Take a look about how light therapy can reduce inflammation and feel better.
Inflammation is one of the body's essential protective responses. When tissue is stressed or damaged, the immune system activates a coordinated response involving immune cells, signaling molecules, blood vessels, and tissue-repair processes.
The problem isn't inflammation itself. The goal is balance. When inflammatory signaling becomes excessive or persists longer than necessary, it can contribute to ongoing tissue stress and discomfort.
Photobiomodulation (PBM)—the use of specific wavelengths of red and near-infrared light—is being studied for its ability to influence cellular and immune signaling associated with inflammation. Research suggests that PBM may help regulate inflammatory responses rather than simply suppressing them.
How Can Light Influence Inflammation?
PBM appears to interact with cells through several interconnected biological pathways. Red and near-infrared photons can influence mitochondrial activity, nitric oxide signaling, reactive oxygen species, calcium signaling, and downstream cellular pathways.
These signals can affect the activity of immune cells and the production of inflammatory mediators. Research has particularly focused on pathways such as NF-κB, as well as inflammatory cytokines including TNF-α, IL-1β, and IL-6. In activated inflammatory models, PBM has been associated with reduced inflammatory signaling and changes in antioxidant defenses.
This is an important distinction: PBM isn't thought to work like a conventional anti-inflammatory drug. Instead, the evidence suggests that light can act as a biological signal that helps modulate cellular responses.
Reducing Oxidative Stress
Inflammation and oxidative stress are closely connected.
During an inflammatory response, cells can produce increased amounts of reactive oxygen and nitrogen species. When these molecules exceed the body's ability to control them, oxidative stress can contribute to cellular damage and prolong inflammatory signaling.
PBM appears to have a potentially useful relationship with this process. Research indicates that appropriate light exposure can influence antioxidant defenses and oxidative signaling, potentially helping cells regain a healthier redox balance.
Interestingly, PBM can produce a small, temporary increase in reactive oxygen species that acts as a signaling event. In stressed or inflamed tissue, however, studies have reported reductions in oxidative stress and inflammatory markers. This helps explain why dose matters: PBM has a well-described biphasic response, meaning the biological effect can change depending on how much light is delivered.
Inflammation & Recovery
The potential anti-inflammatory effects of PBM are one reason researchers are investigating red and near-infrared light for muscle recovery, joint health, tissue repair, and other applications.
For example, research examining musculoskeletal conditions has reported changes in inflammatory cytokines and other inflammatory pathways following PBM. Reviews of the literature describe potential effects on mediators such as TNF-α, IL-6, and IL-1β, while emphasizing that treatment parameters can substantially influence the outcome.
This may be particularly relevant following physical activity. Exercise naturally creates temporary inflammation and oxidative stress as part of the body's adaptation and recovery process. PBM is being studied as a complementary approach that may help support the body's ability to manage these responses.
Local Effects vs. Whole-Body Effects
One important consideration is where the light is applied.
Much of the research has examined localized PBM, where light is delivered directly to the area being studied. Evidence that a localized treatment produces broad systemic anti-inflammatory effects is considerably less established.
Recent clinical research continues to investigate whether PBM can influence systemic inflammatory biomarkers. Some studies have reported changes in markers such as IL-6, but the evidence remains limited for many systemic applications and varies substantially between conditions and treatment protocols.
For this reason, it is more scientifically appropriate to describe PBM as a technology that may help modulate inflammatory processes in treated tissues, rather than claiming that red light therapy eliminates inflammation throughout the body.
Why Dose Matters
More light isn't necessarily better.
The biological response to PBM depends on several factors, including:
- Wavelength
- Irradiance
- Treatment duration
- Total energy delivered
- Treatment frequency
- Distance from the light source
- The tissue being treated
Different studies use different combinations of these parameters, which is one reason results aren't always consistent from one study to another.
The Science Is Still Evolving
The research surrounding PBM and inflammation is promising, particularly at the cellular and preclinical level. Human clinical evidence is growing, but the strength of evidence varies significantly depending on the condition being studied.
An umbrella review of randomized clinical-trial meta-analyses covering more than 9,000 participants found evidence of PBM effects across a range of health outcomes, while also highlighting differences in evidence quality and certainty between applications.
That makes the most responsible conclusion a measured one:
Red and near-infrared light may help support the body's natural regulation of inflammatory and oxidative processes. Rather than acting as a conventional anti-inflammatory medication, PBM appears to influence cellular signaling pathways that participate in inflammation, recovery, and tissue repair.
Light as a Biological Signal
Inflammation is complicated. It involves thousands of cellular interactions working together to protect and repair the body.
PBM offers a fascinating way to interact with those processes—not by forcing the body in one direction, but by using light as a signal to influence cellular behavior.
The science is still evolving. But the potential is compelling: harnessing specific wavelengths of light to support the body's own systems for balance, recovery, and repair.
The Latest Research on Red Light Therapy
Don't take our word for it, here's a link to the latest in Red Light Therapy scientific research.
Frequently asked questions
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How often should I use red light therapy?
For most devices, we recommend following the manufacturer's instructions. Many people incorporate red light therapy into their wellness routine 3–7 times per week, with sessions typically lasting 10–20 minutes, depending on the device and treatment area. Consistency is generally more important than longer sessions.
How long until I see results?
Everyone's experience is different. Some people notice changes within a few weeks, while others may require several months of consistent use. Results depend on factors such as your wellness goals, the device used, and how regularly you follow the recommended treatment schedule.
Does it hurt?
No. Red light therapy is a non-invasive and painless treatment. Most users describe the experience as relaxing, with a gentle warming sensation depending on the device. There are no needles, medications, or recovery time required.
Is it safe?
Red light therapy has been widely studied and is considered safe for most people when used as directed. Our products are designed to use non-ionizing red and near-infrared light, which is different from UV light and does not tan or burn the skin when used according to the manufacturer's instructions. If you have a medical condition, are pregnant, have light sensitivity, or are taking medications that increase sensitivity to light, we recommend consulting your healthcare provider before use.
Can I overuse it?
More isn't always better. Using your device more frequently or for longer than recommended is unlikely to provide additional benefits and may increase the chance of temporary skin irritation or discomfort. Following the manufacturer's recommended treatment schedule is the best way to achieve consistent results.
Which device is right for me?
The best device depends on your goals.
Face Masks – Ideal for skincare and facial rejuvenation.
Hair Growth Caps – Designed to support healthy hair growth.
Panels – Great for larger treatment areas, muscle recovery, joints, and full-body wellness.
Belts & Wraps – Perfect for targeting specific areas such as the back, knees, shoulders, or elbows.