LED light therapy uses specific wavelengths of visible and near-infrared light to support different skin goals — red and near-infrared for fine lines and texture, blue for mild-to-moderate acne, and other colors for various supportive uses. Infrared sauna uses far-infrared heat to raise core body temperature, which supports circulation, recovery, and relaxation. At M-Power, we offer LED as a facial add-on (or as a 30-minute standalone service) and our infrared sauna as a private wellness session — both right here in Lee's Summit.
This guide is our honest take on both services: what the research actually supports, what's overstated in beauty marketing, and how we use these together at the spa to give you better results.
Quick Reference: What Each LED Color Actually Targets
| Light Color | Wavelength | Best Studied For | Evidence Strength |
|---|---|---|---|
| Blue | 415–470 nm | Mild-to-moderate inflammatory acne | Strong |
| Red | 630–660 nm | Fine lines, texture, collagen markers | Strong |
| Near-Infrared | 810–850 nm | Deeper skin renewal, recovery | Moderate |
| Yellow / Amber | 570–590 nm | Redness, post-procedure calm | Early evidence |
| Green | 520–550 nm | Often marketed for pigmentation | Limited evidence |
| Pink (red+blue) | Combination | Depends on actual wavelengths | Varies by mix |
| White / Polychromatic | Broad spectrum | General rejuvenation | Limited evidence |
Where LED Therapy Actually Came From
A lot of beauty articles tell you LED therapy was "invented by NASA" — and the real story is more interesting than the simplified version.
In the early 1990s, NASA funded a Wisconsin company to develop LED panels that could grow plants on the Space Shuttle. Halogen bulbs ran too hot and used too much power for spaceflight, so engineers built LEDs in red and blue wavelengths optimized for photosynthesis. The first system flew aboard Columbia in October 1995.
The discovery that pivoted the technology toward medicine happened by accident. Scientists working with their hands under the LED panels noticed their cuts and abrasions were healing faster than usual. Because astronauts heal more slowly in microgravity — and have a higher injury rate during missions — NASA funded a series of grants between 1995 and 2003 to study LED for wound healing. Dr. Harry Whelan at the Medical College of Wisconsin led most of that research, and his 2001 paper in the Journal of Clinical Laser Medicine & Surgery showed significant increases in cell growth in the lab and clear improvements in musculoskeletal injuries in Navy SEAL trainees.
By the mid-2000s, dermatologists had taken the wound-healing data and started studying LED for skin conditions. FDA-cleared LED devices for wrinkles and acne entered the market shortly after, and that's the heritage behind every professional LED facial today.
The mechanism is real and reasonably well understood. Specific wavelengths of light are absorbed by an enzyme inside your cells' mitochondria called cytochrome c oxidase, which boosts ATP (cellular energy) production. More energy in the cell supports collagen synthesis, calmer inflammation, and faster repair. The technical name is photobiomodulation, and it's the actual science behind every honest LED therapy claim.
What Each Color of Light Actually Does
Different wavelengths penetrate to different skin depths and affect different cellular processes. Here's where the research is — and where it isn't.
Red Light (630–660 nm) — Anti-Aging and Repair
Red light has the most defensible evidence for anti-aging benefits. A 2014 controlled trial published in Photomedicine and Laser Surgery followed 128 participants who completed treatment and follow-up; the red-light group showed improved wrinkle assessments, reduced skin roughness, and increased ultrasound-measured collagen density compared with controls.
A 2021 Aesthetic Surgery Journal review covering multiple LED studies found consistent improvements in fine lines, texture, elasticity, and collagen markers across red and near-infrared protocols, while honestly noting that most studies are small and use different devices and dosing.
The honest claim: red light has been studied for collagen-related skin renewal and may help improve the appearance of fine lines, texture, and firmness over a series of treatments. We don't promise it "stimulates collagen" as a guarantee, because skin biology is individual and complicated.
Near-Infrared (810–850 nm) — Going Deeper
Near-infrared penetrates deeper than visible red light, reaching tissue layers below the dermis. It's commonly paired with red in professional devices for layered effects. Most FDA-cleared LED wrinkle devices combine red and near-infrared wavelengths — for example, the LightStim wrinkle device is FDA-cleared and uses 605, 630, 660, and 855 nm.
Near-infrared is most defensible as part of a red+NIR combination protocol for skin rejuvenation and post-treatment recovery, not as a standalone wavelength.
Blue Light (415–470 nm) — Targeting Acne
Blue light has the strongest acne-specific evidence in the entire LED literature. A double-blind, sham-controlled trial published in the British Journal of Dermatology studied 35 patients with mild-to-moderate acne. Participants used 420 nm blue plus 660 nm red LED twice daily for four weeks. At 12 weeks, they showed a 76.8% reduction in inflammatory lesions and a 53.7% reduction in non-inflammatory lesions, with no severe adverse effects.
