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Light Dose Database

Search for red light therapy studies on specific health conditions:

Science study Red light therapy skin dose

453 nm Blue Light LED Therapy Psoriasis Regimen

Background: Blue light irradiation reduces the proliferation of keratinocytes and modulates T-cell immune response in vitro and has been shown ...
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Science study Red light therapy skin dose

633 nm and 830 nm Psoriasis LED Therapy Regimen

Background and objectives: Psoriasis is one of the major problems facing dermatologists worldwide. Planar arrays of light-emitting diodes (LEDs) have ...
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Science study Red light therapy skin dose

Blue and Red Light Equal at Treating Psoriasis, Blue Better at Reducing Redness

Randomized Controlled Trial J Eur Acad Dermatol Venereol . 2012 Feb;26(2):219-25. doi: 10.1111/j.1468-3083.2011.04039.x. Epub 2011 Mar 24. Efficacy of blue ...
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Science study Red light therapy skin dose

Blue Light, Red Light, and Topical Curcumin Treat Psoriasis PLoS One . 2015 Sep 18;10(9):e0138754. doi: 10.1371/journal.pone.0138754. eCollection 2015. Red Light Combined with Blue Light Irradiation Regulates Proliferation ...
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Science study Red light therapy skin dose

Narrow Band Ultraviolet B (NB-UVB) Psoriasis Treatment (Not a Home Treatment)

Ultraviolet B Phototherapy for Psoriasis: Review of Practical Guidelines Psoriasis is an inflammatory skin condition that affects approximately 2 % ...
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Science study Red light therapy skin dose

Non-UV 420 nm and 453 nm Blue Light Psoriasis Regimen

Background: Blue light has no known toxic effects on human skin, but reduces the proliferative capacity of keratinocytes in vitro ...
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Science study Red light therapy skin dose

Physician’s Office Psoralen UVA and UVB for Psoriasis

Psoralen-ultraviolet A treatment with Psoralen-ultraviolet B therapy in the treatment of psoriasis Researchers treated 25 psoriasis patients with psoralen ...
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Search the Photobiomodulation Database for studies on health conditions:

This is the EMF Channel database of light therapy study doses. After getting the results, click to view more study details. Only successful studies are included. 99% of the studies here are on humans, not animals. This database is a work in progress. Many thanks to Vlad for his PBM database. When the data here references his work, the detail page includes a link to the PBM spreadsheet.

About the EMF Channel Light Dose Database

Many people purchase red light therapy or neuromuscular electrical stimulation devices without knowing optimal doses for the results they want to see. The right dose is especially key to light therapies, which have optimal windows of wavelength and energy delivered. Treatment doses outside of those windows will nullify results or harm the user. I took the results from successful EMF studies when these studies included:

  • Photobiomodulation (Red Light Therapy, Blue Light Therapy, Low Level Light Therapy)
  • Transcutaneous Electromagnetic Nerve Stimulation (TENS)
  • Pulsed Electromagnetic Field (PEMF) Therapy
  • Neuromuscular Electrical Stimulation (NMES)

Many studies do not report exact dose parameters they used. They are therefore not included here, even the study reported a therapeutic result.

Table: Light Dose Parameters






Milliwatts (mW) or Watts (W)

Total Dose Energy

joules (J) = power x time = Watts x seconds


Nanometers (nm)


Hertz (Hz)

Spot Size

Squared Centimeters (cm^2)

Duty Cycle

Percentage of time light source is on per cycle

Power Density

Watts per centimeters squared (W/cm(2) = power / probe size


Joules per Centimeters Squared (J/cm^2) = total energy delivered by the probe size

Source: Turchin, Curtis. Light and Laser Therapy: Clinical Procedures 6th Edition (p. 16)