Light Therapy for Eczema Relief: Red, Blue, & Infrared Light Explained

By Diane Angela Fong, ND

Eczema, or atopic dermatitis, is a complex chronic skin condition affecting millions of people worldwide. Characterized by persistent inflammation, itching, and compromised skin barriers, it often requires a multifaceted treatment approach. While conventional treatments like corticosteroids and moisturizers are effective for many, they often fall short in providing sustainable relief.

Light therapies, including blue, red, near-infrared (NIR), and far-infrared (FIR) light, have emerged as promising alternatives. These therapies use specific wavelengths of light to target inflammation, enhance skin barrier repair, and even alleviate chronic stressors that exacerbate eczema. By exploring the science behind these modalities and their mechanisms of action, we can understand how they differ from traditional treatments like UVB therapy and how they work together to promote skin health.

What Are Wavelengths and How Do They Affect the Skin?

Light therapy involves using specific wavelengths to penetrate the skin and influence cellular processes. Measured in nanometers (nm), different wavelengths determine how deeply the light penetrates and which biological effects it triggers:

• Blue Light (400–495 nm): Primarily affects the skin's surface, targeting inflammation and bacteria.

• Red Light (620–700 nm): Reaches deeper into the dermis to stimulate healing and cellular regeneration.

• Near-Infrared (NIR) Light (700–1200 nm): Penetrates even further, targeting muscles and deeper tissues to reduce systemic inflammation and support tissue repair.

• Far-Infrared (FIR) Light (3000–100,000 nm): Delivers thermal energy to the skin and underlying tissues, improving circulation and reducing stress-related triggers for eczema.

These wavelengths offer unique but complementary benefits, making light therapy versatile for treating eczema at different levels.

Blue Light Therapy For Eczema

Blue light therapy operates at the surface of the skin, where it delivers targeted antimicrobial and anti-inflammatory effects. This makes it particularly effective for managing the bacterial and immune responses often associated with eczema.

How Blue Light Works

1. Kills Bacteria: Eliminates Staphylococcus aureus, a common bacterium found on the skin of eczema patients that can trigger flare-ups and worsen inflammation.

2. Reduces Inflammation: Suppresses the release of cytokines such as IL-4 and IL-13, which are key drivers of eczema-related inflammation.

3. Supports Skin Barrier Repair: By lowering bacterial presence and inflammation, blue light helps the skin’s barrier heal more effectively, improving its ability to retain moisture and protect against irritants.

   
   

Supporting Studies

1. Reduction in Eczema Severity: A 2016 study published in Dermatology demonstrated significant reductions in eczema severity after blue light therapy. Importantly, no adverse effects were reported, highlighting its safety for eczema management.

2. Improvements in Itch and Sleep Quality: Research published in PLOS ONE highlighted blue light therapy’s ability to improve eczema symptoms, including reductions in itchiness and better sleep quality, contributing to overall improvements in patient quality of life.

Red Light Therapy For Eczema

Red light therapy penetrates deeper into the skin, targeting cells in the dermis to enhance healing and reduce inflammation. Its ability to interact with mitochondria—the energy powerhouses of cells—makes it particularly effective for promoting skin repair and reducing eczema symptoms.

How Red Light Works

1. Boosts Cellular Energy: Stimulates mitochondrial ATP production, fueling cell repair and regeneration.

2. Reduces Inflammation: Lowers pro-inflammatory markers such as tumor necrosis factor-alpha (TNF-α) and interleukin-1 beta (IL-1β).

3. Supports Collagen Production: Enhances the skin's ability to heal and rebuild its barrier, strengthening the skin over time.

4. Improves Blood Flow: Enhances microcirculation, delivering oxygen and nutrients to affected areas, accelerating healing.

   
   

Supporting Studies

1. Reduction in Itchiness and Rash Severity: A clinical study published in the Journal of the International Society of Laser Medicine and Surgery reported that 79% of eczema patients experienced a reduction in itchiness, and 71% saw improvements in rashes after undergoing red light therapy. Importantly, no adverse side effects were observed, emphasizing its safety as a treatment option.

2. Animal Study on Red Light for Atopic Dermatitis: A 2021 animal study demonstrated that red light therapy at 650 nm significantly reduced skin inflammation, skin thickness, itchiness, and mast cell counts in subjects with atopic dermatitis. The researchers concluded that this treatment “might be used as an efficacious, safe, and steroid-free alternative therapeutic strategy for the treatment of atopic dermatitis.”

