Peer-reviewed
Low-level laser therapy appears to be a safe and effective treatment for both men and women with pattern hair loss.
Lasers in Surgery and Medicine
Systematic review of photobiomodulation, 2014
660nm true wavelength
200+ laser diodes
15 min auto session
Regrowthy Laser Therapy Cap
Regrow your hair.
Keep your hormones.
The same 660nm laser therapy used in dermatology clinics, FDA-cleared for home use. No pills. No prescriptions. No side effects.
4.972 verified reviewsFDA Cleared660nm Clinical Wavelength53 Studies
$289.99$349.99Save 17%
One-time purchase · Free shipping · 30-day money-back guarantee
Choose your kit
Full routine saves 10%
Regrowthy Laser Cap $289.99
Scalp MassagerFree
Derma RollerFree
Quantity1
Free with every cap: Scalp Massager + Derma Roller ($49 value)
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Free shipping · 30-day guarantee · FDA-cleared · No side effects
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Build your full protocol with the 2-minute quiz.
The science is published in
Medical-grade light therapy
Clinically studied 660nm light.
Built for home, not for the clinic.
Regrows Thinning Areas
Crown, temples, and hairline coverage
Zero Side Effects
Non-invasive, drug-free, hormone-free
Hands-Free and Cordless
Wear it while you work or unwind
For Men and Women
Effective across Norwood stages I to IV
660nm True Wavelength
The clinically optimal red light band
272 Medical-Grade Diodes
Real lasers, not consumer LEDs
15-Minute Sessions
Automatic timer with shutoff
4-5 Sessions Per Charge
USB rechargeable, fully cordless
53peer-reviewed photobiomodulation studies inform the 660nm protocol
272medical-grade laser diodes for full scalp coverage
Individual results vary based on consistency of use and stage of hair loss.
The honest comparison
Why people choose light over drugs.
You should not have to choose between your hair and your health.
The old way
Finasteride
Works, at a cost
- Sexual side effects in some users
- Reported mood and brain-fog effects
- A pill every single day, forever
- Prescription required
Minoxidil
Messy, daily, temporary
- Messy daily liquid or foam
- Scalp irritation and dryness
- Hair falls out if you ever stop
- Twice-daily commitment forever
Recommended
Regrowthy Laser Cap
15 min, 3x per week
- No drugs, no hormones, no side effects
- 15 minutes, 3x per week
- FDA-cleared 660nm technology
- One-time $289.99 purchase
- 30-day money-back guarantee
The same 660nm technology, without the prescriptions, the side effects, or the forever commitment.
Look inside the cap
Not all laser caps are built alike.
The difference is diode density, wavelength accuracy, and dosing control. See it before you feel it.
Generic caps
Around 100 diodes, patchy coverage
80-120 low-density diodes
Patchy coverage leaves whole zones untreated
Unverified "red light" output
Often off-wavelength LEDs with no clinical basis
No timer, no dosing control
Easy to overuse or underuse every session
No guarantee
Typically no returns once the box is opened
Regrowthy272 medical-grade diodes, full coverage
272 medical-grade laser diodes
Full coverage: temples, crown, hairline, sides
True 660nm clinical wavelength
The exact band used in the published trials
15-minute auto-timed sessions
The right dose every time, shuts off itself
30-day money-back guarantee
Plus a 1-year manufacturer warranty
Spec for spec
Nothing comes close.
The same clinical technology. A fraction of the price.
| Feature | Best valueRegrowthy | iRestore Pro | Capillus Pro | Generic Caps |
|---|---|---|---|---|
| PriceThe same class of device for a fraction of the cost | $289.99 | $1,195 | $1,699 | $50-100 |
| Laser DiodesAll 272 are true medical lasers, not LEDs | 272 medical laser | 282 laser + LED | 272 medical laser | 80-120 LED |
| Wavelength660nm, in the clinically studied red-light range | 660nm | 655nm | 650nm | Unknown |
| Hands-Free | ||||
| Free $49 KitScalp massager and derma roller, in every order |
272 true medical lasers, the same count as caps costing far more
660nm, the clinically optimal wavelength
A free $49 kit and a 30-day money-back guarantee
Comparison uses each brand's closest flagship cap (iRestore Professional, Capillus Pro). Competitor specs and prices are drawn from their published listings and are representative; check each brand for current details.
