Red Light Therapy (RLT), also known as Photobiomodulation (PBM), is emerging as a groundbreaking therapeutic approach, garnering increasing interest across both medical and cosmetic fields. This non-invasive therapy, initially developed for plant growth in space, is now revolutionizing our approach to human cell regeneration and healing, making it a topic of much discussion in innovative treatments.

The evolution of RLT began with NASA’s experiments to grow plants in space. Researchers discovered that red light wavelengths effectively stimulated the growth and photosynthesis of plant cells. This groundbreaking finding paved the way for exploring RLT’s potential in human health, leading to its current widespread use in various therapeutic contexts.

Clinical Efficacy of RLT

Building upon the results observed in the study by Alexander Wunsch and Karsten Matuschka, a broader body of research supports the efficacy of Red Light Therapy (RLT) in various applications. This research indicates that RLT is particularly effective in skin rejuvenation, promoting cellular growth and repair. A notable aspect of RLT’s impact is its ability to increase collagen production, a critical protein for maintaining skin elasticity and firmness. This contributes significantly to the therapy’s effectiveness in improving overall skin health and appearance.

Additionally, studies have highlighted RLT’s role in reducing inflammation, offering benefits that extend beyond aesthetic enhancements.  Inflammation is a major challenge for people.  

It is suggested that inflammation is the root cause of 70% of mortality diseases.   The systemic anti-inflammatory benefits of photobiomodulation have shown in practice with our practitioners to help people with auto-immune disorders.   

Beyond cosmetic improvements, the therapeutic benefits of RLT have gained recognition in the medical community for wound healing. RLT has been observed in studies to accelerate the healing process, which is potentially attributed to its ability to stimulate blood circulation and enhance tissue repair. This aspect of RLT can be incredibly beneficial in clinical settings, especially in promoting faster recovery and healing.

ARRC LED’s use of Green PBMt actually adds to and improves the wound healing aspects of traditional red light therapy.  

However, it is crucial to note that while these studies provide a promising outlook for RLT, individual results can vary. The therapy’s effectiveness may depend on factors such as the specific condition being treated, the frequency and duration of treatment, and the type of RLT device used. Ongoing research continues to refine our understanding of RLT’s full potential and the optimal conditions for its use across both medical and cosmetic applications.

In-Depth on Skin Rejuvenation and Treatment

In the field of dermatology, RLT is being explored for its potential in addressing skin issues such as acne vulgaris and alopecia, as well as aiding in body contouring. The premise behind this therapy is its ability to encourage skin cells to regenerate more rapidly, which could promote healing and rejuvenation. Devices emitting low-energy red/near-infrared light are commonly used in these treatments. While clinical studies have shown promising results, indicating that RLT can be a safe and effective method for these applications, it is important to note that results can vary, and more research is needed to fully understand the extent of its efficacy and potential applications in skin health.

Understanding the Science Behind RLT

Photobiomodulation involves the activation of certain parts of cells in the body, known as chromophores. A key component in this process is an enzyme called cytochrome c oxidase, found in the mitochondria – often referred to as the powerhouse of the cell. These chromophores absorb red and near-infrared light, initiating a series of biological reactions.

ARRC LED goes beyond traditional Red Light Therapy by adding 2 additional chromophores to the CCO approach.   These two additional chromophores expand the benefit curve beyond what traditional red light therapy produces.

Central to the traditional PBMt approach of Red/infrared, is the role of cytochrome c oxidase in cellular respiration, especially in the electron transport chain, a crucial series of reactions for producing cellular energy. While cytochrome c oxidase is not adenosine triphosphate (ATP) itself, the main energy carrier in cells, it significantly contributes to the final steps of ATP production. It facilitates the transfer of electrons and the reduction of oxygen to water, an essential part of the mitochondrial process that generates ATP. This, in turn, leads to enhanced cell function, regeneration, and healing.

Expanding on Pain Management and Inflammation Reduction

The potential of Red Light Therapy (RLT) in managing pain has been explored in conditions like osteoarthritis and tendinitis. Various forms of red and infrared light therapy, delivered through a range of RLT devices, have shown promise in reducing pain and inflammation associated with these conditions. While the results are encouraging, it’s important to note that research is ongoing, and RLT’s effectiveness can vary. Nevertheless, its use in these areas offers a potential non-pharmaceutical alternative for pain management, aligning with the growing interest in less invasive treatment options.

Green adds a pain relief benefit that traditional RLT can not match.  Green affects the Cannibinoid pain pathway while Red/Infrared is analgesic to nerves.  

