Xtrallux Laser Comb vs Reseen Weave: Which Laser Hair Comb Fits You?

Quick verdict: Choose the Xtrallux Laser Comb Alpha if you want an inexpensive, available-now laser hair comb ($199 list, $149 on sale when we checked) with a published six-minute daily routine, a 12-month warranty and a 6-month money-back guarantee. Choose Reseen Weave if you want 36 light-guided teeth that release 660nm VCSEL laser light right at the scalp, and you're fine waiting for a coming-soon device with a pending FDA 510(k) and an unpublished routine.

At a glance

Info checked: October 2026. Weave's price is planned and provisional. Xtrallux's homepage describes the comb's session as "6 minutes per zone"; its product page says "6 minutes each day."

Light delivery: what the teeth do

A laser comb exists because hair gets in the way. Strands, especially darker ones, absorb and scatter light before it reaches the scalp and follicle area, so combs use teeth to part the hair.

Xtrallux doesn't describe how its comb's teeth or lasers are arranged. Its product page says the comb fits "perfectly in your hand" and includes a therapeutic massage option. We can't say more about its design without guessing.

Weave's RootReach™ design makes each of its 36 teeth a light guide. 660nm laser light travels down the tooth and exits at the tip, which rests on the scalp, so there's no layer of hair between where the light leaves the device and where the skin begins. This is a design principle; Reseen hasn't published measurements comparing it with other combs.

Where Xtrallux wins: it's on sale now, with a published routine you can start today.

Lasers: are both VCSEL?

Possibly, but we can't confirm it for the comb. Xtrallux's caps are described on its site as using VCSEL SMT laser diodes (see Halo vs Xtrallux). The Laser Comb Alpha's product page lists GaAlAs semiconductor diodes at about 5mW each and doesn't say whether they're VCSELs. So both devices use low-power red lasers; whether they share the same emitter type is not published for the Xtrallux comb.

Weave uses VCSEL lasers through VIPE™, Reseen's photonic engine, with a beam angle under 20° and under 5mW per emitter, according to Reseen. A narrow beam couples readily into a small light-guiding tooth, which is why RootReach pairs the two.

Wavelengths are close: 650nm (±10nm) for Xtrallux, 660nm for Weave, both deep red light. For how laser and LED devices differ, see LED vs laser.

Fair to say: neither brand publishes total output figures for its comb, so on the lasers themselves we call it even on what we can verify.

Routine and ease of use

Xtrallux keeps it short: six minutes a day, per its product page. That's quick, but daily. The comb comes with a power adapter and cable, a travel case and a user manual; the page doesn't mention a battery.

Weave's session time, frequency and battery details are not yet published. Like any comb, both are hands-on, and your scalp coverage depends on working section by section, keeping the teeth in contact with the scalp. If you'd prefer hands-free, see Reseen's liner, Halo.

Evidence and FDA status

Xtrallux. The comb's product page says the device "is cleared by the US Food & Drug Administration" to treat androgenetic alopecia in adult men (Norwood-Hamilton IIa to V) and women (Ludwig-Savin I-1 to I-4, II-1, II-2 or frontal), skin types I to IV. It doesn't give a 510(k) number. Xtrallux's homepage cites K222364. When we checked FDA's database, K222364 (November 2022) names four caps: the Alpha, Super Plus, Turbo Pro and Extreme RX, and its 510(k) summary describes diodes housed in a cap. We found no other Xtrallux listing. If clearance matters to you, ask Xtrallux which 510(k) covers the Laser Comb Alpha.

On trials, Xtrallux's page cites studies of 650nm low-level laser therapy, including a female randomized trial, as support for the technology. We didn't find a published trial of the Xtrallux comb itself. More broadly, laser combs as a category have been studied: a 2021 review in the Journal of Clinical and Aesthetic Dermatology by Lueangarun and colleagues found no significant difference between comb- and helmet-type home devices in pooled trials.

Reseen Weave. FDA 510(k) clearance is pending, and Reseen hasn't published clinical trials on Weave. It's a cosmetic device designed to support scalp health for a healthier-looking scalp and fuller-looking hair.

Where Xtrallux wins: the company has an FDA clearance on record for its caps and says the comb is cleared. Weave's clearance is still pending.

Price, warranty and the money-back guarantee

Xtrallux wins on price. The Laser Comb Alpha lists at $199 and was $149 on sale when we checked; Weave is planned at $299, provisional until launch.

Xtrallux offers a 12-month manufacturer's warranty, with registration requested within 30 days. Its 6-month money-back guarantee has conditions: per Xtrallux's site, you must register within 30 days and use the device for at least six months, Shop Pay financed purchases are excluded, and a 25% restocking fee applies. For Weave, see Reseen warranty.

Which should you choose?

• Choose Reseen Weave if… you want a laser hair comb with 36 light-guided teeth that release 660nm VCSEL laser light at the scalp, and you're willing to wait for launch details, a planned $299 price and a pending FDA decision.

• Choose the Xtrallux Laser Comb Alpha if… you want a lower price, a device you can buy today, a simple six-minute daily routine and published warranty and guarantee terms.

Comparing more combs? See Weave vs HairMax, Weave vs Maysama, Weave vs Laduora and Weave vs Solaris.

Frequently asked questions

How many lasers does the Xtrallux Laser Comb have?

Nine, per Xtrallux's product page: about 5mW each at 650nm (±10nm).

Is the Xtrallux laser comb FDA-cleared?

Xtrallux says it is, but its comb page doesn't give a 510(k) number. The clearance its site cites, K222364, names four Xtrallux caps in FDA's database. Ask Xtrallux for the comb's clearance details.

How long do you use the Xtrallux laser comb?

Six minutes a day, per its product page. Its homepage says six minutes per zone.

Does a laser comb for hair growth work?

Laser combs, mainly HairMax's, have been tested in randomized, sham-controlled trials. Results belong to the devices studied. Weave is a cosmetic device designed to support scalp health; its FDA 510(k) is pending.

Is Xtrallux the same as a laser cap?

Xtrallux sells both. Its caps have 136 to 352 VCSEL lasers; the comb has nine diodes. See Halo vs Xtrallux.

Sources

1. Xtrallux homepage and FAQ — Xtrallux, accessed Oct 2026

2. Xtrallux Laser Comb Alpha for Hair Growth — Xtrallux, accessed Oct 2026

3. 510(k) Premarket Notification K222364 and 510(k) Summary K222364 — U.S. FDA, 2022

4. openFDA 510(k) search: applicant Xtrallux — U.S. FDA, accessed Oct 2026

5. GUDID device record: Xtrallux Alpha — U.S. National Library of Medicine, accessed Oct 2026

6. A Systematic Review and Meta-analysis of Randomized Controlled Trials of US FDA-Approved, Home-use, Low-Level Light/Laser Therapy Devices for Pattern Hair Loss — Lueangarun S, et al.; Journal of Clinical and Aesthetic Dermatology, 2021

Product information for Xtrallux is based on publicly available sources as of October 2026 and may change; check the manufacturer's site for current details. Xtrallux is a trademark of its respective owner; Reseen is not affiliated with or endorsed by it. This page is for general education and is not medical advice. Reseen devices are cosmetic devices; individual results vary.