GoKawiilHair loss isn’t always dramatic. It can be incremental. You start noticing a bit more scalp in harsh bathroom lighting; a tiny bald spot when you tie your hair up in a ponytail. The shower drain is more clogged than usual. Not long ago, hair-loss treatments meant topical remedies, supplements, or a flight to Turkey. Luckily, red-light therapy brings the potential for hair regrowth into your home—no clinical appointment required.
Beyond skin rejuvenation, clinical studies suggest red-light therapy can help energize hair follicles, increase blood circulation in the scalp, reduce inflammation, and lower dihydrotestosterone levels—a hormone that causes hair loss and thinning. Red-light therapy also supports adenosine triphosphate (ATP) production, which helps provide oxygen and blood flow to the scalp and triggers follicles to remain in the hair growth phase.
To determine the best red-light therapy for hair growth, I tapped five WIRED tech reviewers who've dealt with hair loss themselves. We assessed red-light caps, hands-free helmets with full scalp coverage, and low-level laser therapy (LLLT) or photobiomodulation devices for 16 weeks. Along the way, I reviewed the research, spoke with dermatologists, and tracked ease of use. These are the favorites that produced meaningful results and earned our trust.
Be sure to check out our other wellness and skin care guides, including the Best LED Masks, Best Hair Dryers, and How to Spot Counterfeit Beauty Products on Amazon.
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Updated August 2026: I refined our recommendations and added an Honorable Mentions section. I also added more information to our FAQs, and updated product photos, links, and prices.
How I Test Red-Light Therapy AccordionItemContainerButton LargeChevron To start, I consulted board-certified dermatologists and referred to clinical trials to help determine what features to look for when shopping for a device. I test these devices with several tech reviewers on our team, all of whom have personal experience with hair thinning or loss to different degrees. Most of these at-home gadgets call for a 16-week treatment cycle. We follow the brands' directions and record any visible results along the way. We monitor changes in hair count, hair density, and scalp health, but effectiveness is only one of the factors we consider. We also judge ease of use, functionality, and comfort. We note the specific wavelengths of light and whether the treatment options feel tolerable or difficult to integrate into everyday routines. We also prioritize safety, checking for FDA clearance, automatic shut-off features, and overall durability of the design. To date, our testers have not experienced any side effects, but we would have documented them had they. What Am I Testing Next? AccordionItemContainerButton LargeChevron I'm testing the Foreo Flip Play and the Theradome PRO Laser Hair Growth Helmet LH80.
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Photograph: Molly Higgins
Photograph: Molly Higgins
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