Coverage
+2.0 CapillusCapillus 1.0–10.0 vs Kiierr 1.0–10.0.
Brand comparison
Capillus vs Kiierr
Capillus scores 5.2 across 7 products; Kiierr scores 5.2 across 7. They overlap in laser hair growth caps & helmets. That is 100% of what Capillus sells and 71% of what Kiierr sells. Capillus leads on coverage, Kiierr on value.
5.2
5.2
These two are tied across everything we scored.
Too close to call
tied · 0.01 apart
Level on the overall score. The trade-offs below decide it.
Pick Capillus when
Coverage matters most10.0vs8.0
Pick Kiierr when
Value matters most4.5vs4.0
What only Capillus sells — and only Kiierr
Not a loss for either brand. If you need one of these, the choice is already made.
Only Capillus
Nothing outside the shared categories.
Where Capillus and Kiierr differ
Median scores on a 0–10 scale. Each row is one criterion.
Warranty & Support
+2.0 CapillusCapillus 3 Years (4); Kiierr 2 Years (6).
Ease of Use
+2.0 CapillusCapillus 7.0–9.0 vs Kiierr 5.0–9.0.
Wavelength Spec
+1.0 CapillusCapillus 7.0–10.0 vs Kiierr 5.0–9.0.
Value
+0.5 KiierrKiierr: 6 of 7 scored products carry this criterion.
Verification
tiedCapillus 2.0–7.0 vs Kiierr 2.0–7.0.
Build Quality
tiedCapillus all scored 5.0.
Criterion 1
Not enough data on either side. Capillus 0 of 7; Kiierr 0 of 7.
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
Capillus
7 of 7
Kiierr
7 of 7
What Capillus and Kiierr owners report
Independent sources pooled per brand. Each row is one source.
N of M = how many scored products carry the brand-level reading shown, out of all scored.
Capillus: 1 of 7 scored products carry this reading; Kiierr: 3 of 7 scored products carry this reading.
Source details
Capillus
- Reddit discussion of Capillus centers on its caps, not the HairBand, which went on pre-order on September 23, 2026.
- A June 2025 r/redlighttherapyhair thread (12 comments) reports a Capillus Spectrum that took two weeks to arrive with no tracking, unsealed packaging and residue inside the cap, though the owner rated build quality 8 out of 10.
- A May 2026 report, posted in two threads, describes a Capillus cap returned for being too big, shown delivered by USPS tracking, and still unrefunded (about $2,000) six months later.
- In a June 2025 r/redlighttherapy thread comparing Kiierr with the Capillus Pro (9 comments), two owners call the Capillus fit loose or wobbly, and a September 2024 thread (6 comments) reports the v4.6 battery pack discontinued, with rewiring for the newer pack costing a couple of hundred dollars.
- One 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
Kiierr
- Reddit discussion of Kiierr is mostly about the company rather than one cap, and it runs negative on the guarantee and on support.
- 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, although monthly photos had been sent, because the returns manager wanted them submitted month by month with no lapse
- The poster and another commenter add that most Kiierr content they find on Instagram and Reddit is paid partnerships and affiliate blog posts.
- The long-running r/redlighttherapy thread on the Kiierr MD cap (94 comments, 2022 to 2026) carries a November 2022 owner report of 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 in the same thread report $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), and a European buyer who waited a month for delivery, called the build very good quality and never received the promised gifts (July 2025).
- 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: 1 of 7 scored products carry this reading; Kiierr: 3 of 7 scored products carry this reading.
Source details
Capillus
- Written coverage of the HairBand so far consists of reprints of Capillus's September 23, 2026 press release (PR Newswire, Trend Hunter, Fitt Insider, Brands Review Magazine), with no hands-on test.
- The one current hands-on Capillus test is Wareable's September 2026 two-month review of the PRO, Spectrum and TriSpectrum caps, on a site that earns affiliate commissions on its Capillus links.
- The tester found the 6-minute session far easier to keep up than Kiierr's 30 minutes, but had to recharge the battery every five to six days, about 36 minutes of use, and called the price, from $1,019.40 on sale, the main drawback.
