Green-light therapy means resting under a narrow band of green light, near 520 nm, instead of regular white light. For many people with migraine, it's a gentler light that lets you read, rest, and move around without sitting in total darkness.
During a migraine, ordinary light can make the simplest task feel impossible. A pitch-black room helps, but it also leaves you stuck. Green light gives you a middle ground.
We're Stephenie and Neal, the founders of Family Tree Remedies. Stephenie lived with 17 or more migraine days a month for years, and green light is now part of our routine every night and during attacks. This guide shows you how to set it up the right way.
Green-Light Quick Start
- Use a purpose-built green light near 520 nm.
- Turn off overhead lights, lamps, and screens.
- Point the light at your book, desk, or a nearby wall, not into your eyes. Keep it off to the side, in your peripheral vision.
- Start at the lowest comfortable brightness.
- Stay with it for at least 30 minutes.
- Adjust until it feels easy on your eyes.
Read, rest, stretch, journal, or practice slow breathing while you're there.
What Is Green-Light Therapy?
Green-light therapy uses a narrow band of green light to create a calmer space for a light-sensitive brain. It's different from an ordinary green party bulb or a smart bulb set to green. Those can give off a wide mix of colors, uneven light, or flicker you can't see but may still feel.
A purpose-built light gives you control over the color, brightness, flicker, and direction of the light.
What Does the Research Show?
Research on green light and migraine is young, but it's growing fast, and the early results are encouraging.
Green bothers migraine brains the least. In a 2016 Harvard Medical School study, blue, amber, and red light all made migraine headaches worse. A narrow band of green light was the only color that didn't, and at low brightness it even eased pain by about 20%. A newer study from Arizona State University, published in Cephalalgia, found the same pattern: green-enriched white light caused the least discomfort, while blue and cyan light made discomfort worse.
Daily green light and headache days. In a University of Arizona study, people used green light at home for 1 to 2 hours a day for 10 weeks. Their headache days dropped by about 60%. People with chronic migraine went from about 22 headache days a month to about 9.
Green light during an attack. In a 2023 study in Frontiers in Neurology, 181 people used a narrow-band green lamp for 2 hours during their migraine attacks. Across 3,232 attacks:
- Headache improved in 55% of attacks.
- Light sensitivity improved in 53% of attacks.
- For people who responded well, headache improved in 82% of their attacks.
The study didn't have a blinded control group, so the researchers call these results promising, not proof.
How it might work. In a 2017 study published in Pain, green light lowered pain sensitivity in rats, and the effect worked through the eyes. When the rats' eyes were covered, the effect disappeared. It seemed to switch on the body's own pain-calming pathways. That was animal research, so it helps explain how green light might work but doesn't prove the same result in people. A small pilot study in people with fibromyalgia, a chronic pain condition, also found average pain scores dropped from 8.4 to 4.9 out of 10 with green light compared with white light.
What this means for you: green light may be easier on light-sensitive eyes, and it may connect to how the brain handles pain. Researchers want larger studies. But one benefit shows up right away: enough light to function, without the harsh glare of regular bulbs.
How to Set Up Green-Light Therapy, Step by Step
Step 1: Choose the Right Green Light
Green is a range of colors, not one color. Migraine lights focus on a narrow slice of it, near 520 nm. When you compare lights, look for:
- A clearly listed wavelength, not just the word "green"
- A narrow band of color
- Flicker-free LEDs
- Adjustable brightness
- A way to aim the light
If a product only says "green" without naming its wavelength, it may not give you the same experience.
Step 2: Turn Down Competing Light
Green light works best when it's the main light in the room. Before you start:
- Turn off overhead lights and extra lamps.
- Close the curtains or blinds.
- Dim or put away screens.
- Cover small, bright lights, like the glow on a charger, if they bother you.
The room doesn't need to be pitch-black. It just needs green to be the star. If you must use your phone, turn the brightness down and switch on its warmest display setting.
Step 3: Position the Light Correctly
The light should brighten your space, not shine into your eyes. Keep it off to the side, in your peripheral vision.
- Clip it to a book, headboard, shelf, or desk.
- Aim it at what you want to see.
- Keep the LEDs out of your direct line of sight.
- Watch for glare off glossy pages or shiny surfaces.
For reading, aim the light at the page. For resting, bounce it off a nearby wall for a softer glow.
Step 4: Start Low on Brightness
Brighter isn't better. Start at the lowest setting that lets you see, and give your eyes a few minutes to adjust.
Turn it up if you can't see your book, you're straining, or the room feels too dark to relax.
Turn it down if you notice glare, squinting, eye strain, or more discomfort.
The best setting is the one that feels easy for you.
Step 5: Choose Your Session Length
Start with at least 30 minutes. If it feels good, try longer sessions. The migraine studies used 1 to 2 hours a day.
|
Level |
Session length |
|---|---|
|
Getting started |
30 minutes |
|
Regular routine |
30 to 90 minutes |
|
Longer sessions |
Up to 2 hours, if comfortable |
Showing up every day matters more than one marathon session. Pick a time that fits your life, like the last hour of your evening.
Step 6: Pair It With Something Calming
Green-light time should feel easy. Try it while you:
- Read a printed book
- Listen to music or an audiobook
- Practice slow breathing or meditation
- Stretch gently
- Journal
- Wind down for sleep
Skip anything that adds bright light or strains your eyes.
When Should You Use Green Light?
Green light isn't only for attacks. Think of it as one more way to keep room in your bucket.