The mechanism
How 660nm light regrows hair.
Photobiomodulation at the clinically optimal wavelength sets off one continuous chain reaction, from photon to follicle.
Follicle cross-section, illustrative
Step 01
Photon Absorption
660nm photons penetrate the scalp and are absorbed by cytochrome c oxidase in hair follicle mitochondria.
Step 02
ATP Production Increases
Cellular energy (ATP) production rises, providing fuel for dormant follicles to reactivate.
Step 03
Hair Growth Resumes
Blood flow improves, inflammation decreases, and follicles transition from resting (telogen) to growth (anagen) phase.
The 90-day arc
Your regrowth timeline.
Here is what to expect with consistent use, 3-4 sessions a week.
Phase 01
Weeks 4-6
Foundation Phase
- Reduced daily shedding
- Stronger existing hair
- Hair feels thicker to touch
- Scalp health improves
Phase 02
Months 3-4
Growth Phase
- Visible new baby hairs
- Thin hairs becoming thicker
- Noticeable density increase
- Hairline beginning to fill
Phase 03
Months 6+
Results Phase
- Significant coverage improvement
- Full protocol benefits realized
- Confidence restored
- Maintenance phase begins
What the literature says
Backed by published research.
Not by marketing claims.
Peer-reviewed
Men treated with 655nm laser therapy saw a 39 percent increase in hair growth over 16 weeks compared to placebo.
Lasers in Surgery and Medicine
Randomized double-blind trial, 2013
Peer-reviewed
Laser-treated participants showed significantly improved hair counts with no serious adverse events reported.
American Journal of Clinical Dermatology
Review of clinical LLLT trials, 2017
Findings summarized from independent, peer-reviewed publications studying the ingredients and technology used in this product category.
The routine
Fifteen minutes. That is the whole job.
Per session
15min
Hands-free, cordless, and auto-timed. Wear it while you work or unwind, three to four times a week.
Hands-freeCordlessAuto shut-off
Step 01
Charge the Cap
Charge via USB before first use, then it is ready whenever your session is.
Step 02
Wear for 15 Minutes
Place cap on head, press power. Relax while 660nm lasers stimulate follicles. Auto-shuts off at 15 min.
Step 03
Repeat 3-4x Per Week
Consistency is key. Use 3-4 times weekly to stay on protocol.
In the box
Everything you get, on us.
The cap arrives with a full accessory kit built to get you started the same day. Nothing else to order.
The deviceRegrowthy Laser Therapy Cap
Free
Scalp Massager
Boosts circulation before each session
Free
Derma Roller
Primes the scalp for better absorption
Total kit value
$398.99$289.99
Cap, Scalp Massager and Derma Roller, all included in every order.
You save
$109.00
Complete the system
Pairs well with.
The cap does the stimulation. These keep the follicles fed and the scalp ready.
02
Daily Density Gummies
Daily internal nutrition that feeds the growth the cap triggers.
$31.49/mo$34.99
FAQ
Common questions.
The Regrowthy cap uses 660nm red light wavelength (clinically proven optimal for hair growth) to stimulate cellular energy production in hair follicles. This process, called photobiomodulation, increases ATP (cellular fuel), improves blood flow to the scalp, and triggers dormant follicles to re-enter the active growth phase.
Just 15 minutes, 3x per week. The cap is hands-free and cordless, so you can wear it while working, watching TV, or relaxing. Consistent use is key. Most users see best results with 3 sessions weekly.
Timeline varies by individual, but the typical progression starts with reduced shedding and stronger existing hair, followed by visible new growth, and later a noticeable improvement in density with continued use. Consistency with the 3-4x weekly protocol is the biggest factor in how quickly you see change.
Completely safe. FDA-cleared technology with zero reported side effects. Unlike finasteride (which can cause sexual dysfunction) or minoxidil (scalp irritation), laser therapy is non-invasive with no systemic effects. No prescriptions needed.
Yes. Laser therapy is completely non-systemic. It does not enter your bloodstream, does not affect hormones, and has no known drug interactions. It works by stimulating cellular energy production directly in the follicle. This is a completely different mechanism than any drug.
If you still have any hair in thinning areas, those follicles are likely dormant, not dead. LLLT is most effective for Norwood stages I-IV. If there is still hair present, there is still opportunity. The key is that the follicle has not been completely scarred over.
