For Flakes · Grease · Itch · Shedding
★★★★★ 4.9 average · 40,000+ scalps reset · 60-Night Black Shirt Guarantee
Kamiyu clears suffocated follicles, the hidden root cause behind flakes on your shoulders, grease by 4pm, an itch you keep finding, and hair that sheds a little more every year.
Lint roller in my desk. Lint roller in my car. Lint roller in the hall closet. If that is you, listen: the rinse water ran GREY the first night and I had washed my hair that same morning. The itch was gone by week two. Get the complete kit and throw the rollers away.
You Are Not Imagining It

Not dandruff shampoo failure. Dead skin and hardened oil, lifting off a scalp that has never been cleaned under the hair.1
A stripped scalp panics and pumps more oil. The more you wash, the faster it comes back.2

Buildup pressing on the follicle. You scratch it in meetings without noticing. Look under the fingernail.3

Follicles choked at the root grip the hair weakly. It lets go in the shower, a little more each season.4
The Part Nobody Told You
Three washes a week since you were fifteen. Do the math for your age. Thousands of washes.
Now count how many times anything actually cleaned your scalp. Not the hair. The skin underneath it.
Zero.
Here is the problem with that. Your scalp produces more oil than any other skin on your body.5 That oil mixes with dead skin, dry shampoo, styling product, and hard-water minerals. Shampoo glides over the top of it, cleans the strands, and rinses away.6
The layer underneath stays. It compresses. It hardens around each follicle like wax around a wick. Trichologists call it buildup. We call it the sebum plug.
And a plugged follicle is a suffocating follicle. The research is plain: when oil and residue block the follicle, hair grows in weaker, thinner, and quits earlier. Meanwhile every expensive drop you put on top of the plug stays on top of the plug.

This is exactly why the Japanese head spa exploded. It is a one-hour ritual with four steps: flush, scrub, knead, feed. It treats the scalp like skin, because it is skin. Los Angeles caught on, then London. Now the sessions run $150 and the waitlists run months.
The steps were never the secret. The access was.
Why Nothing Has Worked
Strips the surface, misses the plug, and dries the scalp until it doubles its oil in defense. The flakes come back with backup.
Good actives, wrong landing zone. On a plugged scalp your serum sits on the wax, not the wick. Fertilizer poured on pavement.
They scratch the surface and inflame the skin. A head spa therapist never scratches. They knead. Pressure, rotation, at the root, under water.
It genuinely works. Once. Then the plug rebuilds for four weeks while you wait for the next opening. $1,800 a year, if you keep it up.
The plug does not plateau. Follicles miniaturize under pressure. The good news cuts the other way too: cleared follicles recover. Which is why starting matters more than everything above.

The Women Who Solved This
TikTok spent the last year chasing "glass hair", the mirror shine that took over every feed. Millions of views, hundreds of tutorials, and under all of them, the same quiet instruction: it starts at the scalp.
Japanese women never needed the tutorial. In Japan the scalp has been treated as skin for generations, and the head spa is where that practice became an art. It is the treatment with waitlists growing from Tokyo to London to Los Angeles, where a single Tokyo session now runs up to ¥50,000. People do not book it for cleaner hair. They book it for what a cleared, kneaded scalp does to the whole head.
From kami, hair, and yu, the water of the bath. The hair bath. The Japanese practice of washing the scalp itself, not just the hair. Practiced in Tokyo salons for decades. Performed in American salons for $150 a session. Now performed in your shower.
Introducing
Every step of the $150 head spa, engineered for your shower. Ten minutes a night. Less than the price of one appointment, forever.
Sea-salt scrub dissolves years of buildup. Twice a week, two minutes.
The silicone brush lifts residue off the skin without a single scratch.
The Kamiyu device: 84 silicone fingers, counter-rotating like a therapist's hands.
Rosemary-peptide serum on clean skin, combed to the root. Absorbed, not stranded.

