Get the Night Kit

Bladronix / All products / The Night Cap, Triple Layer

The black Triple Layer Night Cap: satin outside, soft terry lining inside.A man in bed at night wearing the black Triple Layer Night CapA man asleep in bed wearing the black Triple Layer Night Cap, his cat asleep in his armWithout the cap, the cat licks the man's hair on the pillow. With the cap, the same cat sleeps beside him.ASPCA: "Toxicity has been seen in cats that simply lay on pillows with minoxidil residue and then groom themselves." JAAHA 2021: of 62 cats that got sick, 8 died.The black Triple Layer Night Cap on a bedside table at night.The black Triple Layer Night Cap on linen bedding in morning light.A man pulling the navy floral Triple Layer Night Cap on before bedThe navy floral Triple Layer Night Cap: satin outside, soft terry lining inside.A woman reading in bed wearing the navy floral Triple Layer Night CapThe three layers: satin outer, waterproof EVA middle, terry liningThe three layers of the black Triple Layer Night Cap: satin outer, EVA middle, absorbent inner lining.The black Triple Layer Night Cap: about 32 cm across, 13 cm tall, with a 15 cm elastic opening that stretches to fit.Cross-section of the three layersThe four-step night routineWhere minoxidil residue travels at night

The sleep cap made for minoxidil

The Night Cap, Triple Layer

Three layers made for minoxidil, between tonight's dose and your pillow. Satin on the outside so it glides on the pillowcase, a waterproof EVA core so nothing passes through, and a terry lining that holds what flakes off until wash day.

  • Less residue where your cat sleeps and grooms
  • Wake up to a clean pillow, not last night's dose
  • Nothing rubs off on your partner or your kid
  • Your silk bonnet soaks it up. This one doesn't.
Color
Pack

Mixing colors? Add each one to your cart. The pack price counts every cap, whatever the color.

Quantity

Secure checkout SSL encrypted Shopify Payments

American Express Apple Pay BancontactDiners ClubDiscoverGoogle Pay Mastercard PayPalShop Pay Visa

Free shipping on all orders. 30-day returns.

Minoxidil usersWhat people who use minoxidil write about it

If you have a dog or cat, this can kill them. Minoxidil is extremely toxic to pets, even just a small drop can make them sick.
Minoxidil user, 2025
You have to wait some time for it to dry a bit on your scalp, if not, all is going to stay in your pillow.
Minoxidil user, 2014
My cat started exhibiting weird behavior shortly after use and I came to learn that Minoxidil is toxic to pets.
Minoxidil user, 2025
Leaves my scalp greasy and makes my head itch so I end up with the goop all over my hands and everything else I touch, too.
Minoxidil user, 2022
This can run down your scalp, get onto clothing and is changing the color of our pillow cases.
Minoxidil user, 2019
Sooo greasy. Had to wear a hat the whole time until I washed my hair.
Minoxidil user, 2018
One month of use and dramatic results. It's so greasy though I only use it at night.
Minoxidil user, 2020
As it leaves a greasy coating on my hair, I can use it at night and wash out in the morning.
Minoxidil user, 2022
Do not use if you have cats. It is extremely toxic to them.
Minoxidil user, 2020
As soon as my hubby forgets to use it, he finds lots of hairs on the pillow.
Minoxidil user, 2013
If you have a dog or cat, this can kill them. Minoxidil is extremely toxic to pets, even just a small drop can make them sick.
Minoxidil user, 2025
You have to wait some time for it to dry a bit on your scalp, if not, all is going to stay in your pillow.
Minoxidil user, 2014
My cat started exhibiting weird behavior shortly after use and I came to learn that Minoxidil is toxic to pets.
Minoxidil user, 2025
Leaves my scalp greasy and makes my head itch so I end up with the goop all over my hands and everything else I touch, too.
Minoxidil user, 2022
This can run down your scalp, get onto clothing and is changing the color of our pillow cases.
Minoxidil user, 2019
Sooo greasy. Had to wear a hat the whole time until I washed my hair.
Minoxidil user, 2018
One month of use and dramatic results. It's so greasy though I only use it at night.
Minoxidil user, 2020
As it leaves a greasy coating on my hair, I can use it at night and wash out in the morning.
Minoxidil user, 2022
Do not use if you have cats. It is extremely toxic to them.
Minoxidil user, 2020
As soon as my hubby forgets to use it, he finds lots of hairs on the pillow.
Minoxidil user, 2013
If you have a dog or cat, this can kill them. Minoxidil is extremely toxic to pets, even just a small drop can make them sick.
Minoxidil user, 2025
You have to wait some time for it to dry a bit on your scalp, if not, all is going to stay in your pillow.
Minoxidil user, 2014
My cat started exhibiting weird behavior shortly after use and I came to learn that Minoxidil is toxic to pets.
Minoxidil user, 2025
Leaves my scalp greasy and makes my head itch so I end up with the goop all over my hands and everything else I touch, too.
Minoxidil user, 2022
This can run down your scalp, get onto clothing and is changing the color of our pillow cases.
Minoxidil user, 2019
Sooo greasy. Had to wear a hat the whole time until I washed my hair.
Minoxidil user, 2018
One month of use and dramatic results. It's so greasy though I only use it at night.
Minoxidil user, 2020
As it leaves a greasy coating on my hair, I can use it at night and wash out in the morning.
Minoxidil user, 2022
Do not use if you have cats. It is extremely toxic to them.
Minoxidil user, 2020
As soon as my hubby forgets to use it, he finds lots of hairs on the pillow.
Minoxidil user, 2013
  • 30-day returns
  • Free shipping on all orders. Orders ship within 2 business days. Delivery usually takes 4 to 15 days.