3. Combination Therapy with Red LED Light and Curcumin: In a study using a modified SCORAD index, researchers found that the combination of red LED light therapy (630 nm) with curcumin produced the best outcomes. This group outperformed those treated with either curcumin or red light alone, suggesting that red light can enhance the effects of anti-inflammatory agents when used together.

   
   

These findings highlight red light therapy’s effectiveness in reducing inflammation and promoting skin healing, making it a promising option for eczema patients seeking a non-invasive, drug-free solution.

Near-Infrared (NIR) Light Therapy For Eczema

Near-infrared (NIR) light therapy penetrates deeper into the body than visible light, reaching muscles, connective tissues, and the vascular system. Its ability to promote systemic healing makes it a promising therapy for addressing underlying factors associated with eczema.

How NIR Works

1. Tissue Repair: Stimulates fibroblast activity and collagen production, which are essential for repairing and strengthening the skin barrier.

2. Systemic Anti-Inflammation: Enhances circulation and lymphatic drainage, reducing inflammatory markers and supporting the body’s ability to eliminate inflammation-causing agents.

3. Detoxification: Increases blood flow, which helps the body remove toxins that may contribute to chronic skin conditions like eczema.

   
   

Supporting Studies

1. Improved Tissue Repair and Reduced Inflammation: Research published in the Journal of the American Academy of Dermatology found that a combination of red and NIR light therapy improved tissue repair and reduced inflammation. Although further studies specific to eczema are needed, these findings highlight NIR light’s potential benefits for managing skin conditions.

Far-Infrared (FIR) Light Therapy For Eczema

Far-infrared (FIR) therapy uses thermal energy to penetrate deeply into the skin and tissues, enhancing circulation, reducing inflammation, and promoting overall relaxation. While there are no direct studies on FIR therapy specifically for eczema, existing research highlights its benefits in addressing some of the root causes of eczema, such as inflammation, impaired skin barrier function, and stress.

How FIR Works

1. Improves Circulation: FIR therapy increases blood flow, delivering essential oxygen and nutrients to the skin and aiding in the removal of toxins and inflammatory agents.

2. Reduces Inflammation: Studies show FIR can modulate inflammatory markers, helping to calm chronic inflammation.

3. Supports Skin Barrier Repair: FIR therapy enhances hydration and elasticity, promoting barrier repair and reducing oxidative stress.

4. Reduces Stress: The heat and relaxation provided by FIR can help alleviate stress, a common trigger for eczema flare-ups.

   
   

Important Note on Use

Although FIR therapy offers promising benefits for addressing the underlying causes of eczema, it is typically best reserved for patients whose skin has improved and is less prone to flares. The heat and sweating associated with FIR therapy can sometimes trigger irritation or exacerbate symptoms, making it less ideal during active flare-ups.

Supporting Studies

1. Improved Healing and Reduced Inflammation: A study published in Biomedical Research demonstrated that FIR therapy improved wound healing and reduced inflammation by enhancing blood flow and cellular activity.

2. Enhanced Skin Elasticity and Hydration: Research in Acta Dermatovenerologica Croatica showed that FIR therapy improved skin hydration, elasticity, and barrier repair, all of which are crucial for managing eczema.

3. Reduction of Inflammatory Markers: A study in Experimental Biology and Medicine found that FIR therapy lowered levels of pro-inflammatory cytokines, including TNF-α and IL-6, which are often elevated in eczema.

4. Stress Reduction and Immune Modulation: FIR therapy was shown in a study published in Circulation Journal to reduce stress and improve immune balance, indirectly benefiting eczema by addressing one of its primary triggers.

While FIR therapy is not a direct treatment for eczema, its effects on inflammation, circulation, and stress can help address underlying factors contributing to the condition. For patients whose skin has stabilized, FIR therapy can be a valuable tool to support long-term healing and overall skin health. However, caution is advised during active flare-ups, as the heat and sweating can sometimes trigger irritation.

Differentiating Light Therapies from UVB Therapy

Light therapy offers a range of options for managing eczema, but not all light-based treatments work the same way. While UVB therapy (280–315 nm) is a well-established treatment for moderate to severe eczema, it operates differently than blue, red, near-infrared (NIR), and far-infrared (FIR) therapies.

