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The Last Light Of The Day

The Last Light Of The Day

The Redeem Beam was built as a portable red light recovery panel. But the reason I keep mine beside my bed has a lot more to do with sleep.

For years, I couldn't sleep. I don't mean the occasional rough night. I mean the kind of insomnia where you're exhausted all day and somehow wide awake the minute your head hits the pillow. My body was tired. My brain wasn't.

At the time I was still in corporate America, working as an engineer, and I had spent years getting very good at pushing through things. Stress, exhaustion, health problems, bad sleep. Get up, go to work, do it again. I jokingly call myself a former corporate warrior now, but that really is what it felt like. My body could be begging me to stop and my brain would just keep going.

By the time I finally left that life, I didn't need another productivity hack. I needed to recover. And red light became a surprisingly big part of that recovery.

I didn't start using red light because it was trendy

I came to most of these wellness tools out of desperation, trying things I probably would have rolled my eyes at a few years earlier. Red light was one of the things that stuck.

I used it for my skin. I used it when I was sore. I used it when my body felt inflamed and exhausted. And somewhere along the way, I started using it at night.

That's when I noticed something: I slept better.

It became the signal at the end of my day. Bright lights off, red light on. Everything gets quieter. Eventually the red light goes off too, and then it's dark, and then I'm asleep.

I wasn't thinking about photobiomodulation or circadian biology back then. I just knew I liked how I felt when I did it. Years later, when I started Redeem Recover and began digging into the research behind the products I was sourcing, I found studies on red light, near-infrared light and sleep. That rabbit hole got very interesting.

Apparently, I wasn't imagining it

There's now enough research on photobiomodulation and sleep that researchers have pooled the randomized controlled trials. A 2026 systematic review and meta-analysis looked at five randomized controlled trials covering 240 people, and found that red and near-infrared photobiomodulation was associated with a statistically significant improvement in sleep-quality scores compared with sham treatment.

The researchers were careful to say this is still a developing area of science. The studies are relatively small, and they haven't all used the same wavelengths, doses or devices. Fair enough. But this is no longer one random study somebody found on the internet. We have multiple controlled human trials pointing in the same direction.

And some of the wavelengths in those trials caught my attention immediately, because they're remarkably close to the ones inside the Redeem Beam.

660nm

The Beam uses 660nm red light. One of the earlier sleep studies used an average wavelength of 658nm.

In that study, twenty elite female basketball players were randomly assigned to get either 30 minutes of whole-body red light every night or a placebo condition, for 14 days. The red-light group showed significantly greater improvements in sleep-quality scores, and they also improved on sleep latency (how long it took them to fall asleep), sleep duration and other measures.

Is twenty athletes a gigantic clinical trial? Of course not. But 658nm is awfully interesting to me when the little panel on my nightstand is putting out 660nm.

And then there's the other half of the Beam.

850nm

The Beam isn't only red light. It also puts out 850nm near-infrared light, which you can't see with your eyes but which penetrates deeper into tissue than visible red light. The research here may be even more interesting.

In 2026, researchers published a randomized clinical trial involving older adults with insomnia symptoms. One of the treatments they studied was 850nm near-infrared photobiomodulation applied to the neck every night for two weeks. That's the exact near-infrared wavelength in the Beam.

Participants receiving NIR reported improvements in sleep quality and an increase in subjective sleep duration. The objective sleep-tracker and melatonin measurements didn't show significant changes, so it wasn't a perfect across-the-board result. Still, it's another controlled human study suggesting near-infrared photobiomodulation may have a role in sleep.

There's more. A randomized sham-controlled study out of the University of Arizona tested a device delivering 660nm, 740nm, 810nm and 870nm red and near-infrared light to the neck before bed. The active group reported improvements in relaxation, sleep quality and how refreshed they felt the next day, and within that group, sleep latency dropped by about six minutes. The objective sleep measurements didn't significantly differ between the active and sham groups, so I'm not going to turn it into a claim the researchers didn't make. But their conclusion was pretty straightforward: red and near-infrared exposure to the head and neck before bed may have potential benefits for sleep and daytime function.

So what could light possibly have to do with sleep?

This is the part I found super interesting...

We tend to think of sleep as something that happens in the brain, but sleep is a whole-body process. Photobiomodulation is being studied for its effects on cellular energy production, blood flow, nitric oxide, inflammation and nervous-system activity. Researchers have proposed several possible pathways through which red and near-infrared light could matter for sleep, though we don't yet know exactly which mechanisms are responsible for the effects being observed.

