Understanding Red
Light Therapy
Discover how red and near-infrared light therapy works at the cellular level to reduce pain, accelerate healing, and improve performance.
The Science of Red Light Therapy
Photobiomodulation uses specific wavelengths of light to trigger biological effects in your cells, promoting healing and recovery.
Red Light Therapy Wavelength Spectrum
Red Light for optimal for skin regeneration and surface tissue repair.
Red Light (630–660nm)
- Skin regeneration
- Collagen production
- Superficial tissue repair
Near-Infrared (810–850nm)
- Deep tissue penetration
- Joint & muscle recovery
- Nerve regeneration
Penetrates 2–3mm into tissue
Penetrates 5–10mm into tissue
Light Output
12–15 J/cm²
Wavelengths
633nm & 850nm
Power Output
330–380 mW/cm²
Per Point
16–41 seconds
A Revolution in Healing
Discover why modern LED-based light therapy is a safer, more effective, and practical alternative to traditional lasers for a vast array of conditions.
Enhanced Safety
LEDs produce virtually no heat, eliminating the risk of tissue damage. Safe for the eyes without needing protective eyewear.
Wider Treatment Area
The wider aperture of LED probes allows for the treatment of larger body areas, making sessions faster and more efficient.
Practical & Portable
Lightweight, robust, and battery-operated, perfect for both clinical and home use, offering unparalleled convenience.
Cost-Effective
LED technology is significantly more affordable than traditional lasers, making advanced light therapy accessible to more people.
A Versatile Treatment for Numerous Conditions
By enhancing cellular energy and promoting natural healing, red light is effective across a wide range of applications.
Orthopedic
- Soft Tissue Injuries
- Arthritic Conditions
- Fracture Healing
- Nerve Regeneration
Respiratory
- Sinusitis & Rhinopathy
- Bronchospasm
- Inflammatory Lung Tissue
- Asthma Support
Dermatological
- Acne & Eczema
- Psoriasis
- Keloid Scars
- Cold Sores (Herpes)
Vascular & Wounds
- Acute & Chronic Wounds
- Venous Ulcers
- Lymphatic Drainage
- Pressure Sores
Cellular Response to Light Therapy
How Light Therapy Works
Understanding the science behind photobiomodulation therapy
LIGHT ABSORPTION
Red and near-infrared wavelengths (630-850 nm) penetrate the skin and are absorbed by cellular photoreceptors.
CELLULAR STIMULATION
The light energy boosts mitochondrial ATP production, triggering a cascade of beneficial cellular effects.
HEALING RESPONSE
Inflammation drops, circulation rises and tissue repairs faster, delivering natural pain relief.
Key Therapeutic Benefits
Reduced Inflammation
Decreases inflammatory markers and cytokines, reducing swelling and associated pain.
Improved Circulation
Increases blood flow and formation of new capillaries for better oxygen delivery.
Accelerated Repair
Stimulates collagen production and cell proliferation for faster tissue and wound healing.
Pain Relief
Reduces nerve sensitivity and increases endorphin production for natural pain relief.
What the Research Shows
Findings from peer-reviewed clinical trials and meta-analyses.
Pain Relief
22 wks
Sustained pain relief after treatment
A meta-analysis of 16 randomised controlled trials (820 patients) found that LLLT reduces acute neck pain immediately after treatment, with pain relief persisting for up to 22 weeks after the final session in chronic cases.
Chow et al. — The Lancet, 2009. DOI: 10.1016/S0140-6736(09)61522-1
Joint Pain & Mobility
29.8mm
Mean pain reduction on visual analogue scale
A systematic review of 20 trials on chronic joint disorders found a mean weighted pain reduction of 29.8mm on the VAS in favour of active LLLT, alongside improved global health status compared to control groups.
Bjordal et al. — Physiotherapy Research International, 2003. DOI: 10.1002/pri.289
Tissue Repair
+31%
Increase in procollagen production
Red light irradiation at 633nm–660nm has been shown to increase procollagen levels by 31% in treated tissue, alongside a measurable decrease in matrix metalloproteinase (MMP) activity — supporting faster wound closure and improved tissue remodelling.
Barolet et al. — Journal of Investigative Dermatology, 2009. DOI: 10.1038/jid.2008.237
Research & Evidence
Key scientific studies supporting the efficacy of photobiomodulation therapy for pain, recovery, and cellular health.
Journal of Athletic Training
Therapeutic Photobiomodulation Before Strenuous Exercise Attenuates Shoulder Muscle Fatigue
Lasers in Medical Science
High-Intensity versus Low-Level Laser Therapy in Patients with Knee Osteoarthritis
Journal of Biophotonics
Photobiomodulation in Human Muscle Tissue: An Advantage in Sports Performance?
Key Research Findings
Cellular Effects
- Increases ATP production in treated cells
- Stimulates release of nitric oxide, improving blood flow
- Reduces oxidative stress by neutralising free radicals
- Activates growth factors for tissue repair
Clinical Outcomes
- Significant reduction in chronic pain intensity (Bjordal et al., 2003)
- Sustained pain relief up to 22 weeks post-treatment (Chow et al., Lancet 2009)
- Accelerated wound closure and collagen remodelling (Barolet et al., 2009)
- Measurable reduction in muscle fatigue and recovery time (Ferraresi et al., 2016)
Light Therapy Glossary
Key terms to understand photobiomodulation therapy.
Photobiomodulation (PBM)
The scientific term for light therapy that uses red and near-infrared wavelengths to stimulate cellular function, reduce inflammation, and promote healing.
Mitochondria
The powerhouse of the cell, responsible for producing ATP energy. Mitochondria are the primary target of red light therapy, absorbing photons through cytochrome c oxidase.
Wavelength
Measured in nanometers (nm), wavelength determines the colour of light and how deeply it penetrates tissue. Photizo devices use 633nm red light, which is clinically recognised for pain relief and tissue repair.
ATP (Adenosine Triphosphate)
The primary energy carrier in cells. Light therapy increases ATP production, giving cells more fuel for repair, regeneration, and normal function.
Joules
The unit of energy delivered during treatment. Optimal therapeutic dose typically ranges from 3–15 joules per cm², depending on the condition being treated.
Nitric Oxide
A signalling molecule released during light therapy that improves blood flow, oxygen delivery, and triggers a cascade of healing mechanisms at the cellular level.
Power Density
Measured in mW/cm², this indicates the intensity of light delivered to tissue. Photizo devices operate at 330–380 mW/cm², delivering an effective therapeutic dose in a short treatment time.
Cytokines
Signalling proteins involved in the inflammatory response. Light therapy helps regulate both pro- and anti-inflammatory cytokines to support the healing process without suppressing it.
Chromophores
Light-sensitive molecules in cells that absorb photons. Cytochrome c oxidase in the mitochondria is the primary chromophore targeted by red light therapy.
Biphasic Dose Response
The principle that light therapy has an optimal dose window — too little energy has no effect, while too much can inhibit the therapeutic response. Getting the dose right is why treatment time matters.
Discover Photizo Light Therapy
Advanced red and near-infrared light therapy devices designed for specific needs.
VETCARE
Support your pet's health with specialized light therapy solutions.
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PAIN RELIEF
Alleviate chronic pain, accelerate healing, and improve mobility.
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SPORT
Enhance recovery, reduce muscle fatigue & improve performance.
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SKINCARE
Support your skin's health and healing with targeted light therapy.
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