What Is Red Light Therapy? Overview, Benefits, Uses at Home, Devices, and Risks

Red light therapy (RLT), also known as photobiomodulation (PBM), is a non-invasive treatment that uses low-level wavelengths of red, near-infrared (NIR) and extended near-infrared (exNIR) light to stimulate cellular function. It is widely used for improving skin health, reducing inflammation, alleviating pain, and promoting tissue repair.

The therapy works by penetrating the skin and stimulating mitochondria, the energy-producing centers of cells, to enhance adenosine triphosphate (ATP) production, which fuels cellular repair and regeneration. Unlike ultraviolet (UV) light, RLT does not damage the skin and is considered safe for most individuals when used correctly.

At-home red light therapy devices have gained popularity due to their convenience and cost-effectiveness compared to clinical treatments. These devices include handheld wands, LED masks, panels, and full-body beds that emit therapeutic wavelengths ranging from 630 to 1064 nanometers (nm). They are commonly used for skin rejuvenation, pain relief, muscle recovery, and sleep improvement.

Red light therapy is generally safe with minimal side effects when used properly. However, overuse or improper application leads to mild skin irritation, redness, or itching. Beginners are recommended to consult a dermatologist or healthcare provider to ensure safety and effectiveness tailored to individual needs.

This think-piece explores red light therapy in detail with the goal of providing a comprehensive, scientifically grounded, and user-focused overview. It explains how red light therapy works at the cellular level, including its interaction with mitochondria and ATP production.

The article examines RLT’s applications across skin health, anti-aging, pain management, mental health, fitness conditions, injuries, elderly care, and sleep improvement. It further outlines how to use RLT at home, including session frequency, treatment timing, and expected result timelines. Safety considerations, potential side effects, and device comparisons such as LED masks, handheld tools, panels, and full-body beds are also covered.

Additionally, the article discusses LED technologies, optimal wavelengths, cost estimates for home setups, supporting scientific research, and expert insights.

What Is Red Light Therapy?

Red light therapy is a non-invasive treatment that uses low-level red or near-infrared light to treat skin conditions, pain, and other medical conditions. Red light therapy works by penetrating the skin to reach mitochondria, the energy-producing structures in cells, enhancing their ability to produce adenosine triphosphate (ATP), the primary energy source for cellular functions.

The origins of red light therapy trace back to early experiments with light-based treatments. Danish physician Niels Ryberg Finsen pioneered its therapeutic use in 1896 to treat lupus vulgaris, earning him the Nobel Prize in 1903.

Modern advancements began in the 1960s when Hungarian scientist Endre Mester developed low-level laser therapy (LLLT), which evolved into today's RLT. NASA further popularized its use in the 1990s by studying its effects on wound healing and plant growth in space.

RLT has diverse applications across health and wellness. It is widely used for skin rejuvenation therapy, helping reduce wrinkles, scars, and acne by stimulating collagen production and improving skin elasticity. It also aids muscle recovery by promoting blood flow and reducing soreness after exercise.

Additionally, it is effective for chronic pain management, including conditions like arthritis and tendinopathy, by alleviating inflammation and promoting tissue repair. Emerging research even suggests benefits for weight management, mental health, hair growth, sleep quality, and overall well-being.

How Does Red Light Therapy Work?

Red light therapy works by delivering specific wavelengths of light, typically in the range of 630 nm (red light) and 1064 nm (extended infrared light), to penetrate the skin and reach deeper tissues. These wavelengths stimulate mitochondria's energy production, enhancing the cell's ability to produce adenosine triphosphate (ATP), which powers cellular processes.

The mechanism behind red light therapy is rooted in its interaction with chromophores, light-sensitive molecules found in cells. This process is particularly beneficial for collagen stimulation, as it encourages the production of this essential protein, improving skin elasticity and reducing wrinkles and scars.

Red light therapy is delivered through various light-emitting diodes (LEDs), emitting consistent and safe light wavelengths. These devices range from handheld units to full-body panels and are designed for targeted or widespread treatment

Sessions typically last 10-20 minutes and are painless, with no downtime required. The non-invasive nature of red light therapy makes it a popular choice for improving skin health, relieving pain, and supporting muscle recovery.

