What Is Red Light Therapy?

Red light therapy, also called photobiomodulation, uses specific wavelengths of red and near-infrared light (usually in the 660 to 850 nanometer range) applied to your skin over an area of pain, injury, or muscle fatigue. Unlike lasers used for cutting or ablation, this is "low-level" light, meaning it works by stimulating your cells rather than heating or damaging tissue.

How It Helps You

Think of your cells' mitochondria as tiny energy factories that produce ATP, the fuel your body uses for every repair and recovery process. Red and near-infrared light penetrates the skin and is absorbed directly by these mitochondria, essentially recharging your cells' ability to do their job. This works by:

  • Boosting cellular energy (ATP) production, giving damaged or fatigued tissue the fuel it needs to repair itself faster

  • Increasing blood flow and nitric oxide release, delivering more oxygen and nutrients to the treated area

  • Reducing inflammation by calming the biochemical signals that drive swelling and tissue damage

  • Stimulating fibroblasts and collagen production, supporting tissue and skin repair

  • Easing pain signals through effects on nerve activity and the release of natural pain-relieving compounds like endorphins

What You Might Feel

Red light therapy is painless and non-invasive. You'll simply feel a gentle warmth from the light panel or laser device as it's held over or near the treatment area, with no needles, pressure, or discomfort involved.

What to Expect Afterward

  • Many patients notice reduced muscle soreness and stiffness in the hours to days following treatment

  • Some feel an immediate reduction in muscle guarding or pain that allows for easier movement during the same session

  • Full benefits, such as tissue healing or reduced markers of muscle damage, tend to build with consistent use over days to weeks

  • When used before activity, it may help reduce fatigue and soreness after exercise; when used after, it can speed up recovery

Common Reasons This Treatment Is Used

For pain relief and rehab:

  • Chronic pain and arthritis

  • Muscle spasm and stiffness

  • Soft tissue injuries and acute injury recovery

  • Wound healing and post-surgical recovery

For performance and recovery:

  • Reducing delayed-onset muscle soreness (DOMS) after intense training

  • Lowering biochemical markers of muscle damage (like creatine kinase) after exercise

  • Supporting faster recovery between training sessions

  • Potentially improving muscle strength, endurance, and power output with consistent use before or after workouts

This is a non-invasive, drug-free option, meaning it doesn't involve needles, incisions, or medication, making it an easy addition to a recovery, rehab, or performance program.