RLT for Hair Growth Stimulation

The application of Red Light Therapy (RLT) in promoting hair growth has become a significant area of interest, especially for conditions like androgenetic alopecia and other forms of hair loss. Studies focusing on specific wavelengths, particularly the 650-nm red light, have demonstrated potential in stimulating hair follicles. This stimulation not only encourages hair growth but also helps in reversing the effects of hair thinning. The non-invasive nature of RLT, often administered through various devices, offers a gentler alternative compared to some conventional hair loss treatments that can be more intrusive or chemically intensive.

An intriguing aspect of RLT in hair restoration is its possible role in enhancing scalp blood circulation, contributing to hair follicle health. Improved blood flow means an increased supply of nutrients and oxygen to the scalp, which is vital for hair growth and strengthening. While the effectiveness of RLT in hair growth can vary from person to person, and is dependent on the specific causes of hair loss, it represents a promising, non-pharmaceutical option for those exploring less invasive treatments. As research continues to progress, RLT is increasingly being recognized for its potential in addressing various hair loss conditions, offering a blend of scientific innovation and practicality.

Broader Implications and Future Directions

Current research is actively exploring new frontiers for Red Light Therapy (RLT), delving into areas such as its potential impact on mental health conditions like seasonal affective disorder (SAD). The use of RLT in addressing mood disorders presents an innovative approach, especially considering the non-invasive nature of the therapy. Preliminary findings suggest that the specific wavelengths used in RLT could influence brain chemistry in a way that alleviates symptoms associated with SAD, offering a potential adjunct or alternative to traditional treatments.

In the realm of sports medicine and physical therapy, RLT is also being investigated for its potential to enhance muscle recovery in athletes. The therapy’s ability to penetrate deep into tissues and possibly reduce inflammation and accelerate healing processes could be a game-changer for athletes, both in terms of recovery times and overall performance. This aspect of RLT not only interests sports professionals but also has implications for a broader range of physical rehabilitation scenarios.

The broadening scope of RLT research highlights its potential versatility and reinforces the importance of continuing to explore its applications. As we learn more about how RLT interacts with various biological systems, its role in both clinical and home settings could expand significantly, making it a crucial component of future therapeutic strategies.

Safety and Accessibility of RLT

One of the key advantages of Red Light Therapy (RLT) is its safety profile. As a treatment option, RLT stands out for its non-invasive nature and low risk of side effects, particularly when compared to treatments that involve radiation or invasive procedures. This safety aspect is a significant factor in its growing popularity, as it minimizes concerns often associated with more aggressive therapeutic approaches.

In addition to its safety, the accessibility of RLT has been steadily increasing. The advent of home-use devices has made this therapy more accessible to a wider audience. People can now experience the benefits of RLT in the comfort of their own homes, without the need to visit specialized clinics. This convenience is particularly appealing for those who require regular sessions, such as individuals managing chronic conditions or athletes undergoing frequent recovery treatments.

Furthermore, the variety of devices available on the market, ranging from full-body red light therapy beds to targeted lamps, means that RLT can be tailored to individual needs and preferences. This versatility not only enhances user experience but also broadens the range of conditions that can be addressed through this therapy. As awareness of RLT’s benefits continues to grow, and technology becomes more advanced, we can expect even greater accessibility and customization in RLT treatments, potentially making it a staple in both home-based care and clinical settings.


Red Light Therapy (RLT) emerges as a noteworthy addition in the realms of medical and cosmetic treatment, backed by a growing body of scientific research. The studies and clinical trials discussed highlight its potential in areas such as skin rejuvenation, pain management, and hair growth stimulation. However, it’s important to recognize that while RLT shows promising results, its efficacy can vary depending on individual circumstances, the specific conditions being treated, and the manner of application. This nuanced understanding underscores the importance of continued research, which is essential to fully grasp the scope and limitations of RLT. As the body of evidence grows, RLT may offer more refined and effective solutions, complementing traditional treatments and expanding the options available for non-invasive therapy.


A Controlled Trial to Determine the Efficacy of Red and Near-Infrared Light Treatment in Patient Satisfaction, Reduction of Fine Lines, Wrinkles, Skin Roughness, and Intradermal Collagen Density Increase


Photobiomodulation: The Clinical Applications of Low-Level Light Therapy


Mechanisms and Applications of the Anti-Inflammatory Effects of Photobiomodulation:


Red Light Therapy: Effectiveness, Treatment, and Risks


Hair Growth Promoting Effects of 650 nm Red Light Stimulation on Human Hair Follicles