What Conditions Does Red Light Therapy Help Treat?

Red light therapy helps treat various conditions, including skin conditions, anti-aging, pain and inflammation, mental health issues, fitness conditions, injuries, elderly problems, and sleep conditions. Each of them is explained briefly below: 

1. Skin Conditions

Red light therapy is widely recognized for its ability to treat skin conditions such as acne, scars, and psoriasisBefore-and-after results often show noticeable improvements in skin texture and tone after consistent use of RLT. Patients report fewer breakouts, diminished scars, and an overall healthier complexion.

The therapy works by penetrating the skin's layers to stimulate collagen production and fibroblast activity, which is essential for skin repair and rejuvenation. Research shows that RLT reduces inflammation, improves circulation, and accelerates wound healing.

For acne treatment, it reduces sebum production and irritation while promoting tissue regeneration. Studies involving photobiomodulation therapy highlight its effectiveness in reducing redness and scarring.

In a study reviewed by the American Academy of Dermatology (AAD), 90% of patients who underwent eight RLT sessions over a four-week period reported improved skin texture, reduced redness, and lighter dark spots. These results led the FDA to approve several red-light devices for at-home use in treating signs of aging and skin discoloration.

2. Anti-Aging

One of the most popular applications of red light therapy is combating signs of aging. By stimulating mitochondria's energy production, RLT enhances cellular repair processes that counteract wrinkles, fine lines, and sagging skin. It promotes the production of collagen and elastin, proteins that maintain skin elasticity and firmnessA 2014 randomized controlled trial by Alexander Wunsch and Karsten Matuschka, involving 136 subjects, found that red and near-infrared light therapy significantly improved skin texture, reduced roughness, and increased collagen density without side effects, confirming its safety and efficacy for skin rejuvenation.

Clinical studies have demonstrated significant reductions in wrinkle depth and improved skin elasticity after regular sessions. Many users incorporate RLT into their skincare routines as an effective anti-aging solution.

3. Pain and Inflammation Management

RLT has been extensively studied for its role in alleviating pain caused by chronic conditions like arthritis, tendinopathy, and fibromyalgia. Targeting inflamed tissues with low-level red or near-infrared light reduces inflammation and promotes cellular repair. This makes it an effective tool for managing joint pain, muscle stiffness, and nerve-related discomfortFor arthritis patients, RLT helps reduce morning stiffness and improves joint mobility by stimulating blood flow to affected areas. It has also shown improvements in treating temporomandibular dysfunction (TMD), significantly reducing jaw pain and tenderness.

A 2017 study by Dr. Michael R. Hamblin of Harvard Medical School and the Wellman Center for Photomedicine highlights that red and near-infrared light, when absorbed by mitochondrial chromophores such as cytochrome c oxidase, enhances ATP production and modulates reactive oxygen species (ROS), thereby reducing inflammation in various tissues.

4. Weight Loss

Red light therapy supports weight management and fat reduction. While not a standalone solution, studies show it complements diet and exercise by boosting cellular energy and metabolic function. It uses red and near-infrared light to target fat cells, promoting the release of stored triglycerides for natural elimination through metabolic processes.

Clinical trials have shown that regular sessions can reduce waist size and body fat percentage. The therapy also improves circulation and lowers inflammation, supporting metabolic health. Users report increased energy and reduced muscle fatigue, helping them stay active. As part of a healthy routine, RLT offers a non-invasive approach to support weight loss.

A 2016 clinical study by Dr. Michael R. Hamblin, affiliated with Harvard Medical School and the Wellman Center for Photomedicine, demonstrated that a six-week low-level laser therapy (LLLT) protocol effectively reduced waist, hip, thigh, and upper abdomen circumference in participants, highlighting LLLT's potential as a non-invasive body contouring treatment.

5. Mental Health

Emerging research highlights the potential of red light therapy in improving mental health conditions such as depression and anxiety. By enhancing mitochondrial activity in brain cells, RLT boosts serotonin production, a neurotransmitter responsible for mood regulation, and reduces inflammation associated with mental health disordersA 2024 review by Qipei Ji and colleagues from Chengdu University found that red light therapy significantly reduced depressive symptoms in 407 participants across 11 clinical trials, proving to be a safe, non-invasive treatment for mood disorders.

