Almost every infrared sauna catalog now lists chromotherapy sauna lights as a premium feature, usually with a chart claiming that blue light calms your nervous system, red light boosts circulation, yellow light aids digestion, and so on. People ask us whether it's worth paying extra for, and the honest answer is: mostly no, but not entirely.

So let's separate what the research actually supports from what's marketing copy. Chromotherapy sauna lights blend together two very different things — a debunked alternative-medicine practice and some legitimate light science — and the marketing leans hard on the legitimate part to sell the debunked part.

What chromotherapy actually claims

Traditional chromotherapy (also called color therapy or colorology) is the idea that specific colors of light can treat specific diseases or "balance the body's energy." The orange-light-heals-your-kidneys, green-light-detoxifies type of claim.

This is where it falls apart. Chromotherapy in this sense is classified as pseudoscience, and the American Cancer Society and medical reviewers have stated plainly that there's no good evidence colored light treats physical disease. A critical analysis published in a peer-reviewed journal traces the practice back to the 19th century and notes it doesn't follow the scientific method. WebMD's review reaches the same conclusion: chromotherapy is used for depression, stress, and fatigue, but there's no good scientific evidence to support these uses.

So if a sauna company tells you their light system will detox your liver or rebalance your chakras, that's the part to ignore.

The part that's actually real: light and mood

Here's where it gets more interesting, and where the marketing borrows its credibility. Light absolutely affects your body — just not in the organ-by-organ way chromotherapy charts claim.

The strongest evidence is for blue light and mood. Blue wavelengths suppress melatonin and shift your circadian rhythm through specialized cells in your retina, and bright-light therapy is a genuine first-line clinical treatment for Seasonal Affective Disorder. This is the same territory as the well-documented stress and mental-health benefits of regular sauna use — real effects, just often oversold by feature marketing. A 2022 systematic review and meta-analysis of nine randomized controlled trials found blue-light therapy effective for seasonal and non-seasonal depression. That's real, peer-reviewed support — but notice it's about treating diagnosed mood disorders with controlled light exposure, not about a strip of colored LEDs in a sauna.

There's also early evidence for green light and pain. A 2021 clinical trial in Pain Medicine exposed fibromyalgia patients to green LED light for one to two hours daily over ten weeks and found a significant reduction in pain intensity, with no side effects. Promising, but preliminary — it was a small, single-group study, and again it used dedicated daily exposure, not ambient sauna lighting.

So the legitimate takeaway is narrow: certain wavelengths, at sufficient intensity and duration, can affect mood and pain. Sitting in a softly colored, relaxing room genuinely feels good and may nudge your mood. That's a real psychological effect. It's just not the disease-curing claim on the chromotherapy chart, and it isn't specific to a sauna.

Chromotherapy lights vs. red light therapy — don't confuse them

This is the most important distinction, because the marketing actively blurs it.

Red light therapy, or photobiomodulation, is the real deal for certain uses. Red and near-infrared light at specific wavelengths stimulates mitochondria, and the evidence for wound healing and reducing inflammation is solid — a systematic review of 56 trials with nearly 5,000 participants supports its effects on healing and pain.

But — and this is the catch — those effects depend on hitting a specific wavelength (roughly 630–660nm for skin, 810–850nm for deeper tissue) at a specific intensity. The colored LED in a chromotherapy system is decorative lighting. It doesn't come close to the irradiance of a real red light therapy panel. A red chromotherapy bulb is not red light therapy, no matter how the brochure phrases it. If you want the photobiomodulation benefits, you need a dedicated panel, which is a separate piece of equipment with its own specs.

So is it worth paying for?

If you enjoy sitting in a sauna bathed in a calming color, that's a perfectly good reason to add it. The relaxation and mood effect is mild but real, and relaxation is a big part of why people sauna in the first place. We're not going to tell you a feature you'll enjoy is worthless.

What we'd push back on is paying a large premium because you believe it's treating a medical condition, or buying a sauna specifically for its chromotherapy "health benefits." On that front, the science isn't there. Spend the money on the things that actually drive the sauna experience first — heater sizing, ventilation, bench height, and wood quality — and treat colored lighting as the nice-to-have ambiance feature it is. If you do want to plan lighting properly, our sauna lighting ideas guide covers placement and fixtures that hold up to heat and humidity.

Frequently Asked Questions

Do chromotherapy sauna lights have any proven health benefits?

Not in the way they're marketed. The specific claims (color X heals organ Y) are pseudoscience with no good evidence. There is legitimate research that blue light helps mood disorders and green light may reduce certain pain, but those studies used dedicated, controlled light exposure, not ambient sauna lighting. The realistic benefit of chromotherapy lights is relaxation and a mild mood lift.

Is chromotherapy the same as red light therapy?

No. Red light therapy (photobiomodulation) uses specific wavelengths and intensities of red and near-infrared light and has solid evidence for wound healing and inflammation. A colored chromotherapy LED is decorative and doesn't reach the intensity needed for those effects. If you want red light therapy benefits, you need a dedicated panel.

Should I pay extra for chromotherapy in my sauna?

Only if you'll enjoy the ambiance. It's a reasonable comfort feature, but it shouldn't be a deciding factor in a build, and it's not a substitute for medical treatment. Prioritize heater sizing, ventilation, and bench layout first — those determine whether the sauna actually works well.

Does blue light in a sauna help with sleep or seasonal depression?

Bright blue light therapy is an established treatment for Seasonal Affective Disorder, but that uses high-intensity, timed exposure under clinical guidance. A blue sauna light is far too dim and used too briefly to replicate that. For sleep specifically, blue light suppresses melatonin, so a relaxing warm color before bed makes more sense than blue.

Next Steps

If you're planning a sauna and trying to figure out which features are worth the money and which are upsells, that's exactly the kind of thing we help with. We design saunas around the things that actually change the experience and steer people away from paying premiums for features that don't deliver. Get in touch and we'll talk through your build.

References

• Chromotherapy overview and scientific consensus — Wikipedia: Chromotherapy
• Yousuf Azeemi & Raza, "A Critical Analysis of Chromotherapy and Its Scientific Evolution" — PMC
• WebMD, Chromotherapy uses and evidence — WebMD
• Do et al. (2022), "Blue-Light Therapy for Seasonal and Non-Seasonal Depression: A Systematic Review and Meta-Analysis of RCTs" — PMC
• Martin et al. (2021), "Green Light Exposure Improves Pain and Quality of Life in Fibromyalgia Patients" — Pain Medicine
• "Immunomodulatory effects of photobiomodulation: a comprehensive review" — PMC