Discover the power of red light therapy

Halcyon is simple home-use deep red light device designed to fit into your routine.

Research shows that exposure to red light helps to support the functioning of mitochondria in our eyes.

670 to 675 nm deep red

A precise wavelength range used in photobiomodulation research. Designed for short, consistent sessions at home.

670 to 675 nm deep red

A precise wavelength range used in photobiomodulation research. Designed for short, consistent sessions at home.

Three minutes, auto timed

Press once to start. A gentle ramp up, then a full session with automatic switch off.

Three minutes, auto timed

Press once to start. A gentle ramp up, then a full session with automatic switch off.

Made for a weekly morning routine

Keep it simple. One short session about once a week, ideally in the morning.

Made for a weekly morning routine

Keep it simple. One short session about once a week, ideally in the morning.

Comfort first design

Low brightness output with no flicker, rechargeable via USB C, built to be easy to live with.

Comfort first design

Low brightness output with no flicker, rechargeable via USB C, built to be easy to live with.

Your Halcyon routine is beautifully simple.

Step 01

Charge

Top up with USB C so it’s always ready.

Step 02

Get comfortable

Position the device and relax. Use with eyes open or closed.

Step 03

Press to start

The first 3 seconds are dimmer, then the session runs for 3 minutes and switches off automatically

Step 01

Charge

Top up with USB C so it’s always ready.

Step 02

Get comfortable

Position the device and relax. Use with eyes open or closed.

Step 03

Press to start

The first 3 seconds are dimmer, then the session runs for 3 minutes and switches off automatically

Simple to use, precise optical delivery.

Halcyon focuses on one job: delivering deep red light at a measured output, in a routine that’s easy to keep. No complicated setup. No long sessions. Just consistency.

Key Specifications

670 - 675nm (deep red)

Wavelength

Light Output

8 wW

3 minutes, auto off

Session Length

None

Flicker

USB C rechargeable LiPo battery (120 mAh)

Charging

Measured Output

Designed around a consistent, low brightness session

One button simplicity

No app, no pairing, no settings to manage

Use C rechargeable

Charge with the cable you already use

Modern life is visually demanding

Your retina is one of the most energy hungry tissues in the body. As we age, cellular energy systems can become less efficient. Halcyon is designed as a small habit that fits real life: deep red light, delivered in a controlled session.

What if three minutes was enough?

The best routine is the one you actually keep. Halcyon is built around a short session, a simple schedule, and a calm moment in the morning.

The science, in plain terms

Minutes

suggested session time

deep red light

Photobiomodulation studies how red to near infrared light (roughly 600 to 1000 nm) can interact with cellular energy processes. Research suggests these wavelengths can be absorbed by cytochrome c oxidase, a key enzyme in mitochondrial respiration, which can influence ATP production. Halcyon delivers 670 to 675 nm deep red light in a simple, timed session.

Research is ongoing. Halcyon is not a medical device and is not intended to diagnose, treat, cure, or prevent disease.

Optician Recommended

Your eyes deserve better.

Halcyon Red

£99.99

£129

Daily red-light therapy device

Designed in the United Kingdom
Sustainable Packaging
Free Shipping
Secure Payment

Frequently
asked questions.

Contact Support

Eyes open or closed?

Either works. You can use it eyes open or closed.

How often should I use it?

A weekly three minute session is the baseline routine. More frequent use is not positioned as harmful, but outcomes are not guaranteed.

When should I use it?

Morning use is recommended. Later sessions are described as offering little benefit.

Can I wear contact lenses?

Standard contact lenses are considered transparent to deep red light.

Does it treat AMD or glaucoma?

It is not a medical device. There is insufficient evidence that deep red light prevents or reverses dry AMD, and there is no clinical evidence it improves glaucoma.

Eyes open or closed?

Either works. You can use it eyes open or closed.

How often should I use it?

A weekly three minute session is the baseline routine. More frequent use is not positioned as harmful, but outcomes are not guaranteed.

When should I use it?

Morning use is recommended. Later sessions are described as offering little benefit.

Can I wear contact lenses?

Standard contact lenses are considered transparent to deep red light.

Does it treat AMD or glaucoma?

It is not a medical device. There is insufficient evidence that deep red light prevents or reverses dry AMD, and there is no clinical evidence it improves glaucoma.

Eyes open or closed?

Either works. You can use it eyes open or closed.

How often should I use it?

A weekly three minute session is the baseline routine. More frequent use is not positioned as harmful, but outcomes are not guaranteed.

When should I use it?

Morning use is recommended. Later sessions are described as offering little benefit.

Can I wear contact lenses?

Standard contact lenses are considered transparent to deep red light.

Does it treat AMD or glaucoma?

It is not a medical device. There is insufficient evidence that deep red light prevents or reverses dry AMD, and there is no clinical evidence it improves glaucoma.

Eyes open or closed?

Either works. You can use it eyes open or closed.

How often should I use it?

A weekly three minute session is the baseline routine. More frequent use is not positioned as harmful, but outcomes are not guaranteed.

When should I use it?

Morning use is recommended. Later sessions are described as offering little benefit.

Can I wear contact lenses?

Standard contact lenses are considered transparent to deep red light.

Does it treat AMD or glaucoma?

It is not a medical device. There is insufficient evidence that deep red light prevents or reverses dry AMD, and there is no clinical evidence it improves glaucoma.

Discover the power of red light therapy

Research shows that exposure to red light helps to support the functioning of mitochondria in our eyes.

Research shows that exposure to red light helps to support the functioning of mitochondria in our eyes.

670 to 675 nm deep red

670 to 675 nm deep red

Three minutes, auto timed

Three minutes, auto timed

Made for a weekly morning routine

Made for a weekly morning routine

Comfort first design

Comfort first design

Your Halcyon routine is beautifully simple.

Your Halcyon routine is beautifully simple.

Charge

Get comfortable

Press to start

Charge

Get comfortable

Press to start

Simple to use, precise optical delivery.

Modern life is visually demanding

What if three minutes was enough?

The science, in plain terms

Your eyes deserve better.

Halcyon Red

Frequently asked questions.

Frequently
asked questions.