6. Hair Growth

Red light therapy supports hair growth and helps treat thinning hair. It penetrates the scalp to activate mitochondria in hair follicle cells, increasing ATP production. This fuels cell activity and helps shift follicles from the resting phase (telogen) to the growth phase (anagen).

Clinical trials show increased hair density, reduced shedding, and improved scalp health. A 2014 randomized study in Lasers in Surgery and Medicine reported significant gains in hair count after 24 weeks of red light therapy compared to placebo. By improving blood flow and reducing inflammation, RLT creates better conditions for regrowth. Devices like laser caps and red light panels allow users to follow treatment routines at home without clinic visits.

7. Fitness Conditions

Athletes frequently use red light therapy to enhance performance and recovery. The therapy improves circulation, reduces delayed onset muscle soreness (DOMS), and accelerates tissue repair by boosting ATP production in muscle cells. This makes it particularly effective for muscle recovery treatment post-workout or injury.

A study by the Journal of Strength and Conditioning Research involving young men found that using RLT before strength training led to greater increases in muscle size and strength compared to control groups.

8. Injuries

RLT is a valuable tool for speeding up the healing process of sports injuries such as sprains, strains, ligament damage, and contusions. It stimulates cell regeneration at the injury site by penetrating deep into tissues with wavelengths around 660 nm (red light) or 850 nm (near-infrared light).

Research involving athletes demonstrates that RLT cuts recovery times nearly in half compared to conventional treatments. Its ability to reduce inflammation while promoting new cell growth makes it an excellent option for soft tissue injuries and post-surgical recovery.

NASA's experiments with red and near-infrared LEDs revealed significant improvements in wound healing and tissue regeneration. The researchers found that these wavelengths accelerated the healing of oxygen-deprived wounds by over 40% in rats while promoting cell growth in skin, bone, and muscle cultures.

9. Elderly Problems

For seniors facing age-related challenges like chronic pain, poor skin health, cognitive decline, or sleep disturbances, red light therapy offers a non-invasive solution with minimal side effects. It addresses common issues such as arthritis by reducing inflammation and improving joint function.

RLT enhances blood flow to the brain, potentially supporting cognitive functions like memory retention and mental clarity in older adults. It increases collagen production and aids wound healing, a critical benefit for seniors with slower regenerative capacities.

10. Sleep Conditions

Red light therapy provides benefits for sleep disorders such as insomnia and circadian rhythm disruptions by promoting melatonin production and improving sleep quality. Unlike blue or white light that suppresses melatonin production (a hormone essential for sleep), red light helps regulate the body's natural sleep-wake cycle without disrupting melatonin levels.

Using RLT before bedtime improves sleep quality by promoting relaxation and reducing sleep inertia-the grogginess experienced upon waking. Devices like red light masks or bedside panels are often used for this purpose.

Leveraging advancements in light-emitting diodes (LEDs) technology and understanding optimal wavelengths (630 nm-1064 nm) helps RLT continue to gain popularity as a safe and effective approach for improving physical and mental health outcomes across diverse populations.

How Do You Use Red Light Therapy at Home?

Below is a step-by-step guide on using red light therapy at home. 

1. Choose the Right Device: Select a device that suits your needs, whether a handheld device for targeted treatment or a full-body panel for comprehensive coverage. Ensure the device emits therapeutic wavelengths (typically 630 nm and 660 nm for red light, 810 nm and 830 nm for lower near-infrared light, 850 nm for mid near-infrared light, and 1064 nm for extended near-infrared light) and is FDA-approved for safety and efficacy.
2. Prepare Your Skin or Target Area: Cleanse your skin to remove any makeup, oils, or dirt that could block the light's penetration. Ensure the target area is clean and dry for pain relief or muscle recovery.
3. Set Up Your Space: Choose a quiet, comfortable area where you will be able to relax during the session. Position the device 6 inches to 2 feet away from your body to ensure optimal light intensity. Use protective eyewear to shield your eyes from the bright LEDs.
4. Start with Short Sessions: Begin with 10-20 minutes per session, 3-5 times per week. Gradually increase the duration and frequency as your body adjusts to the therapy.
5. Relax During the Session: Sit or lie comfortably while the device works on your skin or target area. Listen to calming music or practice mindfulness to enhance relaxation during the session.
6. Post-Treatment Care: After completing your session, clean the device as recommended by the manufacturer to maintain hygiene. Moisturize your skin if needed, especially after anti-aging or skin rejuvenation sessions.
7. Be Consistent: Consistency is key to seeing results with red light therapy. Stick to your schedule and monitor progress over time by taking before-and-after pictures.

