Capillus HairBand: How It Works, Price and What the Research Shows

• Capillus launched the HairBand on Sept. 23, a $599.99 headband that shines 82 red lasers on the part, the hairline and the front of the scalp.
• It uses low-level laser therapy: red light that, per the hair-restoration surgeon quoted by Capillus, stimulates cells in the hair follicle and extends its growth phase.
• Sessions take 5 minutes, three times a week, hands-free, and the brand says results build over weeks and months of consistent use.

The laser-cap company has a headband now. Capillus launched the HairBand on Wednesday (Sept. 23): a $599.99 wearable from the Miami brand that aims 82 laser diodes at the part, the hairline and the front of the scalp.

Those are the places where, the company says, women tend to notice thinning first. The band is on pre-sale at Capillus.com with a one-year warranty. Here’s how it works, what the research behind it found and how to use it.

What is the Capillus HairBand?

It looks like a thick fabric headband with a square control pod on top. Inside, 82 laser diodes, each rated at 5 milliwatts, sit between rows of soft teeth that part the hair to let the light through to the scalp.

The light is red, at 650 nanometers, the same wavelength Capillus uses in its caps. The difference is coverage: a cap covers the whole head, while the band covers a strip across the front, from temple to temple.

We engineered this device female-first because women frequently track subtle, early changes along their part line and hairline.

Domingo “Opi” Moreira, CEO of Capillus, in the launch announcement

Moreira also said the band isn’t only for women: he called it a solution for “anyone” focused on the front of the scalp.

How does red light therapy work on hair?

The technology is low-level laser therapy, also called photobiomodulation. Dr. Ken Anderson, an Atlanta hair-restoration surgeon who teaches dermatology at Emory University, explained it in the launch announcement.

Specific wavelengths of red light, he said, “penetrate the scalp and stimulate cells within the hair follicle.” That boost to the cells’ metabolism “helps prolong the hair follicle’s active growth phase, which can contribute to improved hair density over time.”

Inside those cells, the target is the mitochondria, the structures that produce energy, according to Capillus. The brand says it went with lasers instead of the broad LED panels on the market because lasers give “the focused depth precision required to reach hair follicles.”

Does it work, and how long until you see results?

The research behind the band comes from Capillus’ caps. In a randomized, placebo-controlled study published in Dermatologic Surgery in June 2017, 44 women ages 18 to 60 wore the brand’s 272-diode laser cap every other day for 17 weeks.

The women using the laser cap saw a 51% increase in hair counts compared with the group that wore an identical-looking cap without the active lasers. The HairBand uses the same 650-nanometer light, concentrated on the front of the scalp.

Don’t expect overnight change. Capillus says results come with consistent use “over weeks and months,” and the study measured them at about four months. The brand pitches the band as drug-free and non-invasive, built for early thinning at the part and the hairline.

How do you use it, and how much does it cost?

You put it on like a headband, with the lasers along the hairline, and press the button. The routine is 5 minutes, three times a week, and a timer ends each session. The product page says longer or more frequent sessions “may not increase the effect.”

It’s cordless. The band runs on a magnetic battery that charges over USB-C, and Capillus says a 1.5-hour charge gives up to 8 hours of battery life. The brand’s own suggestion is to wear it while styling your hair, scrolling or answering email.

The HairBand is $599.99 on pre-sale, with a one-year warranty. It’s also the most affordable way into Capillus’ laser line: the brand’s caps, which treat the whole head in six minutes a day, start at $1,699 for the Capillus PRO.

What did Lili Reinhart say about red light therapy?

Red light already has a place in celebrity routines. Lili Reinhart, 30, whose movie The Love Hypothesis premiered on Prime Video the same day the HairBand went on sale, posted a TikTok on Jan. 29, 2024, saying she had just been diagnosed with alopecia.

She filmed it reclining under a curved red light panel and captioned it, “Red light therapy is my new best friend.” She didn’t say which type of alopecia she has. More on the actress is on our Lili Reinhart page.

The Capillus HairBand is $599.99 on pre-sale at Capillus.com. For more on hair, here’s every type of wig, from lace front to glueless, explained. More beauty guides, like how to keep mascara from smudging, are in Style.

— Bruno Monteiro

Sources: Capillus (launch announcement, Sept. 23, 2026, with statements from CEO Domingo “Opi” Moreira and Dr. Ken Anderson, M.D.; HairBand product page and FAQ, and Capillus PRO product page, accessed Sept. 24, 2026); Shelly Friedman, D.O., and Patricia Schnoor, “Novel Approach to Treating Androgenetic Alopecia in Females With Photobiomodulation (Low-Level Laser Therapy),” Dermatologic Surgery, June 2017; Lili Reinhart (TikTok, Jan. 29, 2024). Photos: Capillus; Lili Reinhart’s TikTok.