All topics / Light for hair
Hair caps.
What to compare.
Five caps and helmets, from simple laser caps to LED helmets. Start with the details the brands publish.
Lasers, LEDs, or both? Two devices in this group use lasers, two use LEDs, and one combines them. That difference alone does not tell you which will work better.
Read the comparison guideCompare the devices
Download the dataScroll sideways to see every field.
| Brand & model | Light sources | Wavelength | Published output | Listed session | Fit & power |
|---|---|---|---|---|---|
 CapillusCapillusPro | Lasers272 lasers | 650 nm | 5 mW per laser; output per cm² not found | 6 min daily | Rigid insert under a capRechargeable battery pack |
 CurrentBodySkin LED Hair Growth Helmet | LEDs120 LEDs | 620–660 nm | Not found on the checked page | 10 min daily | Rigid helmet with Bluetooth headphonesUSB rechargeable; cordless |
 Dr. RenúLED Anti Hair Loss Cap | LEDs192 light cores in 96 modules | 660 + 850 nm | 30–45 mW/cm² total, manufacturer claim | 10 min daily in the comparison; check current manual | Soft fabric cap2000 mAh; USB-C; cordless |
 HairMaxPowerFlex Laser Cap 272 | Lasers272 lasers | 650 / 655 nm — source conflict | 1,360 mW total; output per cm² not found | 7 min, 3 days a week; page also says every other day | Flexible cap; silicone linerRechargeable battery pack |
 iRestoreProfessional | Lasers + LEDs82 lasers + 200 LEDs | 655 nm | 1,410 mW total; output per cm² not found | 25 min; current highlights say 3× weekly | Rigid helmet; 1.25 lbCorded; battery pack extra in comparison source |
No devices match. Try another brand or clear the filters.
Hair research, explained
2025 · PubMed 39404126Red light for hair loss: what 38 studies found
A large review found a useful signal for pattern hair loss, with much less evidence for other causes.
2025 · PubMed 39679573An LED hair-cap trial: why the headline needs context
A trial with 160 participants shows why combined results can tell a different story from separate treatment groups.
2018 · PubMed 29957664Hair growth over 24 weeks: a split-scalp study explained
One side of the scalp received light and the other sham treatment. Here is what changed and why the comparison matters.
All three study notesRead the small print
The device list starts with LED Mask Specs, dated 20 August 2026. We opened the linked manufacturer pages on 1 November 2026. Each device note explains what the current page confirms, what comes from the older comparison, and where the sources disagree.
For example, HairMax lists two wavelengths on one page. iRestore gives different schedules in different sections. We keep those differences visible. These are reported specifications, not our measurements.
We have not independently matched the FDA records to these models. A manufacturer’s clearance claim is not a promise of results for every person. Follow the manual for the exact device you own.