Before vs. After Procedure

Use red light therapy alongside other wellness practices like proper skincare routines, exercise, and a balanced diet for enhanced results. Also, track progress by observing changes in skin texture, pain levels, or muscle recovery over time.

When Should You Use Red Light Therapy?

Red light therapy for skin concerns, such as improving skin tone or reducing acne, is most effective after cleansing your face in the morning or evening. For muscle recovery treatment, it is most effective to use it post-workout to reduce soreness and inflammation. An evening session is ideal for RLT for better sleep quality, as red light helps regulate melatonin production and promotes relaxation. For chronic pain management, schedule sessions during flare-ups or as part of a consistent routine to reduce inflammation and discomfort.

How Long Should You Use Red Light Therapy?

Most experts recommend sessions lasting 10-20 minutes per treatment area, 3-5 times per week. Devices with higher power density (measured in mW/cm²) may require shorter exposure times, while lower-powered devices may need longer sessions. Always follow the manufacturer's guidelines for at-home red light therapy to avoid overexposure or under-treatment.

How Long Does it Take to See Results from Red Light Therapy?

For skin rejuvenation therapy, improvements in texture and tone are noticed within 4-6 weeks of consistent use. Pain relief benefits may be experienced after just a few sessions, especially for acute conditions like sports injuries. However, chronic issues like arthritis may require several weeks of regular use before noticeable improvements are seen. Studies on photobiomodulation therapy suggest that long-term consistency is key to achieving optimal results.

Can You Use Red Light Therapy Every Day?

Yes, red light therapy is generally used daily, provided you adhere to recommended session durations and avoid overexposure. Daily use is particularly beneficial for conditions like chronic pain, wound healing, and anti-aging effects.

However, some users prefer spacing out treatments (e.g., every alternate day) to allow the body time to respond and recover between sessions. If you are new to RLT, start with 3-5 sessions per week and gradually increase frequency based on your comfort level and results.

Is 10 Minutes of Red Light Therapy Enough for Visible Results?

For many applications, 10 minutes of red light therapy per treatment area is sufficient for visible results when using a high-quality device with appropriate wavelengths (630 nm and 660 nm for red light, 810 nm and 830 nm for lower NIR, 850 nm for mid NIR, and 1064 nm for extended NIR). Shorter sessions may be more effective for targeted treatments, such as facial rejuvenation or small areas of pain relief. However, larger treatment areas or deeper tissue issues may require longer exposure (15-20 minutes).

What Devices Are Used for Red Light Therapy at Home?

The at-home red light therapy devices include LED masks, handheld devices, LED panels, and full-body beds designed to cater to specific needs and preferences. Below is a brief overview of each

LED Masks

LED masks are ideal for facial treatments, targeting issues like acne, wrinkles, and uneven skin tone. These masks fit snugly over the face and emit therapeutic wavelengths of red and near-infrared light. LED masks are designed to stimulate collagen production and improve skin elasticity with just a few minutes of use per session. These masks are perfect for those seeking targeted skincare solutions with minimal effort.

Handheld Devices

Handheld devices are portable and versatile, making them suitable for treating localized areas such as sore muscles or specific skin concerns. These devices often feature adjustable settings for different wavelengths (e.g., 660 nm red light and 850 nm near-infrared light). Handheld devices are great for users who need flexibility and portability in their treatments.

LED Panels

LED panels provide broader coverage, which is ideal for full-body treatments or larger areas like the back or legs. These panels emit therapeutic wavelengths to improve skin health, reduce inflammation, and enhance muscle recovery. Red light therapy LED panels suit individuals looking for comprehensive treatments in a home setting.