Three major differences: (1) 272 medical-grade laser diodes for far more complete coverage than typical budget caps, (2) True 660nm wavelength vs. generic "red light" = clinically proven efficacy, (3) Medical-grade build quality = durability, comfort, and consistent output.
Finasteride blocks DHT but is linked to sexual side effects in some users. Minoxidil is topical but causes scalp irritation and must be applied daily forever. Laser therapy works differently. It stimulates cellular energy with zero side effects, no prescriptions, and no messy daily applications.
We offer a 30-day money-back guarantee, no questions asked. If you're not satisfied for any reason within 30 days, return it for a full refund. Plus, every cap comes with a 1-year manufacturer warranty.
Yes, and it works extremely well. Female pattern hair loss and postpartum shedding are among the most common use cases for LLLT. The 660nm wavelength stimulates follicles regardless of gender. Many of our customers are women who want a non-hormonal, prescription-free option.
Verified buyers
What our buyers are saying.
Every review is from a verified Regrowthy customer. No incentivized or edited testimonials.
4.972 ratingsAll from verified purchases
5★
86%
4★
14%
3★
0%
2★
0%
1★
0%
Customer Photos (14)
Sort:
L
Lucas L., 34Verified Purchase
4 months ago
· 2 months of useActually verified the infrared lights
I was skeptical at first, so I actually tested this with a camera that can see IR light. Sure enough, the infrared diodes were glowing purple/white, which confirms this is the real deal and not just cheap red LEDs. It gets warm (which is good) and fits comfortably. Way better than spending $2,000 on the big brand names for the exact same tech.
D
David K., 29Verified Purchase
4 months ago
· 1 month of useWorks as described
Everything works perfectly. All diodes light up with high intensity. The timer function is handy so I don't have to watch the clock. Shipping was faster than expected.
S
Sarah M., 41Verified Purchase
4 months ago
· 2 months of useHusband loves it
Bought this for my husband who was stressing about his thinning crown. He's been using it for about 6 weeks and says his shedding has completely stopped. The packaging was beautiful, looks like a very premium medical device.
J
James R., 41Verified Purchase
4 months ago
· 1 month of useSolid build quality
Arrived fast. The build quality is surprisingly good, feels robust and the controller is easy to use. I do 20 minute sessions while watching TV. It's warm and relaxing. Too early for major regrowth but the texture of my hair already feels thicker.
M
Marcus H., 37Verified Purchase
4 months ago
· 6 months of useBest investment for my hair
I've been on finasteride for years but wanted to add something non-systemic. This cap fits perfectly into my routine. After 3 months, my barber actually commented that my density looked better.
T
Tom W., 32Verified Purchase
5 months ago
· 1 month of usePowerful LEDs
These lights are STRONG. You can tell it's high power. I use it on setting L4. The adapter gets a little warm but nothing crazy. Highly recommend for the price point.
C
Chris P., 28Verified Purchase
5 months ago
· 8 months of useBetter than iRestore
I returned my $800 helmet and bought this instead. Honestly? I can't tell the difference in quality. The laser diodes look exactly the same. Save your money and get this.
R
Ryan G., 45Verified Purchase
5 months ago
· 2 months of useSimple and effective
I use it every other day. It's so easy to just put on and forget about. No messy creams or pills. I'm seeing baby hairs on my hairline after month 2.
S
S. JohnsonVerified Purchase
5 months ago
Versatile
I actually like that it's flexible. I've used it on my knee for joint pain too since it's just red light therapy. Dual use!
B
Bryan A., 39Verified Purchase
5 months ago
· 10 months of usePremium Feel
The box and presentation were excellent. Felt like opening an Apple product. The cap works exactly as described.
D
Dr. Aris, 52Verified Purchase
5 months ago
· 4 months of useImpressed
As someone in the medical field, I'm impressed by the diode density. It provides good scalp coverage.
S
Sean C.Verified Purchase
5 months ago
Quality
Quality is the same as the ones they use in the spas that charge you $50 a session.
Zero risk
Try it for 30 days.
Keep the results or your money.
If you are not completely satisfied within 30 days, return it for a full refund, no questions asked. Every cap also carries a 1-year manufacturer warranty.
30-day money back1-year warrantyFDA-cleared