How UVB Therapy Works

UVB therapy involves exposing the skin to ultraviolet B light, which penetrates the outer layers of the skin. It primarily works by:

1. Suppressing the Immune System: UVB reduces the activity of immune cells, such as T cells, that contribute to eczema-related inflammation.

2. Slowing Skin Cell Growth: It decreases the rapid production of skin cells, a hallmark of eczema, helping to reduce scaling and plaques.

   
   

While effective, UVB therapy comes with notable risks:

• DNA Damage: The ultraviolet light can cause mutations in skin cells, increasing the risk of skin cancer.

• Premature Aging: Prolonged UVB exposure accelerates the aging process, leading to wrinkles and loss of skin elasticity.

• Short-Term Side Effects: Treatments can cause redness, sunburn-like reactions, and increased sensitivity to sunlight.

How Blue, Red, NIR, and FIR Therapies Differ

Unlike UVB, blue, red, NIR, and FIR therapies use non-ionizing light that does not carry the same risks of DNA damage or cancer. These therapies provide a safer, non-invasive option for eczema management, offering distinct advantages:

1. Non-Damaging to DNA: These therapies operate in the visible or near-infrared spectrum and do not emit ultraviolet radiation, eliminating the risk of DNA damage.

2. Holistic Benefits: They work by addressing the underlying causes of eczema rather than just managing symptoms:

   • Blue Light: Kills harmful bacteria and reduces surface inflammation.

   • Red Light: Penetrates deeper to stimulate cellular repair and reduce inflammation.

   • NIR Light: Promotes systemic healing by improving circulation and reducing chronic inflammation.

   • FIR Light: Enhances detoxification and stress reduction, addressing triggers for flare-ups.

3. Promotes Skin Barrier Repair: These therapies enhance the skin's natural ability to heal, improving hydration, elasticity, and barrier function over time.

4. Safer for Long-Term Use: Unlike UVB, which is typically limited to short-term regimens due to safety concerns, blue, red, NIR, and FIR therapies can be safely used over extended periods.

5. Complementary Treatment Options: These therapies can be combined with traditional treatments like moisturizers or topical steroids, or used independently, depending on the severity of the eczema.

   
   

Choosing the Right Therapy

• UVB Therapy: Best suited for severe cases of eczema where rapid suppression of immune activity is required. However, it should be used under strict medical supervision due to its risks.

• Blue, Red, NIR, and FIR Therapies: Ideal for patients looking for safer, long-term management options. These therapies can also be effective for mild to moderate eczema or as a complement to other treatments.

While UVB therapy remains an effective option for severe eczema, the risks associated with ultraviolet exposure make it less suitable for long-term use. In contrast, blue, red, NIR, and FIR therapies offer a holistic, non-damaging approach to treating eczema. They not only reduce inflammation and repair the skin barrier but also provide systemic benefits that support overall healing. For patients seeking safer and more sustainable treatment options, these light therapies are a promising alternative.

Recommended Light Therapy Devices

For those interested in trying light therapy at home, the following devices offer high-quality options for eczema management:

Face Masks

For eczema affecting the face, light therapy masks provide targeted, convenient solutions for reducing inflammation and improving skin health. Here are some top options:

1. HigherDOSE Red Light Face Mask

   • Type: Red Light Therapy

   • Benefits: This wearable mask uses red light therapy to target inflammation, promote skin repair, and improve overall skin texture. Its convenient, hands-free design makes it easy to incorporate into your skincare routine.

   • Use the Code CLEANBODY75 for a discount!

2. Project E Beauty Silicone LED Light Therapy Mask

   • Type: Red and Blue Light Therapy

   • Benefits: This FDA-cleared, flexible mask features multiple light settings, including red and blue light, to provide customizable treatment for eczema. Blue light helps eliminate bacteria, while red light reduces inflammation and promotes healing.

Handheld Devices

For those seeking versatility and portability, handheld devices are excellent for targeting specific areas of eczema.

1. Project E Beauty LumaGlow Red & Blue Light Therapy Device

   • Type: Red and Blue Light Therapy

   • Benefits: This compact device combines red and blue light to deliver antimicrobial and anti-inflammatory benefits. Blue light targets surface bacteria, while red light penetrates deeper to support skin repair and reduce inflammation. Its handheld design makes it ideal for spot treatments or small areas.

