How Light Fights Acne Bacteria

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Early light-based treatments designed to address acne used UV light to eliminate blemishes, but these have fallen out of favor due to skin-damaging side effects. Today, the most popular light-based acne treatments harness the power of blue light to safely and painlessly treat inflammatory acne without harmful side effects.

The wavelength associated with blue light is able to zero in on the P. acnes bacteria and kill them without affecting other parts of the skin. It creates heat that causes the bacteria to produce “suicide” proteins, so they essentially self-destruct. Red light may be used in conjunction with the blue light to help treat the inflammation associated with acne.

Typically, eight sessions are given over a four-week period, and each session lasts about 15 minutes. You’ll see results within this time, and you may even see improvement as early as two weeks in.

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