Kiierr scores 5.2 across 7 products; Capillus scores 5.2 across 7. They overlap in laser hair growth caps & helmets. That is 71% of what Kiierr sells and 100% of what Capillus sells. Kiierr leads on value, Capillus on coverage.
3 years on the cap, 1 year on the battery pack and adapter
Guarantee: refunds keep a 25 percent fee and return shipping, capillus.com purchases only
Support: waits of over an hour to start a live chat, per one guide
Ease of UseKiierr: 7Capillus: 9 (higher)
Kiierr top-scored: 272 Premier Laser Cap
Pulsed 30-minute sessions every other day, cordless, with auto-off
Eyes: Innerbody notes it lacks the eye-safety sensor on Kiierr's MD caps
Charging: Innerbody logs 5 to 7 sessions per charge
Capillus top-scored: PRO 272 Laser Cap
Cordless, auto-timed 6-minute daily session
Wavelength SpecKiierr: 9Capillus: 10 (higher)
Kiierr top-scored: 272 Premier Laser Cap
272 diodes at a published 650 nm, 1,360 mW in total per Kiierr
Output not scored: no measurement of its output has been published
Capillus top-scored: PRO 272 Laser Cap
650 nm at 5 mW per diode, Class 3R stated
Output not scored: Capillus publishes no total output and none has been measured
ValueKiierr: 4.5 (higher)Capillus: 4
Kiierr top-scored: 272 Premier Laser Cap
$1,199, $300 below the 272 DualWave and its 6-minute daily sessions
Capillus top-scored: PRO 272 Laser Cap
$1,699, $1,000 less than the Spectrum
Spectrum: adds 40 near-infrared lasers for the extra $1,000
Same score
VerificationKiierr: 2Capillus: 2
Kiierr top-scored: 272 Premier Laser Cap
Kiierr's own 510(k), K181878, describes this 272-diode cap
Limits: K181878 does not describe the 302 or either DualWave cap
Capillus top-scored: PRO 272 Laser Cap
K143199 and K163170 describe a 272-diode cap at 650 nm
Conflict: the filings give an every-other-day schedule; capillus.com now says daily
Build QualityKiierr: 5Capillus: 5
Kiierr top-scored: 272 Premier Laser Cap
Rigid dome under a ball cap; Amazon tags say it slips when moving
Fit: Amazon tags say it runs small; about half of Innerbody's testers found the standard cap small
Capillus top-scored: PRO 272 Laser Cap
Cordless dome under a sport cap; owners report loose fit and battery faults
Battery: 4 to 5 sessions per charge in one guide
Social score about Kiierr and Capillus
Independent sources pooled per brand. N of M = how many scored products carry the brand-level reading shown, out of all scored.
KiierrCapillus
RedditKiierr: 3Capillus: 4 (higher)
Kiierr
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Focus: Reddit discussion of Kiierr is mostly about the company rather than one cap, and it runs negative on the guarantee and on support
Guarantee fee: in a July 2026 r/tressless thread (32 comments), one owner says a return requested after 10 months on the extended guarantee drew the 25 percent service fee, over $500
Reason: monthly photos had been sent, but the returns manager wanted them submitted month by month with no lapse
Paid content: the poster and another commenter say most Kiierr content they find on Instagram and Reddit is paid partnerships and affiliate blog posts
MD cap thread: the long-running r/redlighttherapy thread on the Kiierr MD cap (94 comments, 2022 to 2026) carries a November 2022 owner report
Owner report: a battery that soon needed charging after every session, a loose USB connector, a cap too small with the larger size costing about twice as much, and a refund only after 7 months with photos and a restocking fee
Later replies: $1,500 lost with emails and calls ignored (January 2024) An order that shipped while it was being cancelled and could not then be returned (August 2025)
European buyer: waited a month for delivery, called the build very good quality and never received the promised gifts (July 2025)
Ads: an October 2025 r/Hairloss thread (5 comments) calls Kiierr's Reddit ads predatory, and an August 2026 commenter says the brand advertised a Shark Tank appearance it never made
Brand rollup across scored products. 3 of 7 scored products carry this reading.
Capillus
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Scope: Reddit discussion centers on the caps, not the HairBand, which went on pre-order on September 23, 2026
Delivery: a June 2025 r/redlighttherapyhair thread (12 comments) reports a Spectrum that took two weeks with no tracking, unsealed packaging and residue inside, though the owner rated build quality 8 out of 10
Refund: a May 2026 report, posted in two threads, describes a cap returned for being too big, shown delivered by USPS, still unrefunded (about $2,000) six months later
Fit: in a June 2025 r/redlighttherapy thread comparing Kiierr with the Capillus Pro (9 comments), two owners call the fit loose or wobbly
Battery: a September 2024 thread (6 comments) reports the v4.6 pack discontinued, with rewiring for the newer pack costing a couple of hundred dollars
Fee: a 2023 r/Hairloss commenter, hit by Theradome's 25 percent return deduction, named Capillus as the only brand upfront about its fee
Brand rollup across scored products. 1 of 7 scored products carry this reading.
Same score
GoogleKiierr: 6Capillus: 6
Kiierr
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Coverage: three hands-on write-ups cover Kiierr caps, all from sites that earn on the sale or received the unit
Wareable: its May 2026 review of the 148 Pro, on a site carrying affiliate links to Kiierr, rated it 3.5 out of 5 and found the roughly one-pound cap comfortable through three months of 30-minute sessions
Wareable view: liked the beep every 10 minutes and the auto-off Named a power pack that takes 10 to 12 hours to recharge as its main annoyance
Innerbody: sells the caps under its own 15 percent code INNERBODY, tested the 272 MD on camera, and lists 5 to 7 sessions per charge on the Premier and 8 to 10 on the MD
Innerbody view: faults the 30-minute every-other-day routine as long Says the complaints it found mostly concern communication during returns under the 7-month guarantee
5 Minutes for Mom: its 2020 to 2022 review used a cap Kiierr sent free, with no affiliate link, and found it simple to run with a 30-minute auto-off
Rest: the remaining Kiierr web coverage is templated affiliate pages and coupon sites that show no use
Brand rollup across scored products. 3 of 7 scored products carry this reading.
