: https://superchart.com/en/@yongdu-supper-nook/gangnam-hairline-semi-permanent-hairstroke-siel/
- Also in: [한국어](https://superchart.com/ko/@yongdu-supper-nook/gangnam-hairline-semi-permanent-hairstroke-siel/index.md)

## In short

Siere Brow is a semi-permanent makeup studio on the 5th floor of Hyundai Girim Officetel, near Exit 5 of Gangnam Station (Sinbundang Line) in Seocho, Seoul. After an earlier hairline SMP left dot-like marks, Siere Brow used an embo hair stroke technique that evened out the M-shaped asymmetry and lowered the hairline by only 2-3mm, with the hairline priced at 350,000 won and eyebrows at 250,000 won. The strokes blended into the existing baby hairs so well that friends met over the weekend noticed nothing.

## Good to know

- **Location**: 5F, Room 512, 42 Seocho-daero 78-gil, Seocho-gu, Seoul (Exit 5, Gangnam Station, Sinbundang Line)
- **Hairline tattoo**: 350,000 won (retouch included)
- **Eyebrow tattoo**: 250,000 won (retouch included)
- **Technique**: Embo-method hair strokes
- **Design**: Asymmetry corrected, hairline lowered about 2-3mm
- **Inside**: 2 treatment beds, consultation table
- **Retouch**: Recommended 4-8 weeks after the session
- **Price reference**: ₩350,000 ≈ $255 · ₩250,000 ≈ $182 (2026-09-22)

*as written by the visitor on Sep 22, 2026*

> I'd had a hairline SMP before that ended up looking like a bunch of dots, which was a letdown. This time, each strand was drawn individually like my own baby hairs, so natural that even my friends couldn't tell.

![Front view of a woman's M-shape hairline corrected with hair stroke](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-01-1es3m-m-1200.webp)

This is your trusted Yeomi unnie.🧚🏻‍♀️✨ My M-shape hairline isn't that severe, but whenever I tied my hair up or took photos, the asymmetry on both sides and the white scalp peeking through my parting always bothered me. I used to reach for hair fluff powder every time I did a bun, but this time I got a Gangnam hairline semi-permanent treatment that doesn't drastically lower the hairline — it just naturally fills in the sparse spots.

Check out the full process and the look right after in the video. What I was most satisfied with was that the lines weren't overly dark and blended naturally with my existing baby hairs.

## Where Siere Brow is and what a hairline tattoo costs in Gangnam

![Street in front of Exit 5, Gangnam Station, Sinbundang Line](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-02-1tcvu-740.webp)

![Alley leading to Hyundai Girim Officetel where Siere Brow is located](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-03-1hw09-740.webp)

![Entrance of the officetel building housing Siere Brow](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-04-15qkb-741.webp)

Coming out of Exit 5 of Gangnam Station (Sinbundang Line), turn into the first alley, head toward the parking lot next to GS, and you'll see Hyundai Girim Officetel.

📍 Siere Brow / 5F, 42 Seocho-daero 78-gil, Seocho-gu, Seoul, South Korea

💰 Cost — the hairline treatment was ₩350,000 and eyebrows were ₩250,000, retouch included! Prices may vary slightly after consultation.

## When is a hairline tattoo worth it?

- If tying your hair up makes the M-shape on both sides stand out
- If your left and right hairline look different
- If you often use hair fluff powder or hair fibers
- If you want to correct without drastically changing your forehead line

A hairline semi-permanent treatment isn't a hair-loss treatment that makes hair grow — it's a way to visually correct the M-shape, asymmetry, and scalp showing through thin hair.

If you're suddenly losing a lot of hair or your hairline is receding quickly, talk to a medical professional first. Because the hairline is right next to the face, designing it too low or too straight can look unnatural. Rather than just copying a trendy shape, you should check how it looks both with your hair down and tied up, and match it to your own face line.

## Fixing the M-shaped asymmetry and lowering the hairline just 2-3mm

![Both sides of the M-shape hairline asymmetry revealed with hair pushed back](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-05-12xhz-740.webp)

Normally my baby hairs covered it, but when I pushed my hair back, the M-shape asymmetry on both sides showed. After the consultation, we decided not to drastically lower the hairline but instead balance the asymmetry and naturally fill in about 2-3mm.

![Consultation table inside Siere Brow](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-06-jkz6n-741.webp)

![Treatment bed area at Siere Brow](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-07-n89sn-741.webp)

![Overall view of the tidy treatment room at Siere Brow](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-08-1aog7-741.webp)

Inside there were 2 treatment beds and a consultation table, and everything was neatly organized overall.