| KAMIYU | Dandruff shampoo | Growth serum | $150 head spa | |
|---|---|---|---|---|
| Clears the sebum plug | ✓ | ✗ | ✗ | ✓ |
| Works at the follicle, under water | ✓ | ✗ | ✗ | ✓ |
| Every night, at home | ✓ | ✓ | ✓ | ✗ |
| Breaks the oil-rebound cycle | ✓ | ✗ feeds it | ✗ | ✓ |
| Cost per year | $149 + $39 refills you control | $180+ | $720+ | $1,800 |
The $150 Lesson
I paid $150 for a head spa in Studio City and I want to be honest: it was incredible. Best my hair has felt in years. On the drive home I called my sister to describe the grey rinse water. Then the salon texted me the rebooking link. Six weeks out. $150. Every month. Forever.
I did the math at a red light on Ventura and felt genuinely stupid. The Kamiyu arrived that Friday. Night 30: my hair looks like I just left Studio City. Except now it looks like that every day. I never rebooked.
My wife bought this and I made fun of it for a week. Then I used it once and now we argue about whose turn it is. I don't know how to describe it except my head feels decompressed. Ordering a second one so we stop fighting.
My sister kept pushing her $150 head spa appointment on me and I could never justify it. Got this instead. Same grey water she showed me from her salon photo, in my own shower. My hairdresser asked what I changed at my last cut.
Summer Sale · Only 500 Kits Left at This Price
The salon habit costs $1,800 a year. This is $149. Once. Only 500 kits left at this sale price, then it returns to $237.
CHOOSE YOUR SCALP RESET · ONE-TIME · NOTHING RECURRING
The DeviceYOURS · $119
Deep-Clean BrushFREE
Sea-Salt Scrub🔒
Rosemary Serum🔒
Gua-Sha Comb🔒
Turban + Card🔒 A real deal on its own: the device with the deep-clean brush free, same 60-night guarantee. But $30 more opens every closed box: $99 in gifts.
The DeviceYOURS · $119
Deep-Clean BrushFREE
Sea-Salt ScrubFREE
Rosemary SerumFREE
Gua-Sha CombFREE
Turban + CardFREE You pay for the device. The full treatment comes free: $118 in gifts. Every box open, at your door in one kit.
The DeviceYOURS · $119
Deep-Clean BrushFREE
Sea-Salt ScrubFREE
Rosemary SerumFREE
Gua-Sha CombFREE
Turban + CardFREE Everything in The Japanese Scalp Reset. Twice. $236 in gifts free · $124.50 per head spa · free express shipping. Most couples end up here by week three anyway.
Do the math the salon hopes you won't
And the first grey rinse happens tonight.
ONLY 500 KITS LEFT AT THIS PRICE · THEN IT RETURNS TO $237
RESET MY SCALP · $149 →✓ 60-Night Black Shirt Guarantee · ✓ Free U.S. shipping · ✓ Ships within 48 hours
or 4 payments of $37.25 with Shop Pay
Sixty nights in your own shower. If the black shirt test fails, one email refunds every dollar.
Verified Reviews
★★★★★ 4.9 average from verified buyers · photos are theirs
The scrub water ran grey the first night. Grey. I sat on the edge of the tub and stared at it, because I have washed my hair every other day for thirty years. That photo is the proof. But night 14 is the part I did not expect: I caught myself checking my part in the elevator mirror. Not for flakes. Just to look.

My colorist stopped mid-foil, picked up a strand and asked what I switched to. I got to say a Japanese word she had never heard. This photo is day-two hair, zero product, right after school drop-off. Day two used to be bun-and-dry-shampoo day.

My barber said the word buildup and would not say much more. So I looked it up and ended up here. Ten minutes a night where my phone cannot reach me. Less on the pillow by week two. I checked. Checking is what I do.

My daughter gets married in October. I ordered this the night the engagement photos came back, because all I could see was the light hitting my scalp through my part. Night 21: my stylist found new baby hairs along the parting and asked what changed. I am wearing my hair down at the wedding.
Three minutes of kneading while my conditioner sits. The rest fits inside the shower I already take. I have a drawer of things I quit: the derma stamp, the rosemary drops, the scalp brush from TikTok. This one lives on the shower shelf, and apparently I am now the person who says “my ritual” out loud. My sister rolled her eyes. Then she borrowed it.

Counted the drain catch this morning out of habit. Then realized I had stopped counting weeks ago. Booked a haircut yesterday because I wanted one, not to hide anything. That is the whole review.
Four stars because shipping took nine days and nobody answered my email until day three. The device itself? Annoyingly good. The itch stopped in week one and my blowouts last two days longer. Ship faster and it is five.
Someone at work asked if I got a gloss treatment. A gloss treatment. I have not gotten one hair compliment in eleven years at that office. It was a Tuesday. I wrote it in my notes app.
My sister made me try hers while I was visiting. I ordered mine from her guest bathroom before my hair was even dry. You know within one use. That sounds dramatic. It is not.
A stranger on the train asked what I use in my hair. A stranger. On the train. I heard myself say “it’s a Japanese thing” like a woman who has her life together. My friend took this photo because she did not believe me about the shine.

Our anniversary dinner. My husband took one picture of me from across the table and sent it to me with three fire emojis. Fourteen years. He has never once photographed my hair. I wore it down and I did not think about it one time all night.

I cancelled my standing blowout appointment. Not to save the money, although that is $260 a month back. My own hair does the thing now. My neighbor took this and I made it my new everything photo.

Run the ritual for 60 nights. Then wear the black shirt you stopped wearing and look at your shoulders. If you do not love what you see, and what you stopped seeing, send it all back. Every cent returned. No forms. No fights. Sixty nights counted from the day yours arrives. One email to hello@kamiyu.co does it.
Start Tonight · $149For anyone on the fence about the guarantee, I actually tested it. Emailed on night 40 because I wasn't sure the shedding had slowed. They told me to finish the 60 nights and refund me either way if I wanted. I kept it. Drain catch says it's working.
Questions
The first flush shows you immediately: the rinse water tells the story. Itch and grease usually calm within the first two weeks. Shedding is a slower system, give it the full 60 nights, which is exactly what the guarantee covers.
Yes. The ritual treats the scalp, not the strands. The scrub stays at the root and rinses clean. Nothing in the system strips color.
Yes, and you should. A cleared scalp is the whole point: your actives finally land on skin instead of buildup. Apply yours where you would apply ours.
The device's fingers work at the scalp, under the hair, and the ritual was built shower-wet. For protective styles, use the scrub and serum on exposed partings and the device at wash days.
IPX7. It lives in the shower. Rinse it under the tap when you rinse yourself.
About 8 weeks at the full ritual. The refill duo (scrub + serum) is $39, and it ships only when you order it. Nothing auto-ships, nothing renews. The device never needs replacing.
Then it costs you nothing. 60 nights, full refund, we pay return shipping. The black shirt decides, not us.