One rule: the cap goes on dry hair only. At least 2 hours after liquid. After foam, once it is completely dry.

We don't sell minoxidil, and we never will. The Night Cap is an accessory for people who already use it. Your treatment, dose and advice come from your doctor or pharmacist, not from us.

Kit usersWhat kit users say

I was thinking about quitting minoxidil because my cat sleeps on my pillow. Thanks to the waterproof barrier of this cap, not a single drop leaks onto the pillow. I put it in its protective pouch in the morning, and I feel completely at ease.
Sarah M.
With the comb applicator, the liquid reaches the scalp without running down my forehead, and thanks to the gloves, I can pet my cat without the paranoia of having to wash my hands. I was just looking for a cap, but I found a great kit that solved all my application problems.
David K.
Regular silk bonnets were leaking, but the special design of this cap completely solved the yellow stain problem on my pillows. Zero leakage when you put it on after your hair dries. It doesn't squeeze your head at all during the night.
Emily R.
My wife was really complaining about the yellow minoxidil stains on our pillowcases, and regular silk bonnets leaked the lotion. The design of this cap is truly different. It doesn't feel tight on your head all night and doesn't leak. The only rule is that your hair must be completely dry; if you pay attention to that, there are zero issues. I knocked off 1 star just because there could be a few more color options.
Michael B.
Honestly, the idea of sleeping with a night cap seemed a bit weird at first, but I have 2 cats and didn't want to take any risks. I chose the Black Microfiber one; it's very comfortable, has a loose fit, and doesn't make you sweat. It's still on my head when I wake up in the morning. Also, buying the pieces separately would cost around $120, so getting the kit is a much smarter investment.
Jason T.
For years, I was tired of the cycle: 'apply the drug, wait for it to dry, twist into weird sleeping positions so it doesn't rub off on the pillow.' This kit streamlined the whole process. I apply it cleanly with the bottle, track my shedding with the lens, and once it's dry, I put the cap on and go to sleep. Especially if you share a bed with a partner or have a child, this is an absolute must-have product to prevent the medication from rubbing off on them.
Jessica W.
I was thinking about quitting minoxidil because my cat sleeps on my pillow. Thanks to the waterproof barrier of this cap, not a single drop leaks onto the pillow. I put it in its protective pouch in the morning, and I feel completely at ease.
Sarah M.
With the comb applicator, the liquid reaches the scalp without running down my forehead, and thanks to the gloves, I can pet my cat without the paranoia of having to wash my hands. I was just looking for a cap, but I found a great kit that solved all my application problems.
David K.
Regular silk bonnets were leaking, but the special design of this cap completely solved the yellow stain problem on my pillows. Zero leakage when you put it on after your hair dries. It doesn't squeeze your head at all during the night.
Emily R.
My wife was really complaining about the yellow minoxidil stains on our pillowcases, and regular silk bonnets leaked the lotion. The design of this cap is truly different. It doesn't feel tight on your head all night and doesn't leak. The only rule is that your hair must be completely dry; if you pay attention to that, there are zero issues. I knocked off 1 star just because there could be a few more color options.
Michael B.
Honestly, the idea of sleeping with a night cap seemed a bit weird at first, but I have 2 cats and didn't want to take any risks. I chose the Black Microfiber one; it's very comfortable, has a loose fit, and doesn't make you sweat. It's still on my head when I wake up in the morning. Also, buying the pieces separately would cost around $120, so getting the kit is a much smarter investment.
Jason T.
For years, I was tired of the cycle: 'apply the drug, wait for it to dry, twist into weird sleeping positions so it doesn't rub off on the pillow.' This kit streamlined the whole process. I apply it cleanly with the bottle, track my shedding with the lens, and once it's dry, I put the cap on and go to sleep. Especially if you share a bed with a partner or have a child, this is an absolute must-have product to prevent the medication from rubbing off on them.
Jessica W.
I was thinking about quitting minoxidil because my cat sleeps on my pillow. Thanks to the waterproof barrier of this cap, not a single drop leaks onto the pillow. I put it in its protective pouch in the morning, and I feel completely at ease.
Sarah M.
With the comb applicator, the liquid reaches the scalp without running down my forehead, and thanks to the gloves, I can pet my cat without the paranoia of having to wash my hands. I was just looking for a cap, but I found a great kit that solved all my application problems.
David K.
Regular silk bonnets were leaking, but the special design of this cap completely solved the yellow stain problem on my pillows. Zero leakage when you put it on after your hair dries. It doesn't squeeze your head at all during the night.
Emily R.
My wife was really complaining about the yellow minoxidil stains on our pillowcases, and regular silk bonnets leaked the lotion. The design of this cap is truly different. It doesn't feel tight on your head all night and doesn't leak. The only rule is that your hair must be completely dry; if you pay attention to that, there are zero issues. I knocked off 1 star just because there could be a few more color options.
Michael B.
Honestly, the idea of sleeping with a night cap seemed a bit weird at first, but I have 2 cats and didn't want to take any risks. I chose the Black Microfiber one; it's very comfortable, has a loose fit, and doesn't make you sweat. It's still on my head when I wake up in the morning. Also, buying the pieces separately would cost around $120, so getting the kit is a much smarter investment.
Jason T.
For years, I was tired of the cycle: 'apply the drug, wait for it to dry, twist into weird sleeping positions so it doesn't rub off on the pillow.' This kit streamlined the whole process. I apply it cleanly with the bottle, track my shedding with the lens, and once it's dry, I put the cap on and go to sleep. Especially if you share a bed with a partner or have a child, this is an absolute must-have product to prevent the medication from rubbing off on them.
Jessica W.
  • Keeps residue off your pillowA waterproof core sits between your hair and the fabric your face, your partner and your cat all end up on.
  • Loose by designA deep dome with an air gap above your scalp. It covers your hair, it does not seal your skin.
  • Made for hours, not minutesCut and lined to be worn for a full night, not a five minute shower.
  • Washes cleanThe lining holds the residue. Your washing machine gets rid of it once a week.
A cat asleep on its owner's pillow at night

