Light is used widely in the treatment of acne. Light therapy is very beneficial and reduces the Acne lesions by 64%. Use of this therapy twice a week is very beneficial however for the better result this therapy must be done on regular basis. Different fluorescence sources are used like LED, lasers and different types of dichroic bulbs. Photo therapy is very effective for mild-moderate acne. Intense violet light is used for the treatment. Wavelength of light ranges from (405-420nm)

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