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What is Red Light Therapy?

With the wealth of newfound tech built on gimmicks and quick sells, those who question ‘What is red light therapy?’ hold understandable concerns. Also referred to as photobiomodulation, Red Light Therapy is an emerging treatment that has quickly become popular. Like many others, you might have come across this term but aren't quite clear on what it involves. The scientific terms, such as "Photobiomodulation," can sometimes be difficult to understand. However, there's no need to feel overwhelmed. At Rojo, we aim to provide a clear and concise explanation of red light therapy, covering its fundamental principles, how it functions, and the potential benefits of this treatment for various individuals.

Definition and History of Red Light Therapy

Red light therapy is also commonly referred to as low-level laser therapy (LLLT) and photobiomodulation therapy. It's the process of applying red and near-infrared light to various parts of the body, providing a safe, painless and natural option for treating a wide range of conditions and physiological problems.

Red light therapy uses devices equipped with special LED bulbs that emit specific wavelengths. These purpose-built light devices range from hand-held units to larger, full-body systems that can be tailored to treat specific areas and effectively address individual needs.

The roots of red light therapy date back to 1967, when it was discovered by Endre Mester at Semmelweis University in Budapest, Hungary. Mester's original intention was to study whether lasers could cause cancer, and surprisingly led to the discovery of 'laser biostimulation'. In his study, Mester exposed shaved rats to low-power red light and found that they not only avoided cancer but also experienced accelerated hair growth, paving the way for this groundbreaking therapy.

What are the benefits?

Since its initial use, red light therapy has been an increasingly popular treatment primarily due to its quick and painless results. In order to better understand why this treatment has become so popular, here are some of the many benefits of red light therapy:
Stimulates healing for quicker, faster recovery
Aids in pain reduction
Helps with neurological issues such as Alzheimer’s and Parkinson’s
Elevates mood and sense of well-being
Boosts the immune system response
Helps with signs of skin tissue aging

Science Behind Red Light Therapy

Referred to as low-level laser therapy (LLLT) or photobiomodulation therapy, red light therapy is closely related to these terms, although there are subtle differences. It uses red and near-infrared light to treat a range of physical conditions. This non-invasive and natural approach is scientifically backed, completely safe and doesn't require surgical intervention.

Specifically, this treatment uses devices equipped with LED bulbs that emit specific wavelengths of light. These devices vary in size from portable handheld units to larger systems in your red light therapy panel that can cover the entire body. The variety of red light therapy devices available means that treatments can be tailored to the specific needs of each individual, ensuring optimal results.

The origins of this therapy date back to 1967, when it was discovered by Endre Mester at Semmelweis University in Budapest, Hungary. Mester was investigating whether lasers could induce cancer. Contrary to his expectations, he found that exposure to low power red light led to accelerated hair growth in rats, a phenomenon he termed 'laser biostimulation'. This seminal study paved the way for understanding the regenerative and healing potential of red light therapy as demonstrated in both animal and human studies.

How does Red Light Therapy work?

Red light therapy, also known as low level light therapy (LLLT), uses specific wavelengths of light for therapeutic purposes. Although red light therapy often uses LED lights, LLLT typically uses laser lights. The difference is in the light emission. LED light treatment produces a uniform, inconsistent colour of light, similar to the different wavelengths of sunlight, while laser waves produce a single, coherent wavelength that concentrates and focuses the light output.

Red light therapy devices typically use LED lights that emit red and near-infrared light within specific wavelength ranges, measured in nanometres (nm). These ranges are 620-660 nm for visible red light and 810-850 nm for near-infrared light. Conversely, LLLT devices emit laser light in the 600-1000nm range, which is milder than surgical lasers and doesn't produce heat. Higher wavelength devices are often preferred in professional settings due to their increased therapeutic effectiveness.

Selection of the appropriate wavelength is essential to ensure the safety and non-invasiveness of the therapy. Both LED-based red light therapy and LLLT lasers operate without heating the cells, making them safe and reliable with no significant adverse effects. This combination of LED technology and laser emission makes Red Light Therapy an ideal choice for people seeking a safe and effective treatment option.

Red Light Therapy Before and After

As mentioned above, the advantages of red light therapy offer a safe and non-invasive method of improving cellular health by using specific wavelengths of light to trigger the body's innate healing processes. This therapy facilitates improved cellular metabolism and reduces inflammation.

The key mechanism involves a photochemical reaction where red and infrared light stimulates the production of adenosine triphosphate (ATP) in the mitochondria, the energy centres of cells. The process of bathing specific areas of the body in therapeutic LED light activates the mitochondria, resulting in their revitalised function. At the same time, blood circulation increases. Cells throughout the body are energised and work at maximum capacity, leading to increased energy levels and a reduction in inflammation and pain. The result is a noticeable increase in overall energy levels and a reduction in inflammation and pain.

In essence, red light therapy effectively and gently stimulates cells, triggering a number of positive natural responses. This leads to multiple benefits including improved metabolism, reduced inflammation and improved cell function, all without invasive procedures or discomfort.