The sleep cap made for minoxidil

Your minoxidil doesn't stay on your head.

It dries into your hair, rubs off on your pillow, and ends up on whoever shares it. Your partner. Your kid. Your cat. The Night Cap keeps tonight's dose where you put it.

  • Made for minoxidil
  • Loose fit, never tight
  • Washable and reusable

She isn't sleeping on a pillow. She's sleeping on last night's dose.

A cat licking a sleeping man's hair on his pillow, then settling down against his head
Dramatization. Generated scene, not a real pet or patient.

What happens tonight

Your cat doesn't know what's in your hair.

  • 2 to 4 hoursHow long minoxidil makers tell you to let it dry before bed. Most people apply it right before.2
  • 12.9%of cats that showed symptoms in a review of 211 poison-control cases died. Some had licked an owner's pillowcase.1
  • 0 touchesYour cat doesn't need to touch the bottle, or you. The ASPCA has seen toxicity in cats that lay on pillows with residue and then groomed.6

What people try

Three ways people handle it. Two don't work, one costs you your hair.

  • Apply earlier and hopeIt works on the nights you remember. Most nights it's 11pm, you're tired, and it goes on right before bed anyway.
  • Change the pillowcase every dayYour cat grooms long before laundry day. And the residue is still in your hair, on your hands and on your face.
  • Quit minoxidilPeople do. Then months of regrowth shed away. One Amazon reviewer's whole verdict: “Do not use if you have cats.”

Or keep the treatment and block the route.

Show me the options

In their words

What minoxidil users write about their pillows

“…it goes on very greasy and it will stain hats and pillows.”
Minoxidil user on Amazon, 2023
“This can run down your scalp, get onto clothing and is changing the color of our pillow cases.”
Minoxidil user on Amazon, 2019
“My cat started exhibiting weird behavior shortly after use and I came to learn that Minoxidil is toxic to pets.”
Minoxidil user on Amazon, 2025
“…you can't put the liquid on right before bed, unless you want marks on your pillow case.”
Minoxidil user on Amazon, 2021

How it's made

3 layers, one job

Three layers made for minoxidil, between tonight's dose and your pillow. Satin on the outside so it glides on the pillowcase, a waterproof EVA core so nothing passes through, and a terry lining that holds what flakes off until wash day.