Full-Body Beds

Full-body red light therapy beds offer an immersive experience by exposing the entire body to therapeutic light. These beds are particularly beneficial for managing chronic pain, improving circulation, and supporting post-workout muscle recovery. Although commonly used in wellness centers, infrared sauna beds are also available for home use. Full-body beds require significant space and investment but provide unparalleled full-body treatment.

What Types of LEDs Are Used for Red Light Therapy?

Red light therapy devices use specialized LED technologies designed to emit therapeutic wavelengths efficiently, safely, and uniformly. The main types of LEDs used include:

• Single-Wavelength LEDs: Emit a specific therapeutic wavelength such as 630 nm, 660 nm, or 850 nm. Ideal for targeted treatments like skin rejuvenation or joint pain relief.
• Dual-Wavelength LEDs: Combine two wavelengths (e.g., 660 nm + 850 nm) in a single chip. These are popular in modern RLT panels as they allow for simultaneous treatment of both superficial and deep tissues.
• SMD (Surface-Mounted Device) LEDs: Compact and efficient, SMD LEDs are mounted directly onto circuit boards. They support multi-wavelength configurations and provide high-intensity light output with good heat management.
• Matrix or Modular LED Arrays: Found in full-body panels or beds, these arrays use multiple LED chips arranged in a grid. They ensure even light distribution across larger areas for systemic benefits.
• High-Power LEDs: Used in clinical or professional-grade devices, these LEDs have higher irradiance (mW/cm²), enabling faster treatment sessions and deeper tissue penetration.

These LEDs are engineered to meet therapeutic standards for light intensity, wavelength accuracy, and thermal stability. Depending on the device type-handheld, face mask, panel, or bed-manufacturers choose the appropriate LED configuration to maximize safety, efficacy, and treatment versatility.

What Wavelengths are Used for Red Light Therapy?

The most effective wavelengths for RLT are 630 nm and 660 nm (red) and 810 nm and 830 nm (lower NIR), 850 nm (mid NIR), and 1064 nm (extended NIR) as these penetrate the skin and tissues to different depths and provide unique therapeutic benefits.

1. 630 nm (Red Light): Penetrates ~1-2 mm; supports skin clarity and inflammation reduction; used for acne and superficial skin issues.
2. 660 nm (Red Light): Penetrates ~2-3 mm; enhances collagen production, dermal healing, and skin texture; used for anti-aging and scar reduction.
3. 810 nm (Lower NIR): Penetrates ~5-10 mm; stimulates mitochondrial ATP production; used for neurological support and bone healing.
4. 830 nm (Lower NIR): Penetrates deeply; optimally absorbed by cytochrome c oxidase; reduces inflammation and chronic pain; used in soft tissue repair.
5. 850 nm (Mid NIR): Penetrates ~10 mm or more; improves circulation and deep tissue healing; used in muscle recovery and joint therapy.
6. 1064 nm (Extended NIR): Offers deepest tissue penetration among therapeutic NIR wavelengths; used for vascular repair, pain relief, and circulation.

Other Wavelengths Used in RLT Devices

• 590 nm: Often used for skin rejuvenation and reducing redness.
• 610 nm: Targets surface-level skin tone and texture improvement.
• 940 nm: Penetrates deeply; used in some clinical-grade RLT for musculoskeletal pain.
• 980 nm: Targets water molecules; used for thermal stimulation and deep tissue applications (more heat-producing).

The therapeutic effects of these wavelengths are due to their ability to be absorbed by chromophores in cells, particularly in mitochondria. This absorption enhances ATP production, which fuels cellular repair and regeneration. The combination of red (630 and 660 nms), near-infrared (810, 830 and 850 nms), and extended near-infrared (1064 nm) light is ideal for comprehensive treatments targeting both surface-level skin concerns and deeper tissue issues.

How Do You Choose the Right Red Light Therapy Device?

Selecting the right red light therapy device depends on your treatment goals. For a deeper breakdown, see 11 factors to consider before choosing red light therapy devices. Among the most important factors are wavelengths, irradiance, treatment area, portability, and certifications.