The mechanism: blue light targets Cutibacterium acnes, the bacterium that contributes to inflammatory acne breakouts. Blue light works on the surface and is most effective for mild-to-moderate acne — not for severe cystic acne, and not as a replacement for prescription dermatology care.
The honest claim: blue light has clinical evidence for mild-to-moderate inflammatory acne, especially when combined with red light. It's a strong supportive add-on to a consistent skincare routine.
Yellow / Amber Light (570–590 nm) — Calm and Restore
Yellow light has some real but still limited clinical evidence. A 10-patient pilot study using 585 nm amber LED reported improvements in pigmentation scores, melanin index, and erythema (redness) — and the authors specifically called for larger trials to confirm the findings. Yellow LED is also used in post-procedure protocols for reducing redness after laser or IPL, with mixed results across studies.
The honest framing: yellow may help calm the look of redness or post-treatment sensitivity, but the evidence base is much smaller than for red or blue.
Green, Pink, and White — Where We Want to Be Transparent
This is where we'd rather tell you what the research actually says than what beauty marketing says.
Green light (520–550 nm) is widely promoted for hyperpigmentation and dark spots. The clinical reality is thinner — most evidence cited for green light comes from non-LED treatments like KTP lasers (which are different from LED panels) or general visible-light studies. Standalone green LED for melasma or hyperpigmentation isn't well-established.
Pink light isn't a standard medical wavelength. In spa devices, "pink" typically means a red-and-blue combination, so any honest claims about it should be tied to the actual red and blue wavelengths underneath, not the pink label itself.
White or full-spectrum light combines multiple visible wavelengths. Some devices include it; the clinical evidence for whole-spectrum visible LED facial treatment is limited compared with specific wavelength protocols.
We include all six colors on our LED device because clients sometimes want them, and there's no harm in using them. But we want you to know which colors have strong evidence behind them (blue, red, near-infrared) and which are more marketing-supportive than research-backed. That kind of honesty is how we'd rather earn your trust.
How Often and When You'll See Results
For professional LED treatments, the typical starting protocol is one session per week for four weeks, followed by monthly maintenance. Results timelines vary by what you're treating:
| Skin Concern | Typical Visible Timeline |
|---|---|
| Acne (mild-to-moderate) | 2–6 weeks |
| Anti-aging / fine lines | 4–12 weeks |
| Dark spots / hyperpigmentation | ~3 months |
| Overall complexion glow | ~4 weeks |
Results are gradual because LED works at the cellular level, and skin cell turnover takes anywhere from 21 to 40+ days depending on age. An American Academy of Dermatology-cited study of 90 patients receiving 8 LED red-light treatments over four weeks found that more than 90% reported improvements in skin softness, smoothness, redness, and dark-spot lightening.
What an Infrared Sauna Actually Does
An infrared sauna uses infrared light wavelengths to warm your body directly instead of heating the air around you. That's why infrared saunas operate at 110–135°F — much lower than the 150–185°F of traditional Finnish saunas — while still producing a deep, comfortable sweat.
The evidence for infrared sauna benefits is real, but it's strongest in specific areas. Here's what the research supports.
Cardiovascular and Circulation Support — The Strongest Evidence
A 2018 systematic review covering 40 clinical studies and 3,855 participants of dry sauna use found consistent cardiovascular benefits, with far-infrared sauna studies prominently represented. In Japanese clinical trials using "Waon therapy" (a far-infrared protocol), patients with chronic heart failure showed measurable improvements in heart function, lower markers of cardiac stress, and improved walking distance.
A 2021 review in the International Journal of Environmental Research and Public Health noted that single sauna sessions acutely lower blood pressure, and chronic far-infrared sauna use can produce sustained reductions of about 10 mmHg systolic over a couple of weeks. The mechanism is heat-stimulated nitric oxide release, which promotes vasodilation.
Harvard Health summarizes the cardiovascular evidence directly: "It lowers blood pressure, and there is every reason to believe this is real."
Stress, Relaxation, and Recovery
Heat exposure activates your parasympathetic ("rest and digest") nervous system, reduces stress hormones, and triggers endorphin release — responses that parallel what happens after moderate exercise. The Cleveland Clinic notes that sauna use shows real improvements in anxiety and stress response in clinical studies.
Smaller controlled trials in patients with mild depression and chronic fatigue have shown improvements in mood, fatigue, and somatic symptoms after consistent far-infrared sauna sessions over several weeks.
Sleep Support
The mechanism is straightforward: sauna raises your core body temperature, and the post-session cool-down mimics the natural thermal cue your brain uses to initiate sleep. This is the same biology behind why a warm bath before bed feels sleep-inducing. Sauna sessions about 60–120 minutes before bedtime appear most effective.