## SMP vs gradation vs hair strokes: why hair strokes won this time

![Consultation on hairline semi-permanent technique](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-09-wef2d-741.webp)

![Checking hair color and thickness during consultation](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-10-1dbp8-741.webp)

During the consultation I mentioned my previous SMP result was disappointing and that I didn't want the front border to stand out. They matched my hair color, thickness, and growth direction, drawing each strand individually with the embo hair stroke technique, and since my M-shape wasn't severe, they didn't densely fill the inner area. The scalp's center and front hairline look different, so it was important to pick the right technique for each area. If you have scalp wounds or inflammation, skin conditions, allergy history, medications, or are pregnant/breastfeeding, it's best to mention it before booking.

![First hairline guideline marked with a red pen](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-11-1fdbg-740.webp)

![Second hairline design with each strand drawn individually](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-12-1o1ln-740.webp)

They marked the first guideline with a red pen and applied a numbing agent for about 20 minutes. Then I checked the second design, where each strand of hair was drawn — at first I was a little worried it might look unnatural.

## The finished hairline looked like my own baby hair

![Forehead hairline right after the hair stroke treatment](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-13-mset6-740.webp)

![Vertical shot of hairline with hair pushed back right after treatment](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-14-1rz2m-740.webp)

I barely felt any pain, so I actually dozed off partway through, haha. The finished look wasn't like a dark, dotted scalp at all — it looked so natural, like thin baby hairs connecting between my existing hair, that I was genuinely surprised. I was like, 'Wait, was this always my own baby hair?' Since I'd had a bad experience before, the difference in results felt even bigger.

![Close-up of hair stroke strands and density](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-15-19d3y-740.webp)

Even up close, the lines weren't thick or overly dark, and I loved the strand density matched to my hair color.

![Hairline blending naturally when hair is worn down](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-16-snuji-740.webp)

When I let my hair down, it connected naturally with my existing baby hairs, and the border of the treated area was barely visible.

![Full view of the hairline with no visible border](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-17-1uw7b-740.webp)

## Even my friends couldn't tell I'd had it done

I met up with friends that weekend right after the treatment, and nobody noticed until I told them myself, haha.

I used to need hair fluff powder for my M-shape without fail, but now the white scalp shows much less even without it.

![Hairline with hair tied up and no hair fluff powder used](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-18-1u3bg-m-740.webp)

Even from the side, it wasn't stiff like a straight line — it blended softly with my existing baby hairs.

![Soft hairline curve viewed from the side](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-19-3yqbr-740.webp)

![Baby hairs connecting at the side M-shape area](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-20-1a89t-740.webp)

## Hairline tattoo aftercare: scabbing, shampooing and retouch

- Shampooing possible after 24 hours; 3-5 days recommended if possible
- Avoid strong shampooing and rubbing the treated area
- Apply recovery cream for about 5 days
- Scabbing sheds within 7 days — don't pick at it
- Avoid saunas and jjimjilbangs for 7 days
- Avoid dyeing/perming for at least 2 weeks, ideally wait 3 weeks
- Retouch recommended 4-8 weeks after treatment

Recovery periods can vary depending on skin condition and technique, so always prioritize the guidance given at your treatment location. If redness, heat, worsening pain, or any unusual skin reaction appears during recovery, don't apply products on your own — contact the studio and see a medical professional if needed.

![Hairline semi-permanent condition during recovery period](https://img.superchart.com/images/gangnam-hairline-semi-permanent-hairstroke-siel/gangnam-hairline-semi-permanent-hairstroke-siel-21-13lra-m-740.webp)

## Yeomi's verdict on Siere Brow

- ⭐ Naturalness: hair stroke lines as thin as my own baby hairs
- ⭐ Design: corrected the M-shape without drastically lowering the hairline
- ⭐ Pain: I nearly fell asleep, but this varies by person
- 👍 Pros: natural expression considering hair color and direction
- 🤔 Things to note: the right technique depends on scalp and hair condition
- Would I return: YES

This would suit people like me who don't want a full hairline overhaul, just a natural fix for the M-shape and white scalp that shows when tying hair up.

## Where it is

- Siere Brow (시에르브로우)
- 5F, 42 Seocho-daero 78-gil, Seocho-gu, Seoul, South Korea
- 서울특별시 서초구 서초대로78길 42 5층 512호
- 37.4940339, 127.0282402
- Google Maps: https://www.google.com/maps/search/%EC%8B%9C%EC%97%90%EB%A5%B4%EB%B8%8C%EB%A1%9C%EC%9A%B0/@37.4940339,127.0282402,17z

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