There's a simpler piece of this too. Light itself tells your body what time it is.

Our days didn't always have an on switch we could leave on until midnight. Before electric lights, daylight changed around us from morning to night. We didn't need to wake up and farm for the body to notice. Light reaching our eyes helps set the clock in our brain that times sleep and other daily rhythms.

One small study made that contrast easy to see. Eight adults spent a week in their usual electric-lit lives, then a week camping with natural light and campfires. After the camping week, their internal clock markers had shifted about two hours earlier. Their melatonin began to rise around sunset and fell around sunrise. That doesn't mean everyone should sleep at sundown. It does show how strongly the light around us can affect our sense of night.

Light after dark matters, too. In a lab study, ordinary room light before bed delayed the rise of melatonin compared with very dim light and shortened its nightly duration by about 90 minutes. Another small experiment found that reading on a light-emitting e-reader for four hours before bed, over five evenings, delayed the body's melatonin timing compared with reading a printed book.

That's why I think about the whole evening, not only the red light I turn on. I lower the overhead lights and let the day get quieter. The research on daylight and electric light helps explain why that change in my routine might matter. It does not prove that my Redeem Beam resets my body clock or treats insomnia. For me, it's one way to mark the end of the day.

At day's end, natural light grows dimmer and warmer. Bright, blue-rich electric light after dark can tell the body a different story. That doesn't mean the Beam is the same as sunset.

I love the simplicity of that. Not because I think anyone needs another complicated sleep protocol. Because I think most of us need the opposite.

My nervous system didn't need another thing to do

This is probably the biggest lesson I took out of corporate burnout. For years, everything in my life was stimulation. My alarm, coffee, traffic, meetings, deadlines, emails, screens, stress, more screens. Then I'd get into bed and wonder why my body couldn't instantly switch itself off.

I spent years thinking something was wrong with me because I couldn't sleep normally. Looking back, I'm amazed my nervous system slept at all.

So I don't use the Beam at night because I believe one device magically fixes insomnia. I use it because it's become part of how I tell my body: we're done for today.

I think ritual matters more than we give it credit for.

That's why I wanted the Beam to be cordless

This sounds like such a small thing. It isn't.

I also own the giant red light panels. They're powerful and impressive, and mine sits in another room. Because at 10:30 at night, I was not going to go stand in front of a giant panel plugged into a wall for 20 minutes.

The Beam lives where I actually use it: next to my bed. It's only about 6.2" x 3" x 0.53" and 0.7 pounds, but inside are 90 LEDs producing 660nm red and 850nm near-infrared light, with output over 84 mW/cm². And it's completely cordless. One charge gives you up to about 80 minutes of use.

So I can use it on my face and neck while I'm in bed. I can put it on my shoulder if that's what hurts. I can use it while I'm stretching, or throw it in my bag when I travel. And when I'm done, I'm done. No getting back up, no bright bathroom light, no checking my phone, no plugging something back in across the room.

That convenience sounds insignificant until you're trying to build a habit. The best wellness tool isn't the one with the longest spec sheet. It's the one you actually use.

How I use the Beam for sleep

My routine is ridiculously simple. About 30 minutes before bed, the overhead lights go off and the Beam comes on. It has an automatic 15-minute timer, and after red comes black. Actual darkness.

I'm not suggesting anyone sleep with a red light shining in their face for eight hours. The red light is my transition. It's my last light of the day.

If you can't sleep, maybe you should try this

Insomnia can make you desperate. I know. And I'm not going to tell you a $129 red light is going to cure it. Persistent insomnia deserves proper medical attention, and there are evidence-based treatments for it.

The science is developing, and it's developing in a direction that looks remarkably familiar to something I stumbled into during my own recovery years ago.

Red light helped me draw a line between the day and the night. It gave my body something other than another screen, another pill, another task or another thing to think about. Eventually it became something I didn't want to sleep without.

That's a huge part of why the Redeem Beam exists. It isn't just a skin device. It isn't just a recovery device. For me, it's the last light of the day.

Redeem your recovery. Redeem your sleep. Redeem your routine.

Disclaimer: I'm sharing my personal experience and research I find interesting, not giving medical advice. The Redeem Beam is not intended to diagnose, treat, cure or prevent insomnia or any other disease. Research into photobiomodulation and sleep is still developing, and individual results vary. If you're experiencing persistent insomnia or another sleep disorder, please talk with a qualified healthcare professional.

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