Skin Effects — Real but Easy to Overstate
Deep sweating opens pores, increases circulation to the skin, and brings oxygen and nutrients to the surface. A 2006 study in Yonsei Medical Journal followed 20 patients receiving daily far-infrared sessions over six months and found self-reported improvements in skin texture and roughness — though the histological evidence was less definitive, which the authors acknowledged.
The honest framing: deep sweating and increased circulation create supportive conditions for skin health. Specific claims that infrared sauna "builds collagen" or "reverses wrinkles" go beyond what current evidence definitively supports. We'd rather tell you what's real than oversell.
About "Detox" Claims
You've probably seen marketing that infrared saunas "detoxify the body" or "sweat out toxins." We want to be straight with you: mainstream medicine doesn't support this claim the way it's typically marketed. The Cleveland Clinic doesn't use the word "detox" in their sauna content, and the Mayo Clinic is similarly conservative.
The reality: your liver and kidneys handle the overwhelming majority of your body's natural detoxification. Sweat is roughly 99% water and primarily handles thermoregulation, not toxin clearance. Some studies have detected trace metals in sweat, but the clinical relevance compared with how your liver and kidneys function on their own isn't established.
What infrared sauna does well is documented above — circulation, blood pressure, stress, sleep, and skin support. We'd rather tell you the truth than sell you a story that doesn't hold up.
Infrared Sauna vs. Traditional Sauna
| Feature | Infrared Sauna | Traditional Sauna |
|---|---|---|
| Heat source | Infrared light panels | Heated rocks / steam |
| Temperature | 110–135°F | 150–185°F |
| Heat delivery | Directly to body tissue | Heats surrounding air first |
| Sweat depth | Deep at lower temperature | Intense from high heat |
| Session tolerance | More comfortable, longer | Intense, shorter sessions |
One thing worth noting: most of the long-term research linking sauna use to reduced heart disease and dementia (the well-known Finnish cohort studies) was conducted with traditional saunas. Infrared sauna research is meaningful but smaller in scale, and the two should be discussed honestly as related but distinct modalities.
Why We Recommend Sauna Before Your LED Facial
This is the question we get most often, and it's where our experience offering both services together gives us a perspective most spas don't.
When you sit in our infrared sauna for 30 minutes, several things happen at once. Your blood vessels dilate. Circulation to your skin increases dramatically. Your pores open. Your body's overall metabolic activity rises. By the time you walk out, your skin is in a different physiological state than it was when you walked in.
If you immediately follow that with a facial — including the LED therapy add-on — your skin is primed. Better circulation means better delivery of oxygen and nutrients to the cells receiving the LED light. Open pores mean more thorough cleansing and product penetration. Warmer tissue means cellular metabolism is already elevated.
We want to be honest about this part: the combination protocol isn't a clinically validated medical procedure with its own randomized trial. The underlying science of vasodilation, heat-induced cellular activity, and photobiomodulation is well-established individually, but combining them is a practitioner-informed approach, not a clinical mandate. What we can say is that clients who do this combination consistently report excellent results, and the science supports the rationale.
We're the only spa in Lee's Summit where you can book this combination in a single visit. Some local providers offer LED therapy. A few offer infrared sauna. Nobody else integrates both with full-service esthetics under one roof. Most clients book a 30-minute sauna session followed by a 60-minute facial with the LED add-on. Some come in just for one or the other; both are worthwhile on their own. If you're combining LED with deeper services like microneedling or chemical peels, it's worth reviewing our advanced skin treatments options as well.
Who Shouldn't Use These Services
We'd rather have an honest conversation about contraindications up front than have a problem during your appointment. Both LED therapy and infrared sauna are very safe for the vast majority of healthy adults — but here's who should consult with their doctor first or skip these services.
For LED light therapy, talk to your provider first if you:
- Take photosensitizing medications (isotretinoin/Accutane, lithium, certain antibiotics or antifungals, chemotherapy)
- Have active cancer or unevaluated skin lesions
- Have lupus, porphyria, or other photosensitive conditions
- Have photosensitive epilepsy
- Are pregnant (precautionary — limited research)
- Have pre-existing eye conditions (we always provide eye protection regardless)
For infrared sauna, don't use without medical clearance if you:
- Are pregnant
- Have unstable cardiovascular conditions (unstable angina, recent heart attack, severe aortic stenosis, or uncontrolled blood pressure consistently above 180/110)
- Have an active fever or infection
- Are intoxicated from alcohol or drugs
- Have conditions that impair sweating
- Have hemophilia or a bleeding disorder
Always check with your doctor if you:
- Have stable but diagnosed cardiovascular disease
- Take diuretics, beta-blockers, or antihistamines
- Are breastfeeding
If anything on these lists applies to you, it doesn't necessarily mean these services are off the table — it just means you should check with your physician before booking. We're happy to talk through any concerns when you arrive.
