Will red light therapy work for your hair?
Answer a few simple questions to see if our device is the right fit for your hair.
No email required · 30 seconds
Crown thinningReceding hairlineI have been using this incredible red light therapy cap for over a year and the results are amazing. I get so many comments on how thick my hair is. Its so easy to use, just 15 minutes a day. My hair has never looked better! I highly recommend this cap to anyone with hair loss issues. — Aaron
I'm genuinely impressed with the results so far. I've definitely noticed my hair feeling thicker and denser over time. My partner has even started using it too. — Stuart
I have seen positive results since using it, my hair is looking more dense and my scalp is not as visible under bright light. — Callum S.
My hair had been thinning, and after using it consistently for three months, I'm genuinely seeing improvement. My hair feels healthier and looks fuller. — Anna Cohen
Great product, my hairline is holding strong and firm. Hair on my crown is thickening as well, very happy with the results. — Ben
I was worried about the amount of cheap knock off type units on the market but this definitely isn't one of those. Excellent quality. — Steven Loftus
I've been using my Red Light Innovation Cap for 18 months now, and I'm delighted with it. I've noticed my hair looks healthier and thicker, and it's become part of my daily routine. — John Rose
After approximately 3 months of daily use, my hair looks much fuller on the sides and back of my scalp and hair loss on top appears to have stopped. — Dom Golio
The redlight cap has already started to work hair is starting to grow on my head thankyou. — Samuel Scholey
This product works, I have bought a second red/blue light RedLight Innovation hat for another family member and another is planning to buy one. We bought our first hat in November 2025 and can testify to its effectiveness, prompting a further purchase and recommendations. We particularly like the dual (red/blue) light facility and its effectiveness. I made contact with the Company on Saturday for some advice - not expecting a reply until Monday, I was surprised by the prompt reply on the same day with detailed technical advice and support. I cannot recommend this Company and its products highly enough — Steve Linton
A number out of 100, in thirty seconds.
Your Hair Response Score. How likely your hair is to respond to our device, based on your stage, your timeline and your history.
70 and above and the device is worth your money. Under 70 and we tell you straight that it isn’t for you. That policy is why our reviews look the way they do.
30 SECONDS · NO EMAIL FOR THE SCORE
THE MOMENTS
Eventually, you start noticing the difference.
The barber's
mirror
He held it up behind you.
You looked longer than usual.
He asked if it looked alright and you said yes before you'd really looked.
When he took the mirror away you found the back of your head again in the big mirror in front of you, and you held it there while he talked about the weekend.
In the car you told yourself it was just how short he'd cut it.
After the
shower
Your hair was still wet.
You could see more than you wanted to.
You saw it before you'd even reached for the towel.
You stepped back from the mirror because you thought maybe you were standing too close.
Then you dried it and checked the same spot again, and told yourself it always looks different when it's wet.
Someone else's
photo
You weren't looking for it.
Then you saw the back of your head.
You saw it in the group chat and didn't say anything.
You saved it, and later you opened it next to a photo from a couple of years ago, without really knowing what you were looking for.
You put the phone down, then picked it back up a few minutes later.
Noticing isn't the bad news.
It means you’ve seen the change. Now you can do something about it.
The question is where the treatment works.
MinoxidilIt brings more blood to your scalp. But the follicle still has to do the work. That is the part that stopped.
PrescriptionsIt stops the hormone that shrinks hair. It does not fix a follicle that has already got weak.
Shampoos and serumsIt sits on your scalp for a minute, then washes off. The follicle is under the skin.
SupplementsIt fills gaps in your diet. That only helps if a gap was the problem.
None of them put energy back into the follicle itself.
They work around the problem. Changing hormones, improving blood flow, adding nutrients, or treating the scalp.
But the follicle is where the hair is actually produced. That is the part that needs to be supported.
Nothing on it is built to finish.
It grows while you pay. You stop, and it goes back. That is not a side effect. It is the product.
Because their goal was never for you to finish. It was to keep you using a treatment that maintains the result for as long as you keep taking it.
A subscription that cured you would cancel itself.
The outcome was set before you chose.
It is easy to look back and think you should have acted sooner, or chosen better.
But acting sooner meant starting with the same three options. Choosing better meant choosing between three options that all leave the same thing untouched.