- Every day: a steady evening session while you read or wind down. This is how the 10-week Arizona study used it.
- On light-sensitive days: swap out harsh room lights when ordinary light feels like too much.
- During an attack: if it feels comfortable, use it instead of total darkness, so you can still get a drink or read a page.
- After an attack: use gentle light while you rest and ease back into your day.
- When traveling: a clip-on light turns a bright hotel room into a calmer space.
Common Green-Light Mistakes
Using an ordinary green bulb. A party bulb may look green without giving you a narrow band of color or flicker-free light.
Leaving other lights on. Overhead lights and screens can drown out the green.
Turning the brightness all the way up. Start low and adjust.
Staring at the LEDs. Keep the light off to the side, lighting your space.
Expecting magic on day one. Some people feel more comfortable in the first session. Others need weeks of steady use to decide.
Ignoring the rest of the room. Glare, shiny surfaces, and an uncomfortable chair can spoil any light. Set up the whole space.
How to Track Your Experience
A simple diary helps you see whether green light belongs in your routine. After each session, jot down:
- Date, time, and session length
- Brightness setting and activity
- Light sensitivity before and after
- Head pain before and after
- Other symptoms, and any medicine you used
Look for patterns over a few weeks, not one session. Our free guide, Raise Your Migraine Threshold, has daily check-in and weekly review pages that make this easy.
Why Did We Make Our Own Green Light?
We made Aloe because we needed it ourselves. We use our Aloe lights every night, and we reach for them during migraine attacks.
Before green light, a migraine meant sitting in total darkness. Now we can read, move around the house, or get a drink of water without bright light making things worse. That small bit of normal matters a lot when you're in the middle of an attack.
When we first looked for a green light, the lamp used in the studies cost more than most families can spend. The cheap green bulbs we tried glowed in a wide band of colors, and some had a flicker we could feel. So we wrote a list of what a migraine light should have and took it to manufacturers. That list became the Aloe Dual Lamp and the Aloe Clip-On Light.
Everyone's migraines are different. We built Aloe to give you a gentle, usable light when ordinary light feels like too much.
How Does Aloe Measure Up?
Here is how Aloe lines up with the checklist from Step 1.
|
What to look for |
What Aloe gives you |
|---|---|
|
Narrow-band green |
520 nm green LEDs, the same part of the green range studied in migraine research |
|
No flicker |
Flicker-free LEDs |
|
Brightness you control |
Dual Lamp: tap the touch base to switch between white and green, and hold it to dim. Clip-On: one button cycles through 3 brightness levels |
|
Light where you need it |
Clip-On has a flexible neck that turns 360 degrees |
|
Easy charging |
USB-C charging in about 1 hour, with 8 to 32 hours of light per charge |
|
Goes where you go |
The Clip-On attaches to a book, headboard, desk, or shelf |
|
Try it without risk |
30-day money-back guarantee |
|
Built to last |
Two-year warranty for manufacturing defects |
|
Easy to order |
Free shipping |
|
Real people to help |
Live chat with our team |
Green-Light Therapy FAQ
Can I use any green bulb for green-light therapy?
Most green bulbs are not built for it. A party bulb or smart bulb can look green while giving off a wide mix of colors, and some flicker. Look for a light that lists its wavelength, uses flicker-free LEDs, and lets you change the brightness.
How long should a green-light session last?
Start with at least 30 minutes. The University of Arizona study used one to two hours a day. Pick a length that feels good and fits your day, and stick with it.
Does the room need to be completely dark?
No. Turn off or dim the other lights so green is the main light in the room. You should still feel safe moving around.
Should I look directly at the green light?
No. Point the light at your book, desk, or a nearby wall. Keep the LEDs out of your direct line of sight.
Can I use my phone during a session?
You can, but your screen adds other colors of light. A screen-free activity works best. If you need your phone, turn the brightness down and use its warmest display setting.
Can I use green light during a migraine?
Yes, many people use it during light-sensitive moments, and so do we. Start on the lowest setting and turn it off if you feel worse.
How quickly will I notice a difference?
It depends on the person. Many people feel the room is more comfortable during the first session. Bigger changes over weeks take daily use and tracking. The research so far is promising, and larger studies are still underway.
Ready to Build Your Green-Light Routine?
A green-light routine does not have to be complicated. Use a true 520 nm green light, turn off competing light, aim it away from your eyes, start low, and give yourself time to settle in.
Aloe comes with a 30-day money-back guarantee, a two-year warranty for manufacturing defects, and free shipping. If you have a question, our team is on live chat to help.
You don't have to figure this out alone. Join our Migraine Family on Facebook to swap tips with people who get it.
Green-light therapy is a complementary wellness practice. It is not a replacement for medical care. Stop using the light if it makes your discomfort worse. Talk with your doctor about new or changing migraine symptoms. Get emergency care right away for a sudden, severe headache (the worst of your life), a headache with weakness, numbness, trouble speaking, confusion, vision loss, fever with a stiff neck, or a headache after a head injury.
Sources
- Harvard Medical School (2016). Green light may ease migraine pain
- Arizona State University (2026). ASU research leads to migraine-easing lighting
- University of Arizona. Green light therapy shown to reduce migraine frequency, intensity
- MDedge. Green light puts a stop to migraine
- Lipton RB, et al. (2023). Narrow-band green light for migraine attacks. Frontiers in Neurology
- Ibrahim MM, et al. (2017). Long-lasting antinociceptive effects of green light in acute and chronic pain in rats. Pain
- University of Arizona Health Sciences. Casting a green light on fibromyalgia