At M-Power Salon & Spa in Lee's Summit
We've been serving Lee's Summit and Eastern Jackson County for nine years, and we've added LED therapy and our infrared sauna because they're services that genuinely deliver — when used honestly and consistently.
LED Light Therapy
- $15 add-on to any facial service
- $30 standalone (30-minute service, includes a double cleanse)
Infrared Sauna
- $15 per 30-minute solo session
We're located at 621 NE Woods Chapel Rd., Lee's Summit, MO 64064 — easy to reach from Independence, Blue Springs, Raytown, Greenwood, and Grain Valley. To book either service or schedule the sauna+facial+LED combination, book online or call us at (816) 800-1857.
If you have questions about which service is right for your skin or your wellness goals, we'd love to talk. Send us a message or stop by — figuring out the right approach for your specific concerns is part of what we do.
Frequently Asked Questions
How often should I get LED light therapy?
Most clients see the best results from one session per week for four weeks, then monthly maintenance. If you're using LED as a facial add-on, every 4–6 weeks alongside your regular facial is a great cadence.
How long does it take to see results from LED therapy?
For acne, you may see improvements within 2–6 weeks. For anti-aging concerns like fine lines and texture, 4–12 weeks of consistent treatment is typical. Hyperpigmentation can take around 3 months. The cellular processes LED supports are gradual by nature.
Can I use LED therapy if I'm pregnant or taking acne medication?
If you're pregnant or take photosensitizing medications like isotretinoin (Accutane), lithium, or certain antibiotics, talk to your doctor before booking. The same goes for some antifungals and chemotherapy drugs. We'd rather you check with your provider than risk an unwanted reaction.
What's the difference between professional LED and an at-home LED mask?
Professional devices typically deliver 10–15 times the irradiance (power output) of consumer at-home masks. That means professional sessions produce visible results faster. At-home masks can deliver real benefits with consistent use over months, but they're better suited to maintenance than to producing significant initial improvement.
How long should an infrared sauna session be?
For most people, 15–45 minutes is the sweet spot. Beginners should start at 15–20 minutes and listen to their body. The optimal range for experienced users is generally 30–45 minutes. Going beyond 60 minutes shows diminishing returns and increases dehydration risk. Hydrate well before, during, and after every session.
Is infrared sauna safe if I have high blood pressure?
Mild, well-controlled high blood pressure isn't an absolute contraindication, but uncontrolled blood pressure (consistently above 180/110) is. Talk to your cardiologist or primary care provider before using a sauna if you have any cardiovascular condition. The good news: research shows sauna use generally lowers blood pressure over time — but the initial cardiovascular response is real and worth being smart about.
Does an infrared sauna actually detox your body?
Not in the way it's often marketed. Your liver and kidneys handle the overwhelming majority of your body's natural detoxification. Sweat carries trace amounts of some compounds, but the clinical impact is small compared with how those organs function on their own. What infrared saunas actually do well — supported by good research — is improve circulation, lower blood pressure over time, support stress relief and sleep, and create healthy conditions for your skin. We'd rather highlight what's real.
Can I do LED therapy and infrared sauna in the same visit?
Yes — and we recommend it for clients who want the most from both. A 30-minute sauna session followed by a facial with the LED add-on is one of our favorite combinations. The sauna primes your skin (improved circulation, open pores, elevated metabolic activity), and the LED therapy delivers its photobiomodulation effects to skin that's already in an optimal state.
Is LED light therapy FDA-approved?
LED devices are FDA-cleared, not FDA-approved — these are different regulatory categories. FDA clearance (under the 510(k) pathway) means the device has been reviewed for safety and equivalence to existing devices. FDA approval is a higher bar reserved for drugs and certain device types. Most professional and consumer LED facial devices have 510(k) clearance for indications like wrinkles or mild-to-moderate acne. The distinction matters for marketing accuracy.
How much does LED therapy or infrared sauna cost at M-Power?
LED light therapy at M-Power is $15 as a facial add-on or $30 as a 30-minute standalone treatment that includes a double cleanse. Our infrared sauna is $15 per 30-minute solo session. We don't charge for consultations — if you're not sure which service makes sense for your goals, just call or come in.
This article was written and reviewed by Mackinze, owner and licensed esthetician at M-Power Salon & Spa in Lee's Summit, MO. It cites peer-reviewed research from the National Library of Medicine, FDA device clearance records, the American Academy of Dermatology, the Cleveland Clinic, the Mayo Clinic, Harvard Health, and other authoritative sources. We update this guide as new research emerges. Last reviewed: May 2026.