AIR GAP Satin outerglides on the pillow Waterproof coreresidue stops here Soft liningholds what sheds Elastic band YOUR PILLOW. NOTHING REACHES IT.
Outer

Satin

Smooth against your pillowcase, so the cap moves with you when you turn over.

Core

Waterproof EVA

The barrier. Dried residue and night sweat stop here instead of soaking through to the pillow.

Lining

Terry cloth

Soft on your hair. Catches what sheds overnight so it leaves in the wash, not on your bedding.

The night routine

Four steps. Three of them are free.

The cap is step four. Steps one to three cost nothing, and you should do them even if you never buy anything from us.

1Free

Apply after dinner, not at bedtime

Tie it to a habit instead of a clock. Moving your application earlier is the single biggest fix on this page.

2Free

Wait until it's fully dry

At least 2 hours for liquid, 4 is better. For foam, wait until it is completely dry. Dryness check: touch the back of your hand to your scalp. If it feels cool or tacky, it isn't dry yet.

3Free

Wash your hands with soap

Residue on your hands ends up on everything you touch next. That includes your pet.

4The cap

Cap on. Lights out.

The Night Cap is made for minoxidil: it sits loosely over dry hair and puts a barrier layer between your hair and your pillow. Take it off in the morning. Wash it once a week.

  • Never on wet hair
  • Never all day
  • Never pulled tight

Details

Specs

Layers3
OuterSatin
BarrierWaterproof EVA
LiningTerry cloth
FitOne size, about 32 cm across, elastic band
ColorsBlack, Navy Floral
CareWash weekly, air dry

Questions

Before you buy

Will covering my hair make minoxidil less effective?

Not if you wait until it's dry. Most absorption happens in the first few hours after you apply it, and the cap goes on after that. If anything the routine helps: product that rubs off on a pillow isn't doing anything for your hair.

Is it safe to cover my scalp overnight?

The documented problems come from tight, near-constant covering over wet product. The Night Cap is the opposite: a loose dome, over dry hair, for the night only. If you have a scalp condition or wear a wig or tight hat during the day, ask your doctor first.

Does it guarantee my pet is safe?

No, and be suspicious of anyone who says their product does. The cap reduces one contact route, the pillow. Pets are also exposed through your hands, your skin, spills and the bottle itself. Wash your hands, store the bottle out of reach, and if you think your pet has had contact, call your vet or ASPCA Poison Control (888-426-4435) right away. Don't wait for symptoms.

Should I switch to oral minoxidil because of my cat?

Not for that reason alone. Oral minoxidil is a good option for many people, but it isn't right for everyone. Its most common side effect is unwanted hair on the face and body, reported in 15.1% of cases in a study of 1,404 patients. If you already deal with unwanted hair, for example with PCOS, that matters. If the topical works for you, the pet risk is something you can manage with your routine: apply early, let it dry, wash your hands, cap on. Which form you use is a decision for you and your doctor.

I already sleep in a silk bonnet. Isn't that enough?

Silk and satin are great for your hair, but they aren't waterproof. Residue soaks into the fabric, and the bonnet ends up on your pillow, your nightstand or under your cat. The Night Cap keeps satin on the outside, so you keep the glide, and adds a waterproof layer in the middle. Whatever you wear, put it on dry hair only.

Will it stay on all night?

It's cut deep, with an elastic band that sits at the hairline, and it's designed to stay on when you turn over.

I'm a guy. Is this for me?

Most minoxidil users are. The cap is unisex and cut extra large, so it fits long and thick hair too. It comes in plain black or navy floral.

How do I wash it?

At least once a week, with your normal detergent, then let it air dry. Wash it separately from pet bedding.

What about shipping and returns?

Free shipping on all orders. Orders ship within 2 business days. Delivery usually takes 4 to 15 days. Unused items in their original packaging can be returned within 30 days of delivery. A cap is worn on your head, so for hygiene reasons we can't take back caps or opened gloves and stickers once they've been used. Full details are in our Refund Policy.

Tonight's dose is going somewhere. Decide where.

Keep the treatment. Keep it off your pillow, your face and your cat.

Get the Night Cap 30-day returns
The Night Cap, Triple Layer$19.99 USD