4.8/5 from 10.368 reviews
Korea's #1 Scalp Activation Serum
A water-light Korean scalp serum with a built-in brush that puts caffeine and heartleaf straight on the scalp, where hair actually grows. One minute a day. Never greasy
Shedding slows first.
Most people see a cleaner drain and a cleaner brush by week 4.
Baby hairs come next.
New growth along the hairline and part from around week 5.
No minoxidil, no dependency.
Stop whenever you like without the shed that follows quitting minox.
Nothing to wash out.
Water-light, absorbs in seconds, style straight over it.
WARNING: SELLING OUT FAST
This product sold out 11 times last year. We encourage you to take advantage of the end of summer sale and buy now.
93% SOLD
60-Days Money-Back Guarantee
Hair moves on its own clock, so we give you two full growth cycles to judge it. If the drain is not cleaner by day 60, we refund you.
Watch them use it:
Turn. Squeeze. Brush.
Sixty seconds, once a day. No rinsing, no second product, nothing to overhaul. Wet or dry hair, morning or night, whatever fits.
Turn.
One turn unlocks it and primes the tube for dispensing. It stays primed, so this is a first-use step more than a daily one.
Squeeze.
Press it on the skin where you want growth: hairline, part line, crown, any thinning patch. On the hair it does nothing.
Brush.
Massage with the built-in brush to spread it and boost circulation. No rinsing. Style straight over the top.
Turn.
One turn unlocks it and primes the tube for dispensing. It stays primed, so this is a first-use step more than a daily one.
Squeeze.
Press it on the skin where you want growth: hairline, part line, crown, any thinning patch. On the hair it does nothing.
Brush.
Massage with the built-in brush to spread it and boost circulation. No rinsing. Style straight over the top.
Visible Results in Weeks
Ninety days, honestly.
Hair grows on its own schedule, and no serum changes that. Here's what actually happens, and when.
Weeks 1-2
The scalp settles
Cleaner, less itchy scalp. The cooling hits the moment it lands. Caffeine starts waking tired follicles. Nothing visible yet, and nothing should be.
Weeks 3-4
Less shedding
Far less hair circling the drain, fewer strands on the brush. Roots feel more anchored. This is the first real signal, and most people hit it by week 4.
Weeks 5-7
New growth begins
Tiny baby hairs along the hairline. The part starts reading narrower. Hair feels thicker with more body, and other people notice before you do.
Week 8+
Fuller, healthier-looking hair
New growth filling in where you had given up. The ponytail feels heavier in your hand. Keep going and scalp health holds the result.
You were treating the wrong layer
Biotin. Rosemary oil. Thickening shampoos. If you're reading this, you've probably tried at least two.
You were treating the wrong layer
Biotin. Rosemary oil. Thickening shampoos. If you're reading this, you've probably tried at least two.
Oils sit on top
Heavy on the lengths, nowhere near the root and they ruin the style you spent time on.
Supplements go everywhere
Swallowed, diluted, distributed. Your scalp gets whatever's left over.
Shampoos rinse away
Ninety seconds of contact, then straight down the drain.
This goes where hair is made
The brush parts the hair and lays a water-light formula directly on the scalp. Sixty seconds, once a day.
Six scalps. Six timelines.
One serum.
Every pair is the same person, same phone, same bathroom light, weeks apart. The week is stamped on each photo. Drag the handle on any of them.
Part line, week 1 to week 12
Post-menopause grey, week 1 to week 12
Hairline, week 1 to week 7
Front section, week 1 to week 17
Blonde and fine, week 1 to week 12
Six actives, one destination
Everything in the formula is there to do one thing — make the scalp a place where hair can hold on.
Wakes the follicle
CaffeineBiotin
Caffeine supports circulation at the root, where the growth cycle is decided. Biotin helps maintain strong, healthy-looking strands.
Balances the scalp
NiacinamideHeartleaf Extract
Niacinamide supports the scalp barrier, while heartleaf — a Korean botanical — calms the dry, reactive scalp that makes hair look thin at the root.
Hydrates and strengthens
PanthenolGlycerin
Glycerin binds moisture to the scalp, while panthenol conditions the hair for softness, strength and the look of thickness.
Protects the follicle environment
Green Tea Extract
Camellia sinensis leaf extract is rich in antioxidants that help protect the scalp and support a healthy follicle environment.