Who can experience the benefits of using Red Light Therapy?

Red light therapy can benefit everyone as a pain-free solution to a myriad health ailments and mood conditions. It is ideal for anyone looking to reduce pain and inflammation and increase their body’s ability to heal itself. Red Light therapy is also a fantastic choice for people who are seeking treatment outside of pharmaceuticals or surgery options.

While the following list does not include all the individual categories of people who have seen the benefits of red light therapy, this list does boast some of the patient groups that have all seen success and health benefits after starting this type of treatment.
  • Patients with Fibromyalgia

    Light therapy is an effective treatment option for people who have fibromyalgia or postherpetic neuralgia. These problematic and challenging-to-treat conditions are often debilitating. If left untreated, pain can continue and become a long-term and ongoing problem.

    Patients searching for a pain management solution are wise to consider LLLT. When red light therapy is targeted to the painful trigger points associated with fibromyalgia, patients have seen a dramatic decrease in their pain levels. This aids them in their recovery and encourages the reversal of their painful and exhausting condition.
  • People seeking skin rejuvenation

    Light therapy is a valuable and non-invasive treatment plan for those looking to combat signs of aging. Red light therapy helps to restore the skin’s youthful appearance by increasing cell regeneration. Sun exposure is a major cause of skin aging and the appearance of sagging skin. Red light therapy combats signs of aging by increasing collagen levels and improving skin elasticity.

    Red light therapy can assist in reducing wrinkle appearance by increasing collagen levels of the skin. As a result, skin elasticity is improved. LLLT is an excellent choice for people looking to improve their skin’s appearance with no reported side effects and no downtime for treatment.

    In addition to LLLT, red light therapy is becoming quickly popular amongst people looking to achieve a more youthful glow. Today, there are specially designed light therapy devices that specifically target wrinkles and other signs of
    skin aging.
  • Those with mood disorders

    Studies boast the benefits of red light therapy to help boost mood, reduce anxiety, and improve sleep quality by increasing melatonin levels. With mental health becoming more widely discussed, it is essential to know all the available treatment options available.

    Red light therapy’s ability to improve cellular functions means that it also increases cognitive functions as well. Effective treatment can help alleviate problems associated with depression and anxiety. In terms of improving mental health and wellness, red light therapy can be a benefit to all the following aspects:

    • Boosting energy levels
    • Effectively reduces anxiety
    • Maintaining a balanced mood
    • Clear mental cognition
    • Combats seasonal depression
  • Patients with neurological problems

    Light therapy has shown success in combating mild to moderate dementia and Alzheimer’s symptoms. A hypothesis for the cause of Alzheimer’s disease is amyloid deposits in the brain. These deposits consist of an abnormal group of proteins and cause neural damage. Light therapy has proven to be able to successfully decrease the volume of these deposits in neuroblastoma cells.

    After utilizing red light therapy treatments, patients saw a significant improvement in assessment scores used to examine the progression of Alzheimer’s disease. Patients also experienced various improvements in their physical and emotional well-being. They reported having improved sleep, decreased anxiety, and better overall fitness, and there were no adverse side effects were reported.
  • Wound healing and muscle recovery

    Arguably one of the most popular reasons for seeking LLLT or red light therapy; bodily injuries, painful joints, and other soft tissue problems lead many people to discover its benefits. From frustrating low back pain to arthritis, studies repeatedly show the benefits of red light therapy to be used as an effective treatment for healing the body.

    Both red and near-infrared light therapy has proven effective in promoting the healing of skin wounds. Phototherapy has repeatedly demonstrated itself as beneficial for wound treatment by decreasing inflammation while stimulating an increase in collagen production and angiogenesis. Depending on the type of skin or muscle damage a person is struggling with, LED red light therapy devices or LLLT infrared tools will be used based on the appropriate treatment options.

     In addition to the ability to generate rapid body healing, red light therapy is also advantageous for muscle recovery. Surprisingly, studies suggest that red light therapy, both before and after physical activity, may increase athletic performance! Phototherapy benefits athletes because it increases muscle mass that is attained after training while lowering the

Conclusion

Red Light therapy is supported by science and has thousands of scientific research studies to support its claims. As a non-invasive treatment, it is an ideal option for anyone looking to better their health. From chronic inflammation to mood disorders, red light therapy can help benefit everyone. With targeted treatments available, you can expect to see results quickly.


LLLT works by increasing cellular regeneration and improving the cell’s ability to function. These improvements allow for various improvements in health and wellness. With no downtime associated with treatment, it is an easy way to better your overall health and wellness. If you’re looking for a science-supported treatment option that does not require invasive surgery or pharmaceutical medicines, then red light therapy is the solution you are seeking.
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Disclaimer: All ROJO light therapy products are considered low risk and designed for general health and wellbeing, they are not intended to cure or prevent specific medical conditions, diseases, or prescribe any course of action. The content on this website is for informational or educational purposes only and does not substitute for professional medical advice or consultations with healthcare professionals. Before using our products, a health professional should be consulted, we are not medical professionals, so please contact your GP or health practitioner for medical advice.
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