Light reaches the tissue
Red and near-infrared wavelengths reach different depths and are absorbed by light-sensitive cellular components.
Learn
Red light therapy,
explained simply.
Start with the fundamentals, then explore the detailed evidence and specifications when you want them.
How it works
Light interacts with biological processes.
Photobiomodulation is the use of specific red and near-infrared wavelengths to support cellular and biological processes. Research often focuses on how light is absorbed by cellular chromophores and influences energy-related signaling.
Cells respond
Research explores changes in mitochondrial signaling, nitric oxide and ATP-related processes.
Consistency matters
Red light therapy is generally used as a repeated routine rather than a one-time experience.
Research areas
Where red light is commonly studied.
These are broad research areas, not guarantees of individual results or substitutes for medical care.
Skin appearance + collagen
Research includes skin texture, visible signs of aging and collagen-related processes.
Exercise recovery
Studies explore muscle function, fatigue, post-exercise response and physical performance.
Joint comfort + mobility
Photobiomodulation has been reviewed in musculoskeletal comfort and mobility research.
Wound care research
Clinical literature includes tissue repair and wound-healing applications under professional care.
Cognition + mood
Emerging research explores neurological, cognitive and psychiatric outcomes.
Broader health research
Ongoing reviews examine inflammation, circulation, metabolism and other systemic outcomes.
The Zohar spectrum
Five selected wavelengths.
Every Zohar model uses 630, 660, 810, 830 and 850 nm.
Go deeper
Review the evidence guide.
Explore the Dohir Labs compilation of scientific literature and source references.
Scientific Evidence