So the answer was never to choose sooner or choose better. It is to choose something aimed at the cause.
It starts where the others stop.
Your hair doesn’t start on the surface. It starts inside the follicle — the structure beneath your scalp that produces each strand.
Red light takes a different approach. Specific wavelengths penetrate the scalp and reach the area around the follicle, where the light energy is absorbed by cells.
The goal is to support the follicle where your hair is made.
WHAT HAIR RUNS ON
The Follicle's Battery
A thinning follicle has not simply gone away. Its cells are still working. But with less energy available, the hairs they produce can become smaller and finer.
But can enough light reach the follicle, at the depth where it matters?
THE ANSWER
Give your follicles what the shelf never could.
The RedLight Hat Pro. 125 TripleWave diodes in a hat, worn for 15 minutes a day.
The RedLight Hat Pro. From the outside, it looks like an ordinary hat. Inside, it’s designed to deliver red light directly to the scalp.
Precisely spaced diodes surround the scalp, providing 360° coverage across the areas that need it.
Adjustable from 54–62cm and designed to sit naturally on your head without looking like a treatment device.
615, 635 and 650nm. Each wavelength travels to a different depth. Follicles do not all sit at the same depth, so the light reaches them at more than one level.
THE SHELL
Made from premium breathable fabric
125 TRIPLEWAVE DIODES
Evenly spaced across your scalp to target the areas that matter
One diodeCertified and registered
Behind the brand
The people who built it, and the people who back it.
Who built it
Luke HoulderFounder, RedLight Innovation
“I started this company to give men another option. Target the root cause, avoid medication, and own the solution outright.”
Who recommends it
Recommend us · Not one of them paid
750+Doctors, dermatologists and trichologists across four countries.
Who tested it
90 day trial
Microscopy at day 0 and day 90
Day 0
Day 90
Day 0
Day 90Six volunteers, using the device for fifteen minutes a day.
Who advises us
Celestine Gitau
Our in house trichologist
Institute of Trichologists, number 583, on the public register.
Verified results
Real customers. Their own photos.
1,000+ verified reviews · 4.8/5
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After
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Verified on Trustpilot
I have been using this incredible red light therapy cap for over a year and the results are amazing. I get so many comments on how thick my hair is. Its so easy to use, just 15 minutes a day. My hair has never looked better! I highly recommend this cap to anyone with hair loss issues. — Aaron
This product works, I have bought a second red/blue light RedLight Innovation hat for another family member and another is planning to buy one. We bought our first hat in November 2025 and can testify to its effectiveness, prompting a further purchase and recommendations. We particularly like the dual (red/blue) light facility and its effectiveness. I made contact with the Company on Saturday for some advice - not expecting a reply until Monday, I was surprised by the prompt reply on the same day with detailed technical advice and support. I cannot recommend this Company and its products highly enough — Steve Linton
Great product, have been using it for a few months now and I’m feeling a lot more confident than before I started. On top of that the delivery came quicker than expected and the packaging was top notch. Highly recommend. — Sean
I bought my hat at the end of November. I have been using it daily ever since (red and blue light) so 30 minutes a day - the battery lasts around 3 days for me. Recharging is easy as it is USB-C so I use the same charger than I use for my mobile. The hat is stylish. fits well (adjustable) and I enjoy wearing it at home. I have seen positive results since using it, my hair it looking more dense and my scalp is not as visible under bright light. — Callum S
Great product, my hairline is holding strong and firm. Hair on my crown is thickening as well, very happy with the results — Dom Golio
After 7 months of every other day use, my hair has grown back beyond my wildest expectations. I am a Cancer survivor who lost a great amount of hair down the center of my head along with the hair at my temples. I am thrilled to report that my hair growth from the RedLight Cap has grown back a bit thinker that it was prior to my diagnosis. I'll continuing to us my cap to make sure that my hair will remain full, Additionally I thought I would mention this. I will say that I'm not sure this is a result of my Redlight Cap, but my eyelashes have grown so think that i now have to curl them regularly to be able see out of my sunglasses. Compliments comes a few times a week about my eyelashes. I'm a lifer now with RedLight Innovations. My Cap is topnotch. Thank you for giving me back my hair and removing my anxiety about my hair loss. I'm grateful! Celebrate Life! Cheers! — R.E. Dawson
I've been using my Red Light Innovation Cap for 18 months now, and I'm delighted with it. I've noticed my hair looks healthier and thicker, and it's become part of my daily routine. I've recommended it to family and friends. A fantastic product backed by caring customer service. Thank you! — John Rose
After approximately 7 months of daily use, my hair looks much fuller on the sides and back of my scalp and hair loss on top appears to have stopped. Very happy with the results to date. Additionally, the hat and device is very comfortable to use. — Dom Golio
The messages we get
Your next step
Get your Hair Score. Then decide.
