Best red light therapy hats in the UK (2026)

How we compared these hats

We compared wavelengths, published output, coverage, session time, published clinical evidence, UK price, warranty and returns.

• Wavelengths The nanometres each manufacturer prints on its product page.
• Published output The power figure on the product page, in the units the brand uses.
• Coverage The coverage figure each brand publishes, or “Not stated” when the page does not give one.
• Session time The session length printed on the product page.
• Published clinical evidence The study, series or survey the brand itself describes for that device.
• UK price The price on the brand’s own UK page in October 2026.
• Warranty The warranty terms this guide has recorded, or a pointer to the brand’s UK page.
• Returns The returns terms this guide has recorded, or a pointer to the brand’s UK page.

Jump to our top pick

Quick verdict

The RedLight Innovation Hat Pro is our best overall pick at £372. It is a soft cap with a published 54–62 cm fit, and it names 615, 635 and 650 nm, plus 450 nm blue. Coverage is about 80%, the panel is 500 mW, and a session is 15 minutes. Research suggests red light may help with pattern hair loss with consistent use over months.

Jump to our top pick

The four hats

The Hat Pro product page says about 80% coverage. CurrentBody describes a full-head helmet. HigherDOSE publishes 120 LEDs at 650 nm, and Beauty Pie publishes 125 LEDs at 655 nm.

How do the four hats compare?

The RedLight study

RedLight Innovation’s own page describes a series of 6 volunteers, 3 men and 3 women, using the hat for 15 minutes a day for 90 days. The brand says the series finished in August 2024. It does not describe a control group. Read the study page.

What do buyers say on the brand’s website?

These quotes are customer reviews on RedLight Innovation’s own website. They are not reviews by this guide.

The lights are extremely bright and the quality of the hat is probably the best I have felt ever. It feels really well made and comfortable to wear, and you can tell a lot of thought has gone into the design.

I'm not sure if its hugely noticeable but I feel it has definitely helped

I mixed my treatment with 5% minoxidil foam everyday… These are my progress pics after 85 days and I'm so happy with the way my hair is looking already.

Which other hats are worth considering?

Beauty Pie is the budget cap, HigherDOSE is the cordless cap, and CurrentBody is the premium helmet. The Hat Pro card stays highlighted because it is the best overall.

Swipe →

Best overall RedLight Innovation Hat Pro £372 Our pick

Best budget Beauty Pie All Systems Grow £332 Read the review

Best cordless cap HigherDOSE Red Light Hat £449 Read the review

Best premium helmet CurrentBody LED Hair Growth Helmet £649.99 Read the review

What should a red light hat include?

A useful red light hat names its wavelengths, its published output, how much of the scalp the light reaches, and a session time. The Hat Pro lists 615, 635 and 650 nm, plus 450 nm blue. It also publishes a 54–62 cm fit, about 80% coverage, a 500 mW panel and a 15-minute session, at £372.

Research suggests red light may help with pattern hair loss when you use it consistently over months. Hair-density studies mostly use red light around 630–680 nm, which covers the Hat Pro’s 635 and 650 nm. Blue light and near-infrared are different claims. These four product pages list red wavelengths, and the Hat Pro also lists 450 nm blue.

Which hat should you buy if you want something else?

Choose CurrentBody for a rigid helmet, HigherDOSE for a cordless cap, or Beauty Pie for the lowest list price. Measure your head first. The Hat Pro’s 54–62 cm range is a published cap fit. CurrentBody splits medium and large either side of about 59 cm.

HigherDOSE is the cordless 10-minute cap, at £449. Beauty Pie is the lowest list price, at £332, with 655 nm red light. CurrentBody’s UK page listed the helmet as out of stock when checked on 18 October 2026. Beauty Pie’s UK page listed the cap as out of stock when checked in October 2026. Laser caps from brands such as HairMax and Capillus appear in the research.

The longer checklist is the buying guide. LED or laser explains the difference in the light itself.

Does red light therapy work for hair loss?

For pattern hair loss, the pooled trials found more hair, on average, with a real red light or low-level laser device than with a sham that looked the same but did not emit the light. Liu and colleagues reported that pattern in sham-controlled trials. Studies usually look at 16 to 26 weeks. They do not all agree on how big the change is.

If your shedding is sudden, patchy, or comes with illness, see a GP before you buy a device. The NHS asks for that conversation before a commercial clinic. The numbers, and how minoxidil compares, are on the evidence page and in red light or minoxidil.

When did the studies measure a change?

The stronger sham-controlled trials counted hairs at about 16 to 26 weeks. Brand pages cite 84 days, 90 days, or 12 to 24 weeks.

1. 84 days

   CurrentBody’s 31-person study measured out to 84 days. The summary does not describe a sham helmet.