     
     

These face masks and handheld devices are perfect for those looking to manage eczema symptoms with focused light therapy solutions. They can complement broader treatments such as full-body devices for systemic healing.

Full Body Devices

If you’re considering full-body light therapy to address eczema symptoms, these devices provide professional-grade options that target inflammation, improve circulation, and support systemic healing:

1. MitoRed Light Therapy Devices

   • Type: Red and Near-Infrared (NIR) Therapy

   • Benefits: Offers professional-grade red and NIR light therapy, penetrating deep into tissues to promote cellular repair, reduce inflammation, and accelerate healing. Ideal for addressing deeper-rooted eczema triggers and improving overall skin health.

2. HigherDOSE Infrared Sauna Blanket

   • Type: Far-Infrared (FIR) Therapy

   • Benefits: This portable sauna blanket delivers FIR therapy to improve circulation, promote detoxification, and alleviate stress—an important trigger for eczema flare-ups. Its compact design makes it convenient for home use.

   • Use the Code CLEANBODY75 for a discount!

3. Clearlight Walk-In Infrared Sauna

   • Type: Far-Infrared (FIR) Therapy

   • Benefits: A full-body sauna experience designed to provide systemic detoxification, enhance circulation, and promote relaxation. Ideal for patients seeking a luxurious, spa-like experience to support long-term skin healing.

4. PEMF Infrared Mat

   • Type: Pulsed Electromagnetic Field (PEMF) and Far-Infrared (FIR) Therapy

   • Benefits: Combines FIR heat with PEMF therapy to target deeper tissues, improve circulation, and modulate inflammation. This dual-action device is particularly beneficial for addressing systemic inflammation and promoting relaxation, supporting eczema management indirectly.

   • Use the Code CLEANBODY75 for a discount!

These full-body devices complement topical treatments and localized light therapy by targeting systemic factors such as inflammation, circulation, and stress, making them a valuable addition to an eczema management plan. Always consult with a healthcare provider to determine which device is best suited to your individual needs.

Get Support From Our Team

Light therapy, including blue, red, near-infrared (NIR), and far-infrared (FIR) light, offers a powerful and versatile approach for managing eczema symptoms. These therapies work on multiple levels to address inflammation, repair skin barriers, and reduce stress triggers, all without the risks associated with UVB therapy. By incorporating light therapy into an eczema treatment plan, individuals can explore a safer and non-invasive path toward healthier skin.

The availability of effective at-home devices makes these therapies accessible and convenient, allowing users to tailor their treatment to their specific needs. However, it’s essential to work with a knowledgeable practitioner to determine the best option for your unique situation and to identify the right point in your healing journey to incorporate these therapies. Every individual’s eczema is different, and a personalized approach ensures that treatments align with your specific needs and goals.

If you’re ready to explore how light therapy and other holistic strategies can fit into your eczema care plan, we’re here to help. Partner with us to create a customized plan that supports your skin’s healing from the inside out.

If you or your child have eczema, our team can help you evaluate these root causes of your eczema to support you in healing your skin from the inside out. Start your journey to clear, healthy skin with our FREE Eczema Relief Guide!

Want a more personalized approach? Book a one-on-one consultation with me at 30% off using code BLOG30 for a tailored evaluation and guidance specific to your needs.

GOT QUESTIONS?

Dr. Fong is going live to discuss this topic on her weekly Live with the Eczema Doc on Wednesday, November 27, at 10:30 AM PST! Watch the live or check out the replay here:

About the Author:

Dr. Diane Angela Fong, ND, is a naturopathic doctor specializing in eczema and chronic inflammatory conditions. She is the CEO and founder of Cleanbody, a wellness company dedicated to treating and preventing chronic diseases. Dr. Fong developed the Cleanbody Method, a transformative three-step process: Evaluate (uncovering the root causes of chronic disease through lab testing and comprehensive assessments), Optimize (strengthening health foundations by addressing nutrition, lifestyle, and toxic exposures), and Support (restoring optimal organ function through targeted healing protocols). Driven by a mission to educate and empower individuals with eczema and other chronic inflammatory diseases, Dr. Fong provides comprehensive support to help patients achieve lasting relief and better health. Learn more at www.cleanbody.health.

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