The assessment takes 30 seconds, no email required.
Score under 70 and we tell you it isn't for you.
Score on screen · No email for the score · GDPR compliant
Score 70+ and you can use the device for 90/180 days under our guarantee. Full terms apply.
Not every man who takes the assessment will be suitable for our device. If your follicles are too far gone, we will tell you honestly rather than take your money. The hair score exists because we only place the device with men it can genuinely work for.
The doubts
What's actually stopping you. Answered straight.
You're thinking
I won't stick to it.
It's a hat. You wear it on the sofa.
The case lives on the table. Sit down for the evening, see it, put it on and the timer runs itself and most men forget it's on.
No applying, no swallowing, no wet hair twice a day.
You're thinking
£372 is a lot to gamble.
Agreed, so we won't sell it to you blind.
The score tells you whether it can work for you before you spend anything. Under 70 we tell you no. 70+ comes with a guarantee. And look at what the alternatives cost:
You're thinking
And when I miss a few days?
Nothing resets.
Direction, not streaks: every session tilts your trajectory the other way, and a missed weekend just pauses it.
What matters is the pattern over 90 days, not a perfect run.
The day you start
You're thinking
Nothing has ever worked for me.
Maybe our device won't work for you.
The things that failed you were sold to everyone with hair loss.
This starts with an assessment that checks whether your follicles can still respond and if they can't, it tells you so.
The men in our reviews had mostly tried everything too.
You're thinking
It's probably too late for my hair.
Possibly. The score will say and it costs nothing to find out.
Follicles usually go dormant long before they die, and dormant follicles can respond.
That's the difference the assessment measures. Thirty seconds versus wondering for another year.
You're thinking
I'm not wearing this in front of anyone.
You won't. Nobody ever sees it.
Fifteen minutes on your own sofa, then back in its case.
If it works, the only thing anyone notices is your hair.
You're thinking
A quarter of the price of laser caps? What's the catch?
Laser modules are expensive, old technology. That's the whole catch.
Our TripleWave diodes deliver the studied wavelengths at the studied dose (615, 635 and 650nm)
9 J/cm² a session without components designed twenty years ago. And the trial on this page was run on this device.
The practical questions
Are these lasers or LEDs?
LEDs and that matters less than laser marketing wants you to think.
What reaches a follicle is wavelength and dose: 615, 635 and 650nm at 10mW/cm² at the scalp (manufacturer specification).
The trial on this page was run on this device, not on a laser.
Is it safe?
CE and UKCA certified. No prescription, no medication, nothing enters your body.
It's light at controlled intensity, and you can check both certifications.
Will this work at my stage of hair loss?
That's exactly what the assessment tells you.
If your follicles are too far gone, it says so — score under 70 and we tell you it isn't for you rather than take your money.
Do I have to keep using it forever?
No. It's 15 minutes a day while you're growing then, once you're happy with your results, you reduce the sessions, and eventually stop once the follicles are strong.
Does it sit on my head or hover above it?
You wear it like a normal hat. The diodes sit behind a clear film that keeps a small gap over your scalp, so the light spreads evenly, nothing presses on your head.
Will it fit me?
One size, adjustable, 54 to 62cm. There's no small or large to get wrong.
What if my hair gets worse before it gets better?
Some shedding in the early weeks is normal and expected, resting hairs make way for new growth.
Still not sure? That's the point of the score.
THE FINAL STEP
The assessment takes 30 seconds, no email required.
Score under 70 and we tell you it isn't for you.
Score on screen · No email for the score · GDPR compliant
Score 70+ and you can use the device for 90/180 days under our guarantee. Full terms apply.