Brand rollup across scored products.
1 of 7 scored products carry this reading
Kiierr
- Three hands-on write-ups cover Kiierr caps, all from sites that earn on the sale or received the unit.
- Wareable's May 2026 review of the 148 Pro, on a site carrying affiliate links to Kiierr, rated it 3.5 out of 5, found the roughly one-pound cap comfortable through three months of 30-minute sessions, liked the beep every 10 minutes and the auto-off, and named a power pack that takes 10 to 12 hours to recharge as its main annoyance.
- Innerbody's review, which sells the caps under its own 15 percent code INNERBODY, tested the 272 MD on camera, lists 5 to 7 sessions per charge on the Premier and 8 to 10 on the MD, faults the 30-minute every-other-day routine as long, and says the complaints it found mostly concern communication during returns under the 7-month guarantee.
- 5 Minutes for Mom's 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.
- The rest of the 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
YouTube
tiedCapillus all scored 5.0.
Source details
Capillus
- No independent video covers the HairBand yet, so the pool rests on four owner videos of older Capillus caps from 2020 to 2023.
- HairHoney's February 2022 video (11,414 views, a cap given to the creator's mother, channel links its own Etsy shop) calls the 272-laser cap massive and hard to keep on straight and notes slight warmth, on a cap that cost about $3,000.
- Ryan's Reviews' December 2023 video (6,470 views, Amazon affiliate links) reports an eight-year-old Capillus still running, 3 to 4 sessions per charge, and a loose fit on a smaller head.
- The Costco Review Guy's November 2020 first look at a Costco-bought Capillus 82 (about $900) found operation simple but felt itching or a burning sensation near the end of the 6-minute session.
- Florencia Rodriguez's May 2023 video on the CapillusUltra (about 6,300 views) praises a battery pack that lasts several uses and the auto shutoff when the cap comes off.
Brand rollup across scored products.
1 of 7 scored products carry this reading
Kiierr
- Independent video coverage of Kiierr is thin and monetised.
- Healthnews, a channel that sells the caps under its own code CYB beside iRestore, HigherDOSE and Mito deals, has three Kiierr 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).
- In the 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.
- 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
Amazon
tiedCapillus: 1 of 7 scored products carry this reading; Kiierr: 3 of 7 scored products carry this reading.
Source details
Capillus
- The HairBand has no Amazon listing, so the closest Capillus file is the 82-laser CapillusUltra cap (currently unavailable, last listed at $995), which holds 3.8 from 391 ratings, split 53 percent five-star to 16 percent one-star.
- Its tags show quality mentioned 27 times, ease of use 19 times and comfort 5 times, all positive, while fit (18 mentions) and value for money (15) are negative and adhesiveness (10) is mixed.
- The caps now in stock, sold by Curallux, rate lower on small files: the PRO at $1,699 holds 3.4 from 12 ratings (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).
- Separate older files for the Pro (3.4 from 80), Plus (3.5 from 77) and ONE (3.8 from 75) are all unavailable.
Brand rollup across scored products.
1 of 7 scored products carry this reading
Kiierr
- Kiierr's Amazon store, sold by Kiierr International and fulfilled by Amazon, carries one laser-cap listing with ratings, the 272 Premier listed under its clearance name 'Family of Devices, 272 and 148' (ASIN B0BGT7JBNM), at 3.8 from 107 ratings, split 56 percent five-star against 18 percent one-star, at $1,099.99.
- Amazon's aspect tags on it read 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
Brand rollup across scored products.
3 of 7 scored products carry this reading
Owner reviews
Only Capillus is scored here (4.0). Capillus: 1 of 7 scored products carry this reading. Kiierr: 0 of 7 scored products carry this reading.
Source details
Capillus
- The HairBand sells only on capillus.com, so the retailer pool is Costco's own review file for Capillus caps, which is native to Costco, not syndicated, and carries no incentive flags.
- The CapillusUltra cap holds 3.35 from 353 reviews written in 2019 and 2020, with 151 reviewers recommending it to 88 not, a 63 percent recommend rate.
