For Flakes · Grease · Itch · Shedding
★★★★★ 4.9 average · 1,213 verified reviews · 60-Night Black Shirt Guarantee
Flakes on the black shirt by lunch. Roots greasy again by 4pm on a wash day. The itch you scratch in meetings. A little more hair in the drain every year. Four problems, one cause: a layer of hardened oil and dead skin over the follicles that shampoo has never reached. Kamiyu is the first thing that washes it.
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 whole box and throw the rollers away.
Watch what your fingers actually do
Your fingers wash hair. The skin underneath, where the oil hardens around each follicle, never gets touched. The dome puts the same shampoo where your hands cannot reach, then warms it, kneads it and runs red light at the root.
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Seen In Real Showers
Real customers, real bathrooms, the first nights with the dome. Tap a video for sound.
You Are Not Imagining It
Three washes a week since you were fifteen is 3,900 washes, and not one of them cleaned your scalp. Four symptoms, one root cause: the sebum plug. What feels like a dry scalp is usually the plug too.
One honest line on shedding. Buildup at the root is one reason hair lets go early; Kamiyu clears it. Hormones, postpartum, thyroid and heredity are others, and those belong with a dermatologist.
RESET MY SCALP · FROM $89 →Why Nothing Has Worked
Dandruff shampooStrips the surface, misses the plug, and dries the scalp until it doubles its oil in defense.
Growth serumsGood actives, wrong landing zone. On a plugged scalp your serum sits on the wax, not the wick. Fertilizer poured on pavement. Keep the bottle. It was never the problem. The surface it landed on was.
Fingernails + plastic brushesThey scratch the surface and inflame the skin. A head spa therapist never scratches. They knead.
The $150 salonIt genuinely works. Once. The plug rebuilds inside two weeks, and the front desk knows it: they book your next visit before you reach the door. $3,900 a year, if you keep going back.
Every one of these is still in the cupboard. Not one of them ever reached the skin.
Introducing
The Japanese Scalp Reset: every tool of the $150 head spa, rebuilt to run inside the shampoo you already take. The first scalp wash of your life happens on your next wash day.
84 kneading nodesa therapist's fingers, counter-rotating
Onsen warmthsoftens the plug first
Red light 630-680nmthe band hair-density trials use, at the root, under running water
IPX7 waterprooflives in the shower
USB-C, cordlessone charge, weeks of washes
5 to 10 minutes a washinside the shampoo you already do
Kneads, never scrapes · bath-warm, never hot · safe on fine and thinning hair · colour-safe
Five to ten minutes, on your wash days. Three moves.
No. Kamiyu runs inside the washes you already do, two or three a week. The dome does the scalp on those nights; the Wash keeps the follicle open between them.
The Second Half
Regular shampoo is built for hair. It leaves a film on the scalp, and that film is what the plug rebuilds on. The Follicle Wash is built for the skin. It keeps the follicle open once the Dome has cleared it. It goes on the scalp only, through the applicator, so one bottle lasts about eight weeks. Condition your lengths as you always do.
In The Box
Every plan: Dome, comb, applicator, spare heads. The Resets add the first Follicle Wash, the guide and the 1-year warranty: up to $111 in gifts.
Bought this for my own flakes, and my husband made fun of it for a week. Then he used it once and now we argue about whose turn it is. I do not know how to describe it except my head feels decompressed after. Ordering the second dome so we stop fighting.
Kami, hair. Yu, bath. The Japanese practice of washing the scalp itself, not just the hair. Tokyo salons have done it for decades. American salons charge $150 a session for it. Now it runs in your shower.
Before You Choose
Dana K.Columbus, OH · Verified buyerI photographed my part every Sunday for my dermatologist. These are three Sundays apart, same bathroom, same light.
WEEK 0WEEK 3
Simone R.Hoboken, NJ · Verified buyerMy roots used to be finished by two in the afternoon. I still wash the same amount. It just stopped coming back so fast, and the part stopped showing pink.
WEEK 0WEEK 6
Priya S.San Jose, CA · Verified buyerNothing else changed, not the shampoo, not how often I wash. The catch looked like the left every morning.
WEEK 0WEEK 4
Rachel M.Austin, TX · Verified buyerShe parted it under her light and asked what I was using. Nothing new, except this.
WEEK 6| KAMIYU | Dandruff shampoo | Growth serum | $150 head spa | |
|---|---|---|---|---|
| Clears the sebum plug | ✓ | ✗ | ✗ | ✓ |
| Works at the follicle, under running water | ✓ | ✗ | ✗ | ✓ |
| Every wash, at home | ✓ | ✓ | ✓ | ✗ |
| Breaks the oil-rebound cycle | ✓ | ✗ feeds it | ✗ | ✓ |
| Cost, year one | $139, one time | $180+ | $720+ | $3,900 |
Year two, the dome is already yours. Refill the Wash only if you want to.
Choose your Scalp Reset
Every plan ships the Dome. The 3-Month and 6-Month Reset add the Follicle Wash, the guide and the 1-year warranty.
DomeYours
6 Wash1 free + 5
HeadsFREE 
CombFREE 
ApplicatorFREE 
GuideFREE 
WarrantyIncluded
DomeYours3 Wash1 free + 2HeadsFREE CombFREE ApplicatorFREE GuideFREE WarrantyIncluded
DomeYoursCombFREE ApplicatorFREE HeadsFREE Your first rinse runs grey. That is the buildup leaving.
