RedLight Innovation Hat Pro: our best overall pick

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

On this page

On this page

1. What light does the Hat Pro use?
2. What comes in the box?
3. How much does the Hat Pro cost, and what is included?
4. What results can you expect?
5. When should you buy something else?
6. Questions
7. Sources

Jump to our top pick

Best overall

RedLight Innovation Hat Pro

£372

• TripleWave
• 80% coverage
• £372

Our top pick. TripleWave: 125 diodes at 615, 635 and 650 nm, plus 450 nm blue. A washable 54–62 cm cap, about 80% coverage, a 500 mW panel, 15 minutes, £372.

Key specs

Price

£372

Availability

Available. Checked October 2026

Form

Hat with a lift-out panel

Wavelengths

615, 635, 650 nm red, plus 450 nm blue

Light source

LED

Count

125 diodes

Output

500 mW panel

Session

15 minutes

Coverage

About 80%

Fit

54–62 cm

One-off price, or 3 interest-free Shop Pay payments. No subscription. Specs from the RedLight Innovation product page. Source

View the Hat Pro

What light does the Hat Pro use?

The product page lists 125 diodes at 615, 635 and 650 nm, plus 450 nm blue.¹ There is no near-infrared. The emitters are LEDs, not lasers.

Coverage on that page is about 80% of the scalp. Panel output is 500 mW. A session is 15 minutes.

What comes in the box?

A soft everyday cap. The panel lifts out, so the cap is washable. The fit is 54–62 cm. The controller is USB-C and rechargeable, with a 15-minute timer, and the box includes a travel case. It runs cool.

¹ Specs from the RedLight Innovation product page.

How much does the Hat Pro cost, and what is included?

£372 once, or 3 interest-free payments via Shop Pay. No subscription. The men’s hair-check page lists minoxidil at £25 a month, or £900 over three years, and prescriptions at £20 a month, or £720.

The 90-day money-back offer is conditional. It needs the suitability quiz, progress photos and a review by the brand’s trichologist. The warranty is one year if you register within 7 days. Delivery is free UK next-day from Kent. Support is by email and WhatsApp. Free consultation with Celestine Gitau, Institute of Trichologists no. 583, on the consultation page.

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.

What results can you expect?

The brand’s own page describes a 90-day series of six volunteers. It does not describe a control group. It is not the same evidence as the sham-controlled studies.

Research suggests red light may help with pattern hair loss when people use it consistently over several months. The stronger studies compare a real device with a sham and count hairs at about 16 to 26 weeks. They do not all agree on the size of the change, and they were not run on this hat. Wavelengths around 630–680 nm overlap 635 and 650 nm. The detail is on does red light therapy work.

The quotes above are customer reviews on the brand’s own website. Some of them also mention minoxidil.

If the loss is sudden or patchy, see a GP before you buy. The NHS asks for that conversation before a commercial clinic. A hat does not replace a conversation about minoxidil where that medicine is appropriate. See red light or minoxidil.

When should you buy something else?

Choose the CurrentBody helmet if you want a rigid full-head shape at £649.99. Its UK page listed the helmet as out of stock when checked on 18 October 2026. Choose Beauty Pie if £332 is the budget. Its UK page listed the cap as out of stock when checked in October 2026. Choose HigherDOSE if a cordless 10-minute cap matters more than a published fit range.

Product photos

Common questions

Is the RedLight Hat Pro red and near-infrared?

It lists 615, 635 and 650 nm red, plus 450 nm blue. It does not list near-infrared.

Does it cover the whole scalp?

The product page says about 80% of the scalp in a session. It is a soft cap, not a rigid helmet. Panel output is 500 mW.

How much does it cost, and what is included?

£372, as a one-off purchase, or 3 interest-free payments via Shop Pay. The 90-day money-back offer needs the suitability quiz, progress photos and a trichologist review. The warranty is one year if you register within 7 days. Delivery is free UK next-day from Kent.

What does the brand’s own series show?

The brand’s page describes six volunteers over 90 days and does not describe a control group. Broader red-light research is summarised on the evidence page. This review does not treat the hat as a medical treatment.

Related questions

• How much is the CurrentBody hair helmet in the UK?
• How much is the HigherDOSE red light hat in the UK?
• How much is the Beauty Pie LED hair cap?
• What wavelength should a hair hat use?
• Does red light therapy regrow hair?

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, Shop Pay.
2. How it works
3. RedLight Innovation: the 90-day study — The brand’s own write-up of 6 volunteers, 15 minutes a day, finishing August 2024. Microscopy before and at day 90. 0 adverse reactions reported.
4. RedLight Innovation: 90-day money-back guarantee — Suitability quiz, progress photos and a trichologist review.
5. RedLight Innovation warranty — 1-year warranty if you register within 7 days.
6. RedLight Innovation shipping — Free UK next-day delivery from Kent.
7. RedLight Innovation trichologist consultation — Free consultation. The brand lists Celestine Gitau, Institute of Trichologists no. 583.
8. RedLight Innovation hair check page — The brand’s comparison: minoxidil £25 a month (£900 over three years) and prescriptions £20 a month (£720).
9. RedLight Innovation customer reviews — Customer reviews on the brand’s own website.
10. RedLight Innovation contact — Email and WhatsApp support.
11. Perez and colleagues, laser and LED therapy in alopecia
12. NHS: Hair loss

Keep reading

• CurrentBody LED Hair Growth Helmet review CurrentBody LED Hair Growth Helmet review: £649.99, 120 red LEDs at 620–660 nm, two UK sizes, and a 31-person study summary.
• HigherDOSE Red Light Hat review HigherDOSE Red Light Hat review: £449, cordless, 120 LEDs at 650 nm and 5 mW/cm², with a 10-minute session and a 28-person user survey.
• Beauty Pie All Systems Grow LED cap review Beauty Pie All Systems Grow LED cap review: £332, 125 LEDs at 655 nm, 20 mW/cm², and a footnote that this device was not independently tested.
• 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.