If you live in the Pacific Northwest, you already have a deeply personal relationship with light deprivation. From October through June, we operate in varying shades of grey, surviving on coffee, flannel, and the faint memory of what the sun felt like. Our houseplants get leggy reaching for the window. Our moods dip. Our bodies feel heavier than they should. We joke about it, but honestly, we’re not entirely joking.
Here’s the thing though: your body responds to light in ways that go way beyond mood. Every single cell in your body has the ability to absorb light and use it as fuel, kind of the same way a plant does. And that’s not a metaphor I’m using to make things sound cute. It’s actually the biology behind one of the most well-researched wellness tools available right now, which is red light therapy.
I just added an InHarmony red light panel to the spa, and I’ve had so many questions about it already that I wanted to write this out properly. Because “it’s good for you” isn’t really a satisfying answer, and you deserve to know what’s actually happening when you sit in front of one of these things. So let’s get into it.
So What Is Red Light Therapy, Actually?
Red light therapy, also called photobiomodulation, is the use of specific wavelengths of red and near-infrared light to stimulate healing and cellular function inside the body. It uses LED technology, not UV light, which means there’s no tanning, no burning, and no skin damage. If your first mental image was a tanning bed, go ahead and erase that completely. This is a completely different animal.
The research behind it actually started with NASA in the 1990s. They were studying whether red light could help plants grow in space, and in the process, scientists noticed it was accelerating wound healing in the astronauts too. That discovery opened up decades of research into what specific light frequencies can do inside human tissue, and the findings have been genuinely surprising. We’re talking about measurable effects on inflammation, pain, cellular repair, sleep, skin health, and nervous system regulation, all from sitting near a panel of lights for 20 to 40 minutes.
Out here in the PNW, we understand light-hunger in a way people in sunnier climates just don’t. There’s a reason everyone in western Washington owns at least one sad little grow light and still kills their succulents. Red light therapy isn’t a substitute for actual sunshine, but for a body that’s been running low on light exposure for months at a time, it offers something genuinely real.
Let’s Talk About Your Mitochondria (Just Stay With Me for a Second)
Remember from middle school science that the mitochondria is the powerhouse of the cell? That one actually matters here, so it’s worth revisiting.
Your mitochondria produce a molecule called ATP, adenosine triphosphate, which is essentially your cells’ energy currency. Every repair process, every inflammatory response, every bit of tissue regeneration your body does runs on ATP. When your mitochondria are functioning well, your cells have the fuel they need to do their jobs efficiently. When they’re sluggish, everything downstream slows down too, including healing, recovery, and how you feel day to day.
Here’s where red and near-infrared light come in. When these specific wavelengths reach your tissue, they get absorbed by an enzyme inside the mitochondria called cytochrome c oxidase. That absorption essentially wakes the mitochondria up and triggers a significant boost in ATP production. More ATP means your cells can repair faster, reduce inflammation more effectively, and function closer to the way they’re supposed to.
Think about it like this: a plant sitting in a dim corner is technically alive, but it’s not thriving. Its leaves are pale, its growth is slow, and it’s just kind of… surviving. Move it into the light and watch what happens within a week. Your cells respond to therapeutic light in a similar way. They’re not broken without it, but they’re operating well below their potential, and you can often feel that even if you can’t name it.
The InHarmony panel I use at the spa delivers 8 distinct therapeutic wavelengths, including red wavelengths at 630, 650, 660, and 670 nanometers, which work at the surface level, and near-infrared wavelengths at 810, 830, 850, and 1060 nanometers, which penetrate deeper into muscle tissue, joints, and structural layers. Most panels on the market use 2 wavelengths. Eight is not standard. It’s one of the reasons I chose this panel specifically, because it was designed to pair with the vibroacoustic technology I already use, and InHarmony engineers both with the same level of precision and intention.
What Your Body Is Actually Doing During a Session
This is the part people find surprising, because red light therapy doesn’t feel like much while it’s happening. There’s mild warmth, a gentle glow, and a lot of just… resting. But underneath that stillness, your body is genuinely busy.
At the surface level, red light wavelengths are stimulating circulation and collagen production. Collagen is the structural protein that gives your skin its elasticity and firmness, and production of it naturally slows as we age. Red light gives that process a meaningful nudge. Over time and with consistent sessions, people notice real improvements in skin texture, tone, and the appearance of fine lines. That’s not marketing language. It’s a well-documented cellular response that shows up consistently across research.
At the mid-level, near-infrared wavelengths are reaching muscle tissue and working directly on inflammation. For anyone dealing with chronic tension, old injuries, or the kind of deep muscular fatigue that doesn’t fully resolve no matter how much you stretch or rest, this is where things get interesting. The increased ATP production accelerates the body’s natural repair cycle, meaning your tissue can move through inflammation faster instead of sitting stuck in that prolonged low-grade state that so many people have just accepted as their baseline.