Nothing renews. The Dome works with any shampoo. More Follicle Wash when you want it: two bottles, $39.
✓ 60-Night Black Shirt Guarantee · ✓ 1-Year Device Warranty · ✓ Ships within 48 hours
His & Hers · two DomesEvery gift doubled, one order.$199 →
Answers, before you decide
Everything people ask before they add it to the cart.
Three things working at once, which is what makes it a treatment and not a wash: 84 counter-rotating nodes that knead the way a therapist kneads, onsen warmth that softens hardened buildup so it lifts instead of smearing, and 630-680nm red light delivered at the scalp itself. That is the $150 session, minus the chair.
Red light between 630 and 680 nm is the band randomised trials used to increase hair density against a sham device (reference 4 below). In the dome it runs for the whole knead, delivered at the scalp under running water, so the follicles the nodes have just cleared get the light directly instead of through hair from a helmet. It is not a laser. It is safe on skin and eyes.
Yes. That is the point. Anti-dandruff shampoo only works if it reaches scalp skin, and it usually rinses off in seconds. Lather, then knead it in with Kamiyu. Zinc, ketoconazole, salicylic acid: whatever your shampoo uses, it finally gets contact time.
Flakes, grease by 4pm, the itch, more hair in the drain: they look like four problems but they start in the same place, the buildup at the root. That is the surface Kamiyu clears, whichever mix of the four you have. One honest exception: if you have psoriasis, eczema, open sores, or you are under a dermatologist's care for a scalp condition, check with them first. We would rather lose the sale than pretend otherwise. If your shedding is sudden or patchy, see a dermatologist first and bring the photos of your part.
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.
Three steps, on the wash days you already have. Comb it through dry to open a path. Fill the applicator and press the shampoo onto your scalp, not your hair. Then five to ten minutes with the dome and rinse. The only new thing is where the shampoo goes.
IPX7. It lives in the shower, under running water. Rinse it under the tap when you rinse yourself. Do not leave it soaking in the bath. It charges by USB-C between sessions.
Yes. The system treats the scalp, not the strands. The shampoo goes on at the root and rinses clean. Nothing in the system strips color.
The nodes knead at the skin and do not pull; on thinning hair they loosen what is holding the hair back. The Wash is silicone-free, so condition your lengths as you always do. Nothing in the system strips color. The device's fingers work at the scalp, under the hair, and the method was built shower-wet. For protective styles, use the applicator along exposed partings and the dome on wash days.
The Dome will work whatever shampoo you own into the scalp, so your next wash is covered either way. But regular shampoo is built for hair: it coats the lengths and leaves the film that hardens back into the plug. The Follicle Wash is built for the skin, so it keeps the follicle open once the Dome has cleared it. That is why every plan ships with it, and why the 3 and 6 month plans carry the supply.
Because you almost certainly already own one, and it was never the problem. The surface it landed on was. Kamiyu is the tool set that clears that surface. Put your minoxidil, your rosemary oil, your $60 peptide serum on a cleared scalp and it reaches skin instead of buildup.
Sixty nights is how long it takes to clear a plug that took years to build. Run the reset for 60 nights, counted from the day yours arrives. Then wear the black shirt you stopped wearing and look at your shoulders. If you do not love what you see, one email to hello@trykamiyu.com refunds every cent, and we pay the return shipping. No forms. No fights. Less than 1% of our customers have ever asked.
Free shipping on every kit, $5.95 on the Dome alone. Out of Cheyenne, Wyoming within 48 hours, tracked, at your door in 5 to 8 business days. Returns are the guarantee: 60 nights, full refund, we pay the return label. A real person answers hello@trykamiyu.com inside one business day.
Why Kamiyu Exists
For twelve years in Japan I washed scalps for a living, and scanned every one onto a screen first. For most people it was the first time they had ever seen their own scalp. The work worked. Four weeks later they were back with the same scalp, because the hour never survived the drive home.
Kamiyu is that hour, rebuilt for your shower. Photograph your part on day one, so this time the after picture is yours.
Verified Reviews
Diane H.US · 1 review
I threw out three dark tops last year because I was tired of checking my shoulders in the car mirror. Week four with this thing: I bought a black cardigan on purpose. At my age you do not expect a shower gadget to win an argument your dermatologist lost.
Date of experience: August 5, 2026
Sandra P.US · 2 reviews
I almost filmed it for my group chat. Three weeks in, my part does not itch at 3pm anymore and the little brush I carried in my purse for emergencies stays home. I did not tell anyone what changed. They keep asking anyway.
Date of experience: July 30, 2026
Brianna L.US · 6 reviews
Charge it on the counter, not in the caddy, and you will be fine. Everything else is honestly annoying how well it works. The itch was gone by night six and my blowouts last two days longer. Fix the cable and I will change this.
Date of experience: August 6, 2026
The rinse 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.
Priya S. · night 1✓ Verified
Nine years on the same medicated shampoo and I did not give it up. Same bottle, same routine; it just lands on the skin now. The itch went first, around night nine. The flakes took until week four.
Bridget A. · night 31✓ Verified
I have hair past my waist and it is thick. You part it into four sections and work one at a time. It reaches. That was the whole worry and it is gone.
Marisol D. · night 29✓ Verified
Sixty nights from the day it arrives. If the black shirt is not clean, send it all back for every cent. No forms. No fights. One email does it.
Less than 1% of our customers have ever asked.
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For 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.