Fragrance-free
Water-based formula
Every hair type, 1A–4C
60 seconds a day
Compared with everything elseyou've tried
Compared with everything elseyou've tried
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TSR
Original
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Others
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Applied directly to the scalp
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Non-greasy, style-safe
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Fragrance-free
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60 seconds a day
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Built-in brush applicator
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Guided 90-day plan with check-ins
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What we're not going to tell you
That you'll see results in fourteen days. You won't — and neither will anyone else, no matter what the ad said.
What we can tell you is what happens and when. We'll check in at day 14, day 30 and day 60, so you know whether this is working while your guarantee is still open.
If it isn't working by day sixty, email us and we refund you. That's the whole deal.
What customers say
The applicator is why I actually use it
After several weeks of consistent use my hair feels stronger, falls out less when I brush it and looks healthier. The built-in brush makes it very easy to get the product onto the scalp without wasting any.
Half of what used to come out in the brush
tried every hair vitamin. biotin in every dose. collagen powders. not one of them did anything measurable. this goes directly to the scalp which is where the problem actually is. seems obvious when you think about it. 6 weeks in and the difference is already visible
Five weeks before I was sure, but the drain does not lie
Postpartum hair loss is no joke. Lost so much after my second baby I was genuinely scared. Doctor said wait it out but 7 months later it wasnt getting better. Started this and by week 5 the shedding slowed down a lot. Now at week 10 i have little baby hairs at my temples!! so happy
Noticed a huge decrease in shedding after the first bottle
Already ordered more so I do not run out.
Sceptical of TikTok products, the ingredients checked out
I am usually super doubtful when it comes to TikTok hair products, but the heartleaf and caffeine combo seems to be working for me. Hair feels denser and I am not seeing nearly as much shedding in the shower.
My ponytail stopped getting thinner
The shedding slowed down first and the ponytail stopped shrinking after that. Month to month it is subtle, but scrolling back through my photos the difference is obvious.
Shower drain is clear, growth is slower
Eight weeks of using it every night. The shedding was the first thing to change and it changed a lot. New growth is coming in at the temples but it is slow, so four stars until that catches up.
Frequently Asked Questions
I've tried everything and nothing worked. Why would this be different?
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Most of what you've tried works on the strand — the part of your hair that's already dead. Biotin is swallowed and diluted. Rosemary oil sits on the lengths. Shampoo has ninety seconds of contact before it rinses away.
This is applied to the scalp with a brush, and stays there. It's not a better version of what you tried. It's a different layer.
If I stop using it, will my hair fall out?
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No. This is scalp care, not a medication — there's no rebound cycle when you stop.
Consistency gives you the best result, the same way it does with skincare. But stopping doesn't undo what you've built.
How long does it really take?
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Less shedding in one to three weeks. Baby hairs at four to eight. Visible density at two to three months.
If anyone tells you fourteen days, they're selling. That's why the plan is ninety days and the guarantee is sixty.
Will it make my hair greasy?
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No. It's a water-light formula, not an oil. It absorbs in seconds and leaves no residue, so you can apply it in the morning and go straight out.
Does it work with my hair type?
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Yes — 1A through 4C. It's applied to the scalp, not the hair shaft, so curl pattern and porosity don't change how it works.
Fragrance-free, so it's suitable for sensitive scalps, tight styles and thinning edges.
I'm postpartum. Is this for me?
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Yes, and it's one of the most common reasons people start.
Postpartum shedding is a backlog: oestrogen keeps hair in its growing phase during pregnancy, and when levels drop it all exits at once. The shedding is temporary, but regrowth often comes back finer — and a depleted scalp slows it down further. This is the window where support matters.
Safe while breastfeeding, but check with your doctor if you have any concern.
Can I use it on colour-treated hair?
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Yes. It's applied to the scalp, not the lengths, so it won't affect colour, keratin treatments or chemical processing.
Shipping, returns and the guarantee
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Ships within 24 hours from our warehouse. 3–5 business days in the EU, 5–8 to the US. Free shipping over €50.
60-day money-back guarantee: if it hasn't worked after sixty days of consistent use, email us with your order number and we'll refund you.
Your part line is keeping score
You get more back than hair. Less time lost in the mirror. Your hair down because you want it down — not to cover anything. The quiet relief of feeling like yourself again. Take your day-zero photo tonight. Start tomorrow.
START MY 90 DAYS
60-day guarantee
Free tracked shipping
Day 14, 30 and 60 check-ins included
Your part line is keeping score
You get more back than hair. Less time lost in the mirror. Your hair down because you want it down — not to cover anything. The quiet relief of feeling like yourself again. Take your day-zero photo tonight. Start tomorrow.
START MY 90 DAYS
60-day guarantee
Free tracked shipping
Day 14, 30 and 60 check-ins included