Insider Tip from Amy: I see so much chronic tension locked into the scapular region, that area between and around the shoulder blades that holds onto stress like it’s getting paid to do it. It’s one of the areas I work most consistently in massage, and it’s also one of the areas where near-infrared light penetration can meaningfully support what we’re doing on the table. When tissue has been braced and guarded for a long time, it helps to approach it from multiple angles. Red light is a tool that fits naturally into that layered approach.
At the deeper level, red light therapy has measurable effects on the nervous system. It supports regulation of the stress response, helps modulate pain signals, and has been studied for its effects on sleep quality and mood. The connection between light exposure and how your body produces serotonin and melatonin is real, and when your nervous system gets a genuine signal to downshift, the ripple effects show up in ways you don’t always expect.
The Benefits People Actually Notice
The research list for red light therapy is long and keeps growing. But rather than walk through a clinical catalog, here’s what people using it consistently tend to actually report.
Pain relief is the one that surprises people the most, because they don’t expect a light panel to touch something they’ve been managing for years. But chronic pain almost always has an inflammatory component, and when you start addressing inflammation at the cellular level rather than just masking the sensation, things shift. I’ve worked with clients who came in after MVA injuries, repetitive strain issues, and years of accumulated tension in their necks, shoulders, and lower backs, people who had already been through physical therapy, tried medications, and were starting to wonder if this was just their life now. What I believe, and what I talk to my clients about regularly, is that the body responds best when you give it multiple tools at once. I’m a big advocate for what I call the holistic trifecta: chiropractic, acupuncture, and massage working together rather than any one modality trying to do everything alone. Red light fits into that same philosophy. It’s not a magic fix, but it’s a genuinely powerful support for a body that’s trying to heal.
Sleep quality improvement is another one that comes up consistently. The near-infrared wavelengths support mitochondrial function in ways that affect how your body produces and regulates melatonin, the hormone responsible for your sleep cycle. People who’ve struggled with restless sleep, trouble falling asleep, or that wired-but-tired feeling that’s become so common often notice a real shift within a few weeks of regular sessions. Better sleep changes everything downstream, including how your body handles pain, stress, and recovery.
Energy and mood tend to follow naturally. When your cells are producing ATP efficiently and your nervous system isn’t running a quiet background loop of low-level stress, you just feel more like yourself. It’s genuinely hard to quantify, but the people who experience it describe it the same way every time: more even, more grounded, more capable of handling what the day brings without feeling like you’re running on fumes.
Did You Know? Red light therapy has been studied in connection with neurological health, including promising research into its effects on people with dementia. In one study, participants who received regular light therapy sessions over 12 weeks showed measurable improvements in memory and sleep quality. The research is still developing and more large-scale studies are needed, but the direction is consistent: therapeutic light has effects that go well beyond the surface of the skin.
Skin changes are real too, though they genuinely require patience. Collagen remodeling is a slow process, and anyone who tells you otherwise is selling something. Most people start noticing meaningful changes in texture, tone, and firmness around the 8 to 12 week mark with consistent sessions. For anyone dealing with skin that feels dull, uneven, or like it aged faster than expected, especially those of us who spend our three sunny PNW months absolutely soaking up every ray and then paying for it later, red light offers a non-invasive and well-supported path toward real improvement.
Who This Is Really For
Red light therapy isn’t a treatment that only makes sense if you’re already deep into the biohacking wellness world with a stack of supplements and a cold plunge in your backyard. It’s for regular people carrying real things in their bodies, people who’ve normalized feeling worse than they should because they’ve been too busy to do anything about it.
It’s for the person who’s been managing chronic pain for so long that they’ve quietly stopped expecting it to fully go away. It’s for the person who sleeps but doesn’t feel rested, who exercises but recovers slower than they used to, who feels more tense and less resilient than they did a few years ago and can’t quite put their finger on why. It’s for the person hiking the trails out here, hauling kids and camping gear in and out of a Subaru on a Saturday, sitting at a desk for 8 hours, or doing physical work every single day, the person whose body is quietly keeping score of all of it even when they aren’t.
It’s also for the person who’s done with approaches that just manage symptoms and is genuinely curious about what it looks like to actually support the body instead. That’s the thread running through everything I do at Evergreen, whether it’s the vibroacoustic table, the deep tissue and scapular work I’m known for, or now the red light room. I got into this work because I believe the body has a real and remarkable capacity to heal when you give it the right environment and the right tools. Red light therapy fits that philosophy completely, and I wouldn’t be adding it to the spa if I didn’t believe that.
What’s Coming to Evergreen Wellness Spa
I’m setting up a dedicated red light and vibroacoustic room at the spa, and I’m deeply excited about what it’s going to offer! The InHarmony red light panel I chose is the same brand as my vibroacoustic table, and that’s completely intentional. InHarmony engineers these two technologies specifically to work together, and the research behind that combination is something worth understanding on its own.
If you’re curious about red light therapy as a standalone experience, I’d love to have you come in and try it. And if you’re curious about what happens when you layer it with vibroacoustic sound therapy in the same session, I’m writing about that next. It’s a good one.
Take things at your own pace. There’s no pressure here, just good information and an open door whenever you’re ready.