Capillus
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HairBand: coverage so far is reprints of Capillus's September 23, 2026 press release (PR Newswire, Trend Hunter, Fitt Insider, Brands Review Magazine), with no hands-on test
Wareable: the one current hands-on Capillus test, two months with the PRO, Spectrum and TriSpectrum caps (September 2026 Earns affiliate commissions on its Capillus links)
Findings: the 6-minute session far easier to keep up than Kiierr's 30 minutes Recharging every five to six days, about 36 minutes of use Price, from $1,019.40 on sale, the main drawback
Brand rollup across scored products. 1 of 7 scored products carry this reading.
YouTubeKiierr: 5Capillus: 5
Kiierr
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Coverage: independent video coverage of Kiierr is thin and monetised
Healthnews: sells the caps under its own code CYB beside iRestore, HigherDOSE and Mito deals, and has three Kiierr videos
Videos: a July 2024 unboxing of the 272 Premier (12,783 views), a January 2026 review after about a month of use, and a February 2026 comparison against the iRestore Elite (6,353 views)
January 2026 review: the presenter found the 272 comfortable while watching TV or working, felt only light warmth, and pointed to the Velcro strap at the back for sizing and the 30-minute auto-off
Terms: the same video tells buyers to keep a before photo for the 7-month guarantee and notes the two-year warranty for a unit that malfunctions
Brand rollup across scored products. 3 of 7 scored products carry this reading.
Capillus
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Scope: no independent video covers the HairBand Four owner videos of older Capillus caps from 2020 to 2023
HairHoney: a 272-laser cap given to her mother, about $3,000 Massive, hard to keep on straight, slightly warm (February 2022, 11,414 views The channel links its own Etsy shop)
Ryan's Reviews: an eight-year-old Capillus still running, 3 to 4 sessions per charge, a loose fit on a smaller head (December 2023, 6,470 views Amazon affiliate links)
The Costco Review Guy: a Costco-bought Capillus 82 (about $900) Simple to run, but itching or burning near the end of the 6-minute session (November 2020, first look)
Florencia Rodriguez: the CapillusUltra
Brand rollup across scored products. 1 of 7 scored products carry this reading.
AmazonKiierr: 6Capillus: 6
Kiierr
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Listing: Kiierr's Amazon store, sold by Kiierr International and fulfilled by Amazon, carries one rated laser-cap listing, the 272 Premier under its clearance name 'Family of Devices, 272 and 148' (ASIN B0BGT7JBNM), at $1,099.99
Rating: 3.8 from 107 ratings, split 56 percent five-star against 18 percent one-star
Tags: quality 24 mentions, 22 positive Ease of use 20, all positive Fit 8, 5 positive Staying in place (Amazon's 'adhesiveness' tag) 8, 5 negative Battery life 6, 4 positive Size 5, 4 negative
Quoted reviews: the cap runs small, one from a buyer with a 23-inch head who could not pull it down against a 24-inch claim
Brand rollup across scored products. 3 of 7 scored products carry this reading.
Capillus
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Closest file: no HairBand listing The 82-laser CapillusUltra cap (currently unavailable, last listed at $995) holds 3.8 from 391, 53 percent five-star to 16 percent one-star
Tags: quality 27 times, ease of use 19 and comfort 5, all positive Fit (18) and value for money (15) negative Adhesiveness (10) mixed
Current caps: sold by Curallux, the PRO at $1,699 holds 3.4 from 12 (39 percent five-star to 31 percent one-star) and the Pro S1 at $2,199 holds 3.1 from 17 (46 percent to 44 percent)
Older files: the Pro (3.4 from 80), Plus (3.5 from 77) and ONE (3.8 from 75), all unavailable
Brand rollup across scored products. 1 of 7 scored products carry this reading.
Scored for one brand only
Owner reviewsKiierr: —not scoredCapillus: 4
Capillus
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Costco: sold only on capillus.com, so the pool is Costco's own file for Capillus caps, native, not syndicated, with no incentive flags
CapillusUltra: 3.35 from 353 reviews written in 2019 and 2020 151 recommend to 88 not, a 63 percent rate
Capillus Pro Cap: $1,199.99 at Costco versus $1,699 on capillus.com 3.46 from 67 reviews, December 2023 to April 2025, split 14 to 14
Criticised: a unit that beeped nonstop and failed out of the box, a single size too small for two reviewers, a missing promised shampoo bundle, and price
Across listings: on Costco's eight Capillus laser-cap listings, 238 recommend and 172 do not, a 58 percent rate
Brand rollup across scored products. 1 of 7 scored products carry this reading.
The scores above are our reading of the evidence below. This is the evidence.
FDA status is recorded per product from FDA's own records, not from the maker's wording. A 510(k) clearance can be checked by its number in FDA's 510(k) database.
Warranty terms
Kiierr
7of 7
2 Years6
1 Year1
Capillus
7of 7
3 Years4
5 Years1
1 Year1
60 Days1
What only Kiierr sells — and only Capillus
Not a loss for either brand. If you need one of these, the choice is already made.
Scores calculated 11 November 2026 · Products excluded where fewer than two independent sources cover them · Researched and edited by Michael Ambrose · Unbroken Ads LLC · How we score