Red Light Therapy Cap for Scalp Care — 110 LEDs at 660nm & 850nm, Continuous or Pulsed, USB Powered

Ten minutes under the cap, and the rest of your evening carries on around it.

A soft baseball cap with 110 red and near-infrared LEDs set into the lining. You put it on, choose a mode, and get on with whatever you were doing — the whole point of the format is that it asks for nothing except that you wear a hat.

The experience

The lining is polyester cotton over a neoprene-style layer, so it sits like an ordinary cap rather than a piece of equipment. The LEDs give off a low warmth you notice after a couple of minutes and nothing more dramatic than that. It runs off any 5V USB source, which means a power bank in your pocket and no cable tethering you to a wall.

The details

• 110 LEDs — spread across the lining for even coverage rather than a hot spot at the crown
• 660nm and 850nm — visible red and near-infrared, the two wavelengths this category is built around
• Two modes — continuous, or pulsed at 10Hz
• Three intensity levels — 2.7, 4.3 and 9, so you can start low
• 5V USB — mains adapter included, and it runs happily off a power bank
• Five colours — black, white, off-white, dark blue and grey
• 54 g — light enough to forget you're wearing it

How to use it

On dry hair, parted as you normally wear it — the light needs to reach the scalp, not sit on a wet ponytail. Start at the lowest intensity in continuous mode for around ten minutes and see how it feels before going higher. Three or four sessions a week is a sensible rhythm; daily use offers nothing extra. Keep it plugged into the adapter or a power bank while you wear it, and wipe the lining with a dry cloth afterwards.

What it is, and what it isn't

This is a consumer red-light device sold for scalp care and comfort. Red light therapy is an active research area and results in published studies vary widely, so we're not going to tell you a cap will regrow your hair — it might do nothing of the sort, and no cosmetic device can promise that. If you are worried about shedding or thinning, see a dermatologist first; a diagnosis is worth more than any device, and some causes of hair loss have treatments that actually work.

Before you switch it on

Do not look directly into the LEDs, and don't let children play with it. Not for use if you have a photosensitivity disorder, or if you take medication that increases light sensitivity — some antibiotics, retinoids and other drugs do, so check with your pharmacist. Not for use on a broken, sunburnt or freshly treated scalp, or over a skin lesion. Speak to your doctor first if you are pregnant, have a history of skin cancer, or are being treated for any scalp condition. Stop if you get headache, dizziness or persistent redness. Keep the cap and adapter dry.

What ships to you

• Red light cap × 1 — 110 LEDs, approx. 54 g
• USB cable × 1
• Power adapter × 1
• Shipping weight: approx. 1 lb (470 g)
• Free worldwide shipping · 30-day returns on unused items

Questions people ask

What do 660nm and 850nm mean?
They're wavelengths. 660nm is visible red and stays nearer the surface; 850nm is near-infrared, which you can't see and which penetrates a little further. Devices in this category typically combine the two.

Will this regrow my hair?
We can't tell you it will. The evidence for red light and hair is mixed, and this is a cosmetic device, not a medical one. Anyone promising regrowth from a cap is overselling it.

Continuous or pulsed — which should I use?
Start with continuous at the lowest intensity. Pulsed at 10Hz is the alternative if you prefer the sensation; neither is established as better.

How long is a session, and how often?
About ten minutes, three or four times a week. More is not better.

Does my hair need to be dry?
Yes. Wet hair sits flat over the scalp and blocks the light.

Can I use it with a power bank?
Yes — any 5V power bank works, and it's the easiest way to move around during a session.

Is it safe for my eyes?
Don't look directly at the LEDs. Worn normally the light points at your scalp, not your eyes.

Can I wear it outside?
It looks like an ordinary cap, so yes — just keep it out of the rain.

A cosmetic light-emitting device intended for scalp care and comfort. Not a medical device. Not intended to diagnose, treat, cure or prevent hair loss or any other condition, and individual results vary. Consult a healthcare professional about hair loss before starting any device.