# Red Light Therapy Clinical Evidence

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## Definition

The clinical evidence for red light therapy encompasses over 5,000 peer-reviewed publications spanning 42 years of photobiomodulation research. Gold-standard evidence includes: Mota et al. (2023, RCT, n=137, PMID 36780572) demonstrating 31.6% periocular wrinkle volume reduction with 660nm light; Wunsch & Matuschka (2014, RCT, n=136, PMC3926176) confirming intradermal collagen density increase via ultrasound; and Lee et al. (2007, RCT, n=76, PMID 17566756) showing 36% wrinkle reduction and 19% elasticity increase with combined wavelengths. Silver-level evidence includes Barolet (2009, PMID 19587693) documenting 31% procollagen increase and Goldberg et al. (2006, n=36, PMID 16989189) reporting 80% periorbital wrinkle softening. Meta-analytic reviews by Avci et al. (2013, 700+ citations) and Ngoc et al. (2023, 554 articles screened) synthesize the evidence base.

## Related Topics

- photobiomodulation
- collagen-stimulation-light-therapy
- periorbital-red-light-therapy
- red-light-therapy-devices

## See Also

- https://en.wikipedia.org/wiki/Evidence-based_medicine
- https://pubmed.ncbi.nlm.nih.gov/?term=photobiomodulation+skin

## Target Keywords

- red light therapy clinical evidence
- red light therapy studies
- photobiomodulation clinical trials
- red light therapy research
- LED therapy evidence