research

Clinical studies show that blue light and red light, working at specific wavelengths, act together in clearing mild to severe acne. The blue light (415nm) has an antibacterial effect whilst the red light (633nm) acts as an effective anti-inflammatory.

In the first study of its kind, conducted at Hammersmith Hospital England, Dr Chu et al evaluated the use of a mixed blue and red fluorescent lights in the treatment of acne. Download PDF of Full Study

They achieved a mean improvement of 76% in inflammatory lesion reductions ^(1.)

More recently, Dr Goldberg and Dr Russell replicated this study with the use of LEDs as the red/blue light source (633nm and 415nm respectively). They achieved an astounding mean lesion reduction of 81%.
Download PDF of Full Study

They concluded that:
"[the] combination blue and red LED therapy appears to have excellent potential in the treatment of mild to severe acne" ^(2.)

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Acne levels progressively reduced throughout the treatment period and continued to reduce for the following 8 weeks after treatment had ended (leisions were classed as papules, pustules and nodules).

LED therapy is used to activate photosensitizers to result in the formation of singlet oxygen and reactive radicles leading to bacteria destruction.