What is red light therapy?
- Red light therapy (RLT), also called photobiomodulation (PBN) or low-level laser therapy (LLLT), uses specific wavelengths of red and near-infrared light to stimulate cellular function. The light penetrates the skin and is absorbed by mitochondria, the energy-producing structures in your cells, triggering a range of biological responses. It's non-invasive, drug-free, and backed by a growing body of peer-reviewed research, though it's worth knowing up front that not every claimed benefit has equal evidence.
The wavelengths that matter
- Red light (630-700nm): Penetrates the skin's surface; best for skin health, wound healing, and surface-level tissue.
- Near-infrared (800-1060nm): Penetrates deeper into muscle, joints, and bone; better for pain, inflammation, and recovery.
What people use it for
- Skin health: Collagen production, fine lines, texture, acne, wound healing
- Pain and inflammation: Joint pain, arthritis, tendonitis, post-injury recovery
- Sleep and energy: Circadian rhythm support, fatigue, mitochondrial energy output.
- Athletic recovery: Muscle soreness, performance and faster recovery between sessions.
- Hair growth: Stimulating follicles, androgenetic alopecia, and scalp circulation
- Mental wellness: Mood, seasonal depression, cognitive function, emerging research.
Choosing a device
- Look for devices that publish their irradiance (power output) in mW/cm2
- Wavelength accuracy matters. Ask for spectral reports, not just claimed nm value.
- Panel size should match your use case: targeted devices for face/joints, full panels for full-body
- EMF levels, flicker rate, and build quality are worth researching before buying.
- Price doesn't always equal quality. Research or ask the community before committing.
Basic protocol to start with
- Distance: 6-12 inches from the panel is the most common starting point.
- Duration: 10-20 minutes per area per session.
- Frequency: 3-5x per week for most use cases.
- Consistency matters more than intensity. Daily short sessions beat sporadic long ones.
- More is not always better. Follow dosing guidelines and watch how your body responds.
