Wavelength Spec
+2.0 KiierrKiierr 5.0–9.0 vs iRestore 5.0–7.0.
Brand comparison
Kiierr vs iRestore
Kiierr scores 5.2 across 7 products; iRestore scores 5.2 across 9. They overlap in laser hair growth caps & helmets. That is 71% of what Kiierr sells and 33% of what iRestore sells. Kiierr leads on wavelength spec, iRestore on value.
All 11 Kiierr products
Kiierr
7 of 11 products scored · $180 – $2,199
- Wavelength Spec — 9.0 against 7.0
5.2
5.2
These two are tied across everything we scored.
Both brands also sell into LED Face & Neck Masks. Neither side carries enough scored products there for a median we would publish, so this comparison does not cover them.
Too close to call
tied
Level on the overall score. The trade-offs below decide it.
Pick Kiierr when
Wavelength spec matters most9.0vs7.0
Pick iRestore when
Value matters most5.0vs4.5
What only Kiierr sells — and only iRestore
Not a loss for either brand. If you need one of these, the choice is already made.
Only Kiierr
Where Kiierr and iRestore differ
Median scores on a 0–10 scale. Each row is one criterion.
Coverage
+2.0 KiierrKiierr 1.0–10.0 vs iRestore 4.0–10.0.
Ease of Use
+2.0 KiierrKiierr 5.0–9.0 vs iRestore 4.0–7.0.
Value
+0.5 iRestoreKiierr: 6 of 7 scored products carry this criterion; iRestore: 5 of 9 scored products carry this criterion.
Verification
tiedKiierr 2.0–7.0 vs iRestore 2.0–7.0.
Build Quality
tiedKiierr 5.0–7.0 vs iRestore 5.0–7.0.
Warranty & Support
tiedKiierr 2 Years (6); iRestore 1 Year (4).
Criterion 1
Not enough data on either side. Kiierr 0 of 7; iRestore 1 of 9.
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
7 of 7
iRestore
9 of 9
What Kiierr and iRestore 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.
Kiierr: 3 of 7 scored products carry this reading; iRestore: 1 of 9 scored products carry this reading.
Source details
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
iRestore
- Neither belt is discussed on Reddit.
- Reddit's iRestore owners are hair-helmet buyers: a March 2026 warning thread (87 upvotes, 41 comments) describes a full refund refused after a year of use in favour of a 25 percent service fee.
- That guarantee is the helmets' 12-month one; the belts carry a 60-day trial.
Brand rollup across scored products.
1 of 9 scored products carry this reading
Amazon
+2.0 iRestoreKiierr: 3 of 7 scored products carry this reading; iRestore: 1 of 9 scored products carry this reading.
Source details
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
iRestore
- Both Apex panels share one Amazon US listing, sold by iRestore, which holds 3 ratings, too few to score.
- IRestore's most-rated device on Amazon US is the Essential hair-growth cap, at 4.0 from 3,511 ratings, split 60 percent five-star against 13 percent one-star.
- Amazon's review summary tags its value for money 229 times, 122 negative.
Brand rollup across scored products.
1 of 9 scored products carry this reading
Kiierr: 3 of 7 scored products carry this reading; iRestore: 1 of 9 scored products carry this reading.
Source details
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
iRestore
- No written review has tested the Sculpt belt; The Coolector's August 2026 piece restates the brand's specifications and sale price.
- Independent written testing of iRestore covers its hair helmets: Innerbody, testing units it bought, describes the brand's reputation as mixed, with complaints that include the terms of the growth guarantee.
Brand rollup across scored products.
1 of 9 scored products carry this reading
YouTube
tiedKiierr: 3 of 7 scored products carry this reading; iRestore: 1 of 9 scored products carry this reading.
Source details
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
iRestore
- No video reviews either Apex panel, and there is no independent video of any iRestore panel: YouTube searches for the Apex 1500 and 2160, together and by name, returned none.
- Independent iRestore videos are all about its hair helmets: JesseDriftwood (July 2021, 200,213 views), who bought the Professional himself and turned down payment from the brand, calls it cheap-feeling plastic with a harsh beep, while Cassandra Bankson (March 2024, 64,583 views), who earns commission on tagged products, and Cybernews (March 2026, 13,927 views), which sells the Elite through an affiliate link, find the Elite comfortable and easy to keep up.
Brand rollup across scored products.
1 of 9 scored products carry this reading
Owner reviews
Only iRestore is scored here (6.0). iRestore: 1 of 9 scored products carry this reading. Kiierr: 0 of 7 scored products carry this reading.
Source details
iRestore
- No US retailer shows reviews of either Apex panel: Target lists both with none, and a retailer search found no other listing with reviews of an iRestore panel.
- IRestore's native retailer pools are about its hair helmet and face masks: Costco's listing for the Professional helmet with serum and battery pack, now unavailable, holds 3.6 from 370 reviews, split 181 five-star against 81 one-star, and its face-and-neck mask duo holds 4.2 from 234, 154 five-star against 16 one-star.
- Walmart's iRestore files are labelled as from irestorelaser.com and are not counted.
Brand rollup across scored products.
1 of 9 scored products carry this reading
Best Kiierr vs best iRestore, 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: 1 · Kiierr only: 1
Wavelength bands — Shared: Red (620-680 nm). Kiierr only: Near-infrared (800-880 nm).
iRestore leads
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
8.2
1st of 40 in Hair Caps & Helmets
Its 510(k), K222081, matches the 300-laser, 500-diode build exactly
Laser majority: 300 of 500 diodes
12-minute daily sessions
$2,699, and the battery pack is $99 more
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
6.7
7th of 40 in Hair Caps & Helmets
Its 510(k), K183417, describes the exact 82-laser, 200-LED build
Coverage reaches temples and sides
Amazon 4.4 from 1,299, the best-rated iRestore helmet there
Only 82 of the 282 lights are lasers
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
5.0
29th of 40 in Hair Caps & Helmets
Its 510(k), K213094, names model ID-500
655 nm lasers and LEDs, 600 mW in total
Lightest iRestore helmet at 1.03 lb
Covers the top and crown, not the temples or sides
Kiierr vs iRestore: the numbers
5.2
Products scored7 of 11
Price range$180 – $2,199
5.2
Products scored9 of 11
Price range$499 – $2,699
Kiierr vs iRestore: common questions
Is Kiierr or iRestore better?
Kiierr 5.2 from 7 scored products; iRestore 5.2 from 9. Level on overall score — the difference is in the criteria.
What is the biggest difference between Kiierr and iRestore?
Wavelength Spec: Kiierr medians 9.0, iRestore medians 7.0 (Kiierr by 2.0).
Which is better for coverage, Kiierr or iRestore?
Kiierr on coverage — Kiierr 8.0, iRestore 6.0.
Which is better for ease of use, Kiierr or iRestore?
Kiierr on ease of use — Kiierr 7.0, iRestore 5.0.
What does Kiierr make that iRestore does not?
Kiierr sells handheld devices; iRestore does not, in the products we scored.
What does iRestore make that Kiierr does not?
iRestore sells red light therapy panels and wraps, pads & belts; Kiierr does not, in the products we scored.
Which Kiierr and iRestore laser hair growth caps & helmets should I buy?
Kiierr: Kiierr 272 Premier Laser Cap. iRestore: iRestore Elite Hair Growth System.
How does Stuff VS Things score Kiierr and iRestore?
Our own product medians: 7 Kiierr and 9 iRestore. 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