1. Wavelengths: Ensure the device emits therapeutic wavelengths 630-660 nm for skin concerns, and 850 nm to 1064 nm for deeper tissue issues.
   
2. Irradiance: Look for devices with 25-120 mW/cm² irradiance levels for effective energy delivery.
3. Treatment Area: For targeted use (e.g., face or joints), handheld devices or masks suffice. For larger areas or full-body treatments, opt for panels or beds.
4. Portability: Choose compact devices if you travel frequently or need flexibility.
5. Certifications: Ensure the device is FDA-cleared and backed by clinical research.

Also, devices with timers, adjustable settings, and user-friendly controls are more convenient for consistent use.

What Is the Cost to Set Up Red Light Therapy at Home?

The cost of setting up red light therapy at home in the USA significantly depends on the type and size of the device, its features, and the intended use.

1. Small Devices (Targeted Use)
   • Handheld Devices: These are portable and ideal for treating small areas like the face, joints, or specific skin concerns. Prices start at around $100 for basic models and go up to $350 or more advanced options with dual wavelengths and higher irradiance levels.
   • Face Masks: Designed for skin rejuvenation and anti-aging purposes, red light therapy masks cost between ₹$150 and $600, depending on features like adjustable wavelengths and portability.
2. Medium-Sized Panels: These panels are suitable for treating larger areas such as the back or legs. They often include multiple wavelengths and adjustable settings. Prices range from $500 to $1200.
3. Large Full-Body Panels: Full-body panels are designed for comprehensive treatments targeting skin health, pain relief, and muscle recovery. These panels are stationary and provide high irradiance for efficient therapy sessions. Costs range from $2000 to over $4500.
4. Specialized Devices: Devices like therapy caps or mats cater to specific needs, such as hair growth or pain relief in localized areas. Costs are typically between $400 and $1800.

Affordable handheld devices or masks suffice for targeted treatments or skin care routines. However, larger panels or beds are necessary for full-body treatments addressing pain relief or muscle recovery, but come at a higher price point.

Does Science Support Red Light Therapy?

A growing body of scientific evidence supports red light therapy (RLT), though its efficacy varies depending on the condition being treated. RLT works by exposing the body to low-wavelength red and near-infrared light, which penetrates the skin and stimulates cellular processes, particularly in the mitochondria. This mechanism, known as photobiomodulation, has shown promising results in areas such as skin rejuvenation, wound healing, and pain relief. Below are some key pieces of evidence supporting red light therapy.

1. Skin Health: A study published in ScienceDirect found that RLT significantly improved skin texture, reduced wrinkles, and increased collagen density after 30 sessions. Another study demonstrated a 23.8% reduction in skin roughness after 84 days of treatment with red light photobiomodulation.
2. Pain Relief: NASA-supported experiments revealed that red light therapy accelerated healing in musculoskeletal injuries by over 40% compared to control groups.
3. Wound Healing: Studies indicate that RLT can speed up wound healing by stimulating new blood vessel formation and enhancing cellular repair mechanisms.
4. Hair Growth: Research has demonstrated that red light therapy can promote hair regrowth in individuals with Androgenic alopecia (known as pattern hair loss). Studies using wavelengths between 650-660 nm showed hair density and thickness improvements.
5. Cognitive Function: Preliminary evidence suggests that RLT may improve cognitive function in people with dementia by enhancing mitochondrial function in brain cells. However, these findings are based on small-scale studies that require further validation.

Individuals should consult healthcare professionals before starting RLT treatments for the best results and safety assurance.

Does Red Light Therapy have Side Effects?

Red light therapy (RLT) is generally safe when used correctly, but it sometimes has mild side effects in some cases. Common issues include skin irritation, redness, or itching, particularly for individuals with sensitive skin or those who overuse high-intensity devices

Eye strain or damage is another potential risk if protective goggles are not worn during treatment. Additionally, people taking photosensitizing medications, such as certain antibiotics or lithium, may experience heightened sensitivity to light, which could exacerbate skin irritation

What Do Dermatologists Say About Red Light Therapy?

