4.9/5 out of 13k+ reviews
Korea's #1 Hair Growth Serum
Visible regrowth in 14 days
Hair loss stops immediately
Fills in bald spots. Thickens the hair. Leaves no oily residue.
97% recorded new growth within 30 days
WARNING: Low Stock Notice
This product sold out 11 times last year. We encourage you to take advantage of the Limited Time Sale and buy now.
Ingredients and benefits
Caffeine – Helps stimulate hair follicles and improve scalp circulation, promoting healthier hair growth.
Fenugreek extract – Help strengthen hair roots and reduce hair loss.
Botanical extract complex – Helps soothe the scalp, reduce inflammation, and create a healthier environment for hair growth.
Menthol – Stimulates blood flow to the scalp and provides a pleasant, refreshing sensation.
Glycerin – Helps hydrate the scalp and prevent dryness that can weaken hair roots.
Completely fragrance-free !
Is it suitable for my hair type ?
Yes. Our Korean formula is designed for all hair types : straight, wavy, curly, and frizz-prone.
This serum works directly on the scalp without feeling greasy or leaving residue, making it suitable for both fine and thick hair.
It can be applied to either wet or dry hair, making it easy to incorporate into your daily routine.
When will my order be shipped ?
Once the order is placed, shipment usually takes place within 1–2 business days. Delivery times are generally 5–8 business days, but may be longer depending on the location.
VISIBLE RESULTS IN WEEKS
Discover why thousands of people have regained their self-confidence thanks to Kosean
13K+ Happy Customers
Thousands Love Kosean !
THE RESULTS SPEAK FOR THEMSELVES
Finally a serum that doesn't smell like chemicals. It has a nice, fresh scent that fades quickly. I've noticed my hair looks a lot more lively and less flat, even on days when I don't use any other styling products.
Verified
Alice D.
I love the cooling sensation from the menthol; it feels like it's actually doing something immediately. My hair doesn't feel as brittle anymore, and I'm seeing some steady new growth along my part line which used to be so wide.
Verified
Marc R.
After months of hair loss, I’ve seen stronger hair and incredible growth. My confidence is back !
Verified
Laura G.
It took about three weeks of daily use before I saw any change, so don't expect a miracle in two days. But now that I'm on my second tube, my hair definitely feels healthier and has much better volume when I blow dry it.
Verified
Elizabeth R.
I have oily fine hair. Every serum I’ve tried makes my roots look unwashed by noon. This one doesn’t. It dries down fast, doesn’t leave that stringy wet look, and I can use it before work without my hair looking greasy after.
Vérifié
Alison M.
Four months in. My part line is not magically gone, but it’s way less harsh in bright bathroom lighting. That’s enough for me.
Certifié
Chrstine B.
Genuinely didn't think this would work. I've tried biotin gummies, rosemary oil, collagen, Nothing worked. I wasn't even that hopeful when I ordered this honestly. But around the 5 week mark I noticed my crown looked different in photos, like fuller. I can't explain why this one worked when nothing else did but something is clearly different about it. Still using it.
Vérifié
Jordan B.
I avoided anything hair-growth related for years because I didn’t want the minoxidil dependency thing. I was scared if I stopped everything would fall out. This seemed way less intense. It’s light and doesn’t make my scalp greasy, and I’ve missed some weeks when they were out of stock without shedding.
Verifié
Zuri W.
Been thinning since my mid-30s. Tried vitamins, rosemary, pumpkin seed oil, all the usual stuff. About 6 weeks in, my hairline is the first place I noticed a difference. Nothing crazy, just small new growth where it had been looking thin.
Verifié
Dana K.
I’m very skeptical of TikTok hair products, especially anything claiming growth. I’ve bought too many things that did nothing except make my scalp itchy. This was different mostly because it actually felt like scalp care, not just another hair product. Less shedding first, then my hair started looking denser around the front. Not overnight, but real enough that I reordered.
Vérifié
Amanda L.
ADVANCED TECHNOLOGY
Scalp restoration (WEEKS 1–2)
✓ The scalp begins to feel cleaner and less itchy
✓ Cooling menthol immediately soothes irritation
✓ No major changes yet, but scalp is getting ready
Less hair loss (WEEKS 3–4)
✓ Far less hair in the shower drain
✓ The brush stays cleaner day after day
✓ Roots appear stronger and more defined
New growth begins (WEEKS 5–8)
✓ Fine, wispy hairs begin to sprout along the hairline
✓ The parting appears narrower and more defined
✓ Hair looks thicker and more voluminous
✓ Friends and family start to notice the difference
YOUR TRANSFORMATIONS
Kosean transforms. Discover how our clients have rediscovered their hair and their self-confidence.
REAL RESULTS
94% of subjects in clinical trials experienced a visible increase in hair thickness within one week.
Dream hair
87%
87%
Observed a significant decrease in hair loss/thinning
92%
92%
Noticed a significant reduction in dandruff
94%
94%
Noted a significant reduction in residue buildup on the scalp
98%
98%
Noticed an improvement in hair health and density
* This is no utopia. This is Korean engineering precision at the service of your hair.
FREQUENTLY ASKED QUESTIONS
Discover how Kosean can give you the thick, radiant hair you’ve always dreamed of—without the stress or endless waiting.
How long will it take before I stop finding hair in the shower drain?
Most users report a significant reduction in hair loss within the first 2–4 weeks of daily use.
Will this make my hair oily or greasy?
Absolutely not.
It is designed so you can apply it to dry hair in the morning and start your day with a fresh, clean look.
I’ve already tried hair growth products. Why is this one different?
Most products aim to treat individual hair strands. We target the root.
Our serum uses a special Korean activating complex to help restore scalp balance and support inactive follicles, especially in thinning areas like the hairline and part.
How often should I use it?
For optimal results, apply the serum directly to the scalp once or twice a day.
Consistent use helps make hair healthier and thicker over time.
Can I use it alongside other hair products?
Yes. You can easily incorporate it into your routine alongside your shampoo, conditioner, and styling products.
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Hair Growth Serum
£29.00