How Does Blue Light Therapy Work? Blue light therapy makes use of LED light in the blue wavelength range. It is effective in treating acne due to the propensity of blue light to kill acne-causing bacteria (Propionibacterium acnes, or P. acnes) on the skin . The treatment does not require recovery time and is a low-risk procedure.
This arrangement enables strong absorption of blue light and effective conversion of its inherent photon energy into molecules that enhance bacterial kill. Indeed, endogenous bacterial porphyrins, a byproduct in heme biosynthesis, has been exploited in phototherapy to treat bacterial infections, such as acne [12 ].
We summarize studies investigating blue light or blue-red light for acne treatment in Table 2.[10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31] In general, high-intensity narrowband light (405–420 nm) applied for 8–20 min twice weekly for four weeks was reported to reduce inflammatory acne lesion count in the 60%–70%
The combination of both red and blue LED light inside the mouth is a powerful tool in preventing future disease. LIGHT THERAPY KILLS VIRUSES. The evidence shows that violet/blue (400–470 nm) light is antimicrobial against numerous bacteria, and that it accounts for Niels Ryberg Finsen's Nobel-winning treatment of tuberculosis.
The blue light acne treatment light also does not cause tanning or skin burn. Studies have also found that using blue light therapy for 3 consecutive days has been shown to reduce bacteria in the pores by up to 99.9% with up to 80% of patients showing an overall improvement over 3 months, although 10% of patients did not find any improvement at
Blue light is lethal to bacteria and filamentous fungi although effectiveness is dependent on light purity, energy levels and microbial genus. Significance and Impact of the Study. Light from two arrays of different blue LEDs significantly reduced bacterial (Leuconostoc mesenteroides, Bacillus atrophaeus and Pseudomonas aeruginosa) viabilities.
Again, keep in mind, UVC kills viruses and bacteria, while 405 nm has only been proven to eradicate bacteria. 405 nm light works on a much slower molecular process than UVC. In lab tests with 405 nm light, it took 16 hours to kill Staph and E. Coli under lab conditions. On the other hand, it would take seconds for UVC light to do the same.
If properly designed, ultraviolet germicidal irradiation (UVGI) cleaners that use ultraviolet radiation from UV lamps may destroy indoor biological pollutants such as viruses, bacteria, and some molds that are growing on the moist interiors of HVAC surfaces (e.g., cooling coils, drain pans, or ductwork). But typical UVGI cleaners used in homes
The researchers said that these results suggest that their laser method can deactivate viruses and kill bacteria, while leaving human cells unharmed. K.T. Tsen, the Arizona State University professor who led the investigation, said that the team currently is investigating the technique for use in destroying HIV and for disinfecting blood
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does blue light kill bacteria
