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THE SCIENCE

How Red Light Works

Red and near-infrared light penetrate the skin and are absorbed by mitochondria — the cellular structures that produce energy. This process, called photobiomodulation, has been studied across thousands of peer-reviewed papers for its effects on skin, recovery, sleep, and cellular function.

Five Wavelengths, One Panel

Most panels deliver one or two wavelengths. Celvana panels deliver five — each studied for distinct effects on tissue at different depths. Tap any wavelength to explore the research.

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RED LIGHT

630 nm: Surface Layer

630 nm penetrates the upper layers of skin, where it is absorbed by fibroblasts — the cells responsible for collagen and elastin production. Research has examined this wavelength's role in skin function

  • Studied for effects on fibroblast activity and collagen production
  • Researched in dermatology for skin texture and tone
  • Examined for effects on superficial circulation
  • Penetration depth: approximately 1–2 mm
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RED LIGHT

660 nm: Dermal Layer

660 nm is the most-researched red wavelength in photobiomodulation. It penetrates deeper than 630 nm, reaching the dermis where the majority of collagen-producing cells reside.

  • Most-studied red wavelength in photobiomodulation research
  • Examined for effects on collagen and elastin synthesis
  • Researched for fine line and skin texture studies
  • Penetration depth: approximately 2–5 mm
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NEAR-INFRARED

810 nm: Cellular Energy

810 nm is the entry point into near-infrared wavelengths. It penetrates beneath the skin into subcutaneous tissue, where it is absorbed by mitochondria — the cellular structures that produce ATP.

  • Studied for effects on mitochondrial ATP production
  • Researched for cognitive function and cellular energy
  • Examined in studies on muscle tissue and circulation
  • Penetration depth: approximately 20–30 mm
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NEAR-INFRARED

830 nm: Deeper Tissue

830 nm penetrates deeper than 810 nm, reaching connective tissue, joint structures, and muscle. It is one of the most-studied wavelengths in research on inflammation response and tissue function.

  • Studied for effects on inflammatory response markers
  • Researched in joint and connective tissue studies
  • Examined for effects on circulation in deeper tissue
  • Penetration depth: approximately 30–40 mm
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NEAR-INFRARED

850 nm: Deep Tissue

850 nm penetrates the deepest of the five wavelengths, reaching muscle, joint, and connective tissue layers. It is the most-researched wavelength in sports medicine photobiomodulation studies.

  • Studied for effects on muscle recovery and exercise performance
  • Researched in sports medicine and physical therapy studies
  • Examined for effects on joint function and circulation
  • Penetration depth: approximately 40–50 mm

How It Works at the Cellular Level

Two mechanisms from photobiomodulation research — energy production and structural protein synthesis.

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ATP Production

Mitochondria — the cellular structures that produce energy — contain a protein called Cytochrome c oxidase. Research has examined how red and near-infrared light interacts with this protein, which has been studied for its role in ATP production.

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Collagen Synthesis

Dermal fibroblasts are the cells responsible for producing type I and type III collagen. Research has examined how red light wavelengths influence fibroblast activity, which has been studied for effects on the skin's structural protein production.

MEDICAL PERSPECTIVE

Photobiomodulation has been studied for over four decades.

More than 700 randomized controlled trials and over 4,000 peer-reviewed articles have investigated photobiomodulation — the process by which specific wavelengths of red and near-infrared light interact with cellular mitochondria. Celvana panels deliver the 630, 660, 810, 830 and 850nm wavelengths most prominent in that research.

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"Current evidence suggests that red light therapy can support and stimulate collagen production, making it a valuable adjunct in skin rejuvenation and post-procedure recovery."

Dr. Spyridon Spanakos, MD, MSc, PhD, FEBOPRASPlastic & Reconstructive Surgeon · Mediterranean Hospital of Cyprus
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"Photobiomodulation has been studied for its effects on muscular endurance and resistance exercise performance, with research examining both LED and laser-based red and near-infrared light."

Dr. Andreas Liampas, MD, MPHConsultant Neurologist · Cyprus
Explore the science behind our red light therapy

Clinical Studies

Photobiomodulation has been studied in thousands of peer-reviewed papers. The studies below are organized by application: