RESEARCH LIBRARY
A curated library of peer-reviewed studies on red and near-infrared light therapy — every finding linked to its source
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Showing all 16 studies
Finding: Across pooled randomized trials, red/near-infrared phototherapy applied around exercise improved muscle performance and reduced markers of muscle fatigue and damage compared with placebo.
Finding: This review concluded that red/near-infrared light delivered before or after exercise can enhance muscular performance and recovery and reduce muscle inflammation and oxidative stress, while noting that optimal dosing still needs standardization.
Finding: Treated participants showed significantly improved skin complexion and feeling, reduced wrinkles and roughness, and an ultrasound-confirmed increase in intradermal collagen density versus untreated controls.
Finding: This review describes how red and near-infrared light absorbed by mitochondrial chromophores in skin cells can stimulate healing, reduce inflammation, and improve outcomes in conditions such as photoaging, acne, and wound healing.
Finding: Fourteen nights of whole-body red-light irradiation significantly improved subjective sleep quality (PSQI), raised serum melatonin, and improved endurance performance versus placebo, with sleep and melatonin changes correlated.
Finding: Adults using a near-infrared light collar before bed reported improved sleep quality, relaxation, and mood versus sham, although objective actigraphy sleep measures did not differ between groups.
Finding: This Lancet meta-analysis found that low-level laser therapy reduced pain immediately after treatment in acute neck pain and for up to 22 weeks after treatment in chronic neck pain.
Finding: Pooled randomized trials showed that low-level laser therapy reduced pain and disability in knee osteoarthritis, with larger and longer-lasting effects when WALT-recommended dosages were used and no adverse events reported.
Finding: This mechanistic review explains how red and near-infrared light produces a pronounced anti-inflammatory effect, supporting its use for inflammatory and painful conditions affecting joints and soft tissue.
Finding: In this double-blind sham-controlled trial, 655 nm red light applied to the scalp produced a significant ~39% increase in hair counts in men with androgenetic alopecia versus sham treatment.
Finding: Across four sham-controlled trials, a low-level laser device produced statistically significant increases in terminal hair density versus sham in both men and women with pattern hair loss.
Finding: In this placebo-controlled study, a single transcranial near-infrared laser treatment to the forehead improved sustained attention and short-term memory and enhanced positive mood relative to placebo.
Finding: This review summarizes how transcranial red/near-infrared light may enhance neuronal metabolism and anti-inflammatory, antioxidant, and neurogenic responses, with early evidence across cognitive, mood, and neurodegenerative conditions.
Finding: In this small pilot trial, home transcranial 810 nm photobiomodulation was associated with improved cognitive and behavioral scores and increased cerebral perfusion and connectivity, though the tiny sample means results are preliminary.
Finding: This systematic review found no clinical evidence linking photobiomodulation to development or recurrence of malignancy, concluding it is oncologically safe for aesthetic skin use, including in patients with a cancer history.
Finding: This WALT systematic review concluded that, at recommended clinical parameters, photobiomodulation therapy is safe with respect to tumor growth and is supported for managing certain cancer-treatment side effects.
No studies in this category yet — more are being added.
Research on the modality — not specific to our devices. Studies cited evaluate red and near-infrared light therapy in general and are not claims about Royal Wellness products.
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