- The current Capillus Pro Cap listing ($1,199.99 at Costco versus $1,699 on capillus.com) holds 3.46 from 67 reviews dated December 2023 to April 2025, split 14 to 14 on recommending it, and its low-rated reviews cite a unit that beeped nonstop and failed out of the box, a single cap size too small for two reviewers, a missing promised shampoo bundle, and price.
- Across Costco's eight Capillus laser-cap listings, 238 reviewers recommend and 172 do not, a 58 percent rate.
Brand rollup across scored products.
1 of 7 scored products carry this reading
Best Capillus vs best Kiierr, category by category
The three best-scoring products each brand sells in every category they both compete in, ranked by overall score.
Laser Hair Growth Caps & Helmets
See all Laser Hair Growth Caps & Helmets productsShared: 2
Wavelength bands — Shared: Red (620-680 nm), Near-infrared (800-880 nm).
Kiierr leads
7.5
4th of 40 in Hair Caps & Helmets
510(k) K143199 and K163170 describe the 272-diode, 650 nm cap
272 lasers at 650 nm and 5 mW each, Class 3R stated
6-minute auto-timed daily session, cordless
No total output published or measured
7.6
3rd of 40 in Hair Caps & Helmets
510(k) K181878 describes the 272-diode, 650 nm cap
272 lasers at 650 nm, 1,360 mW total per Kiierr
Cordless, auto-off, worn under an ordinary ball cap
30-minute sessions every other day
6.1
13th of 40 in Hair Caps & Helmets
304 lasers at 650 nm and 5 mW each, 1,520 mW total stated
Class 3R stated, with wavelength and per-diode output published
6-minute auto-timed daily session, cordless
Sold as FDA-cleared; listed under K162994 and K163170, which describe no 304-diode cap
6.4
10th of 40 in Hair Caps & Helmets
510(k) K181878 describes the 148-diode, 650 nm cap
148 lasers at 650 nm, 740 mW total per Kiierr
Cordless, with a pocket battery pack and auto-off
30-minute sessions every other day
5.4
21st of 40 in Hair Caps & Helmets
312 lasers, 40 of them near-infrared at 808 nm
Both wavelengths, 5 mW per diode and Class 3R published
Up to six 6-minute sessions per charge, with a docking station
Sold as FDA-cleared; K162994 describes a 312-laser cap at 650 nm only
5.8
15th of 40 in Hair Caps & Helmets
312 lasers, 272 at 650 nm and 40 at 808 nm
1,560 mW total per Kiierr, the most of any Kiierr cap
6-minute daily sessions, cordless with auto-off
No 510(k) describes it, though Kiierr sells it as FDA cleared
Capillus vs Kiierr: the numbers
5.2
Products scored7 of 7
Price range$225 – $3,699
5.2
Products scored7 of 11
Price range$180 – $2,199
Capillus vs Kiierr: common questions
Is Capillus or Kiierr better?
Capillus 5.2 from 7 scored products; Kiierr 5.2 from 7. Level on overall score — the difference is in the criteria.
What is the biggest difference between Capillus and Kiierr?
Coverage: Capillus medians 10.0, Kiierr medians 8.0 (Capillus by 2.0).
Which is better for warranty & support, Capillus or Kiierr?
Capillus on warranty & support — Capillus 6.0, Kiierr 4.0.
Which is better for ease of use, Capillus or Kiierr?
Capillus on ease of use — Capillus 9.0, Kiierr 7.0.
What does Kiierr make that Capillus does not?
Kiierr sells led face & neck masks and handheld devices; Capillus does not, in the products we scored.
Which Capillus and Kiierr laser hair growth caps & helmets should I buy?
Capillus: Capillus PRO 272 Laser Cap. Kiierr: Kiierr 272 Premier Laser Cap.
How does Stuff VS Things score Capillus and Kiierr?
Our own product medians: 7 Capillus and 7 Kiierr. A criterion is compared only where both brands clear the floor.
Other comparisons
Scores calculated 4 October 2026 · Products excluded where fewer than two independent sources cover them · · How we score