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Frizz control
Calms flyaways and frizz so hair looks smooth even on humid days.
Treatments & Head Spa
Keratin Treatment in Hongdae, Seoul
Smooth, glossy, frizz-free hair that still moves naturally — a keratin treatment tailored to your hair type, above Hongdae Station with English-friendly stylists.
Since 2005
English-friendly
8F · next to Hongdae Station
Frizz-free shine
Natural movement, no stiffness
Quick answer
What is a keratin treatment?
A keratin treatment is a professional smoothing service that infuses keratin protein into the hair to reduce frizz, smooth the cuticle and add shine, while keeping natural volume and movement. At Soonsiki Moment Hongdae in Seoul, stylists analyse your hair first and choose the keratin option that suits its thickness, condition and damage level.
- Best for Frizzy, unmanageable hair
- Finish Sleek but natural movement
- Includes Analysis, blow-dry, aftercare
- Language English-friendly
- Location 8F · next to Hongdae Station
- Price & time Ask us on WhatsApp
Why it matters
Sleek, soft and easy every day
Unlike permanent straightening, keratin keeps your hair’s natural shape — it simply looks healthier and more polished.
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Shine & softness
A smoother cuticle reflects light for a glossy, healthy-looking finish.
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Less styling time
Hair is easier to manage, so you spend less time with heat tools each morning.
Before
After
The transformation
From frizz to sleek, glossy ease
Keratin smooths the cuticle so hair looks polished and reflects light, while still moving naturally.
- Your hair is frizzy or hard to manage
- You want shine without losing volume
- Your hair is colored or chemically treated
- You prefer natural smoothness over pin-straight hair
Step by step
Your keratin treatment, step by step
Every keratin service follows a careful sequence, adjusted to your hair condition.
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Consultation & hair analysis
We assess hair condition, damage level and the finish you want.
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Deep cleansing shampoo
Removes buildup so the treatment absorbs evenly.
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Keratin application
The keratin formula is applied evenly through the hair.
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Processing time
The treatment is left to penetrate and work on the hair structure.
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Blow-dry & heat sealing
Heat locks in the keratin for lasting smoothness.
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Finishing & styling
Hair is styled to reveal a sleek, polished result.
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Aftercare guidance
Tips to maintain the results and help them last longer.
Expert behind this page
Seung Il
Head Stylist & CEO · Soonsiki Hair since 2005
Seung Il has led Soonsiki Hair since 2005 and worked with L’Oréal Professionnel Paris as a digital marketing advisor (2015–2017). His Hongdae team applies that professional-care experience to keratin, favouring natural-looking smoothness and long-term hair health over a stiff, flat finish.
- L’Oréal Asia Portfolio Member
- Judge · Asia Hair Designer Festival
- Speaker · Tokyo, Ho Chi Minh, Taiwan seminars
- Master Craftsman Barber
Reviewed by Seung Il · Last updated October 2026 · About our salon →
FAQ
Keratin treatment questions, answered
Which keratin options do you offer?
Options include Classic Keratin (smooths frizz, keeps volume), Express Keratin (faster, lighter effect), Intensive Repair Keratin (for damaged or chemically treated hair), Natural Smoothing (softness and movement) and Keratin + Styling Finish. Your stylist recommends one after the hair analysis.
Is keratin the same as magic straightening?
No. Keratin smooths and adds shine while keeping natural movement. If you want permanently straight hair, see our magic straight perm.
How long does a keratin treatment take and cost?
It is a longer service, and time and price depend on your hair length, thickness and option. Message us on WhatsApp for the current price and time, and book ahead.
Can I get keratin after bleaching or coloring?
Often yes — Intensive Repair Keratin is designed for damaged or chemically treated hair. For heavily bleached hair we may suggest Acmé Du Filler or Kérastase care as well.
Do you speak English?
Yes. Soonsiki Moment Hongdae is foreigner-friendly with English-speaking staff, and you can ask questions on WhatsApp before your visit.
Pair it with
Related services in Hongdae
Visit us
Find Soonsiki Moment Hongdae
- Address
- 8F, 164 Yanghwa-ro, Mapo-gu, Seoul — right next to Hongdae Station
- Hours
- Wed–Sun 10:00–19:00
Closed Mon & Tue - Phone
- +82-2-336-4816
- +82-10-9145-7402
Before you book
Keratin takes longer than most services, so book in advance. Send a photo of your hair and your color/bleach history on WhatsApp and we will confirm the right option, time and price.
Contact & directions Your moment
Smooth texture. Healthy shine.
Book your keratin treatment in Hongdae and enjoy effortless, frizz-free hair.
Book on WhatsApp