2. 90 days

   RedLight Innovation’s challenge is about 13 weeks, on the early side of the longer trials. Its own feature follows six people.

3. 12–24 weeks

   Beauty Pie’s footnote puts the studies it cites in this range. The brand says those studies were not of this cap.

4. 16–26 weeks

   The stronger sham-controlled trials counted hairs over a few months, not over a weekend.

5. After 20 weeks

   Perez and colleagues found a larger average difference in studies longer than 20 weeks (SMD 1.44) than in shorter ones (SMD 1.14).

6. 6 months

   A 2024 trial compared a 633 nm light protocol with 5% minoxidil in men. Both groups gained density. The difference between them was not significant.

Common questions

What is the best red light therapy hat for hair growth in the UK?

The RedLight Innovation Hat Pro, at £372. It lists 125 diodes at 615, 635 and 650 nm, plus 450 nm blue. Coverage is about 80%, the panel is 500 mW, the fit is 54–62 cm, and a session is 15 minutes.

Do these hats use near-infrared light?

No. The Hat Pro product page lists red plus 450 nm blue. CurrentBody lists 620–660 nm red. HigherDOSE lists 650 nm. Beauty Pie lists 655 nm.

Are red light therapy hats available on the NHS?

No. You buy them yourself. The NHS hair-loss page talks about minoxidil and, for men, finasteride. It does not offer a red light cap.

How long does red light therapy take to work?

Research suggests red light may help with pattern hair loss when people use it consistently over months. The better studies count hairs at about 16 to 26 weeks. Some people see no change.

Can I use a hat with minoxidil?

The trials do not agree that adding light to minoxidil beats minoxidil alone. Minoxidil is a medicine, and the NHS says it only works while you use it. Ask a GP or pharmacist before you combine them.

What does the 90-day money-back guarantee require?

The suitability quiz, progress photos and a review by the brand’s trichologist. The warranty is one year if you register within 7 days.

Related questions

• Is the RedLight Hat Pro red and near-infrared?
• What wavelength should a hair hat use?
• Does red light therapy regrow hair?
• Are hair growth devices available on the NHS?
• Does red light work as well as minoxidil?
• Does minoxidil work for women?

Sources

1. RedLight Hat Pro product page — £372, 615, 635 and 650 nm plus 450 nm blue, 125 diodes, 500 mW, about 80% coverage, 15 minutes, 54–62 cm.
2. CurrentBody Skin LED Hair Growth Helmet — £649.99, 120 red LEDs, 620–660 nm, 10 minutes, two sizes.
3. HigherDOSE Red Light Hat, UK page — £449, 120 LEDs, 650 nm, 5 mW/cm², 10 minutes.
4. Beauty Pie All Systems Grow LED cap — £332, 125 LEDs, 655 nm, 20 mW/cm² at the surface.
5. NHS: Hair loss
6. Liu and colleagues, 2019 meta-analysis — Sham-controlled trials of low-level laser therapy and hair density.
7. RedLight Innovation: the 90-day study — The brand’s own write-up of 6 volunteers, 15 minutes a day, finishing August 2024.
8. RedLight Innovation: 90-day money-back guarantee — Suitability quiz, progress photos and a trichologist review.
9. RedLight Innovation warranty — 1-year warranty if you register within 7 days.
10. RedLight Innovation shipping — Free UK next-day delivery from Kent.
11. RedLight Innovation trichologist consultation — Free consultation. The brand lists Celestine Gitau, Institute of Trichologists no. 583.
12. RedLight Innovation customer reviews — Customer reviews on the brand’s own website.
13. RedLight Innovation contact — Email and WhatsApp support.
14. RedLight Innovation hair check page — The brand’s comparison: minoxidil £900 and prescriptions £720 over three years, against £372 once.

Keep reading

• RedLight Innovation Hat Pro: our best overall pick Our best overall red light hat. The Hat Pro is £372, with TripleWave at 615, 635 and 650 nm, about 80% coverage, a washable cap and a 54–62 cm fit.
• How to choose a red light therapy hat How to choose a red light therapy hat in the UK: wavelength, dose, coverage, fit and what kind of evidence the brand is actually showing you.
• Does red light therapy work for hair loss? Does red light therapy work for hair loss? What sham-controlled trials and meta-analyses found for pattern hair loss, and what they did not study.
• Devices for hair growth UK guides to red light hats, laser caps, LED combs, microneedling and scalp massagers, with the evidence kept separate from the advert.
• Red light therapy or minoxidil Red light therapy or minoxidil: what a 2024 trial found when the two were compared, and what happened when a laser comb was added to minoxidil.
• Does minoxidil work? Minoxidil is an NHS treatment for pattern hair loss. It does not work for everyone, and it only works while you keep using it.