Does red light therapy actually work?
Expert Answer
Yes, for specific conditions. Multiple randomized controlled trials support red light therapy for skin rejuvenation, chronic pain, hair regrowth, and wound healing. The mechanism — photobiomodulation via cytochrome c oxidase — is well-established in peer-reviewed research.
About Red Light Therapy
Typical Cost
$25–$75
per session
Evidence Level
moderate7,000+ published studies
Red (630-660nm) and near-infrared (810-850nm) light is absorbed by cytochrome c oxidase in mitochondria, enhancing electron transport chain activity, increasing ATP production, and modulating reactive oxygen species signaling.
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