Dermatologists generally view red light therapy as a promising tool for improving skin health, reducing inflammation, and addressing conditions like acne and signs of aging. According to experts like Dr. Heather Rogers, RLT stimulates collagen production and enhances skin elasticity, which can reduce wrinkles and improve overall texture over time

It is also used for treating rosacea, scars, and post-procedure recovery due to its anti-inflammatory properties. However, dermatologists caution that results are often subtle and require consistent use over several weeks or months

Dr. Dawn Davis of Mayo Clinic advises consulting a dermatologist before starting RLT, particularly for individuals with sensitive skin or underlying conditions like lupus or melasma. She also emphasizes the importance of using FDA-cleared devices to ensure safety and efficacy.

Who Should Not Use Red Light Therapy?

Pregnant women are generally advised to avoid RLT on the abdomen due to limited research on its safety during pregnancy. Individuals with photosensitivity caused by conditions like lupus or medications such as antibiotics should also avoid RLT, as it may worsen their symptoms. Cancer patients should refrain from using RLT on malignant tumors because it could potentially stimulate cell proliferation

What Should You Avoid After Red Light Therapy?

After a red light therapy session, certain precautions should be taken to maximize its benefits and avoid potential side effects. It is recommended to avoid using retinoids or exfoliating products immediately after treatment, as these can irritate the skin further. Treated skin may also become more sensitive to sunlight, so applying sunscreen with SPF 30+ is crucial if exposure to sunlight cannot be avoided after a session

Does Red Light Therapy Really Work?

Red light therapy has shown efficacy in various applications, but often requires consistent use over time for noticeable results. Studies have demonstrated its ability to improve skin health by stimulating collagen production and reducing inflammation, leading to a smoother texture and fewer wrinkles or scars. It has also been shown to alleviate pain associated with arthritis and accelerate muscle recovery by enhancing blood flow and reducing oxidative stress in tissues

Do At-Home Red Light Therapy Devices Work?

Yes, at-home red light therapy is particularly effective for skin concerns, such as improving texture and reducing fine lines. Still, it sometimes does not deliver the same intensity required for deeper tissue treatments like pain relief or muscle recovery.

---

Scientific References & Studies

1. https://books.google.com/books/about/Phototherapy_1_the_Chemical_Rays_of_Ligh.html?id=Ou40AQAAMAAJ
2. https://www.sciencedirect.com/science/article/pii/S0738081X11003543
3. https://www.laserpaintherapy.com.au/wp-content/uploads/2017/10/Prof-Endre-Mester-Father-of-PBM.pdf
4. https://spinoff.nasa.gov/NASA-Research-Illuminates-Medical-Uses-of-Light
5. https://pmc.ncbi.nlm.nih.gov/articles/PMC3926176/
6. https://pmc.ncbi.nlm.nih.gov/articles/PMC4126803/
7. https://pmc.ncbi.nlm.nih.gov/articles/PMC4479368/
8. https://www.sciencedirect.com/science/article/abs/pii/S0190962203014725
9. https://books.google.com/books/about/Healing_with_Red_Light_Therapy.html?id=FBbaDwAAQBAJ
10. https://pmc.ncbi.nlm.nih.gov/articles/PMC5523874/
11. https://pmc.ncbi.nlm.nih.gov/articles/PMC4928454/
12. https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2023.1267415/full
13. https://onlinelibrary.wiley.com/doi/full/10.1002/lsm.22277
14. https://journals.lww.com/nsca-jscr/fulltext/2019/02000/effects_of_light_emitting_diode_therapy_on_the.16.aspx
15. https://www.jstage.jst.go.jp/article/islsm/25/1/25_16-OR-03/_article
16. https://www.sciencedirect.com/science/article/abs/pii/S0738081X19300756
17. https://www.sciencedirect.com/science/article/abs/pii/S1773224722006621
18. https://epublications.marquette.edu/cgi/viewcontent.cgi?article=1005&context=dentistry_fac
19. https://www.doctorrogers.com/blogs/blog/one-minute-clinic-red-light-therapy
20. https://newsnetwork.mayoclinic.org/discussion/mayo-clinic-minute-dermatologist-explains-light-therapy-for-skin/