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The Effects of UV Light on Acne

By Kristie Jernigan ; Updated November 28, 2018

According to the University of Chicago, acne affects about 80 percent of the population. UV light has been proven to have a positive effect on the treatment of acne. But, UV light from the sun can be dangerous. According to Health Directory, artificial UV light has a beneficial purpose, activating a natural substance in the human body called porphyrin that kills bacteria. According to the University of Chicago, there is a 90 percent improvement in the acne after three UV light sessions.

Kills Bacteria

UV (ultraviolet) light has been proven to kill bacteria on the skin of acne sufferers. According to TheHealthGuide.org, a bacterium known as propionibacterium lives on the skin of acne sufferers. This bacterium can result in a skin breakdown and can even lead to serious infections, noticeable inflammation and redness as well as pain and discomfort. UV light has been proven to help with killing this bacterium so that the skin condition and/or infection can improve. This treatment allows the body’s immune defense to regain some control and be better able to help fight off this disease.

Reduces Infection

At times, acne can become very infected. This can lead to large pustules developing on the skin or just underneath the skin. In the past the treatment for this type of condition has been oral antibiotics as well as the use of creams and salves to help cure the condition. According to TheHealthGuide.org, infected acne can not only be embarrassing but can lead to severe scarring which can be permanent and leave lasting reminders of the acne you once suffered from. UV light has been shown to improve infections, even ones that are more severe and have been harder to get under control. This is because the light therapy helps to kill bacteria that are leading to these serious infections.

Reduces Inflammation

Sometimes acne can leave a person’s skin looking very red and inflamed looking. This can be due to a worsening case of acne or from infections that have gotten just under the skin. The red and irritated skin can become very disfiguring. According to the Psoriasis Café, a resource for treatment solutions for psoriasis and acne, UV light has an anti-inflammatory effect and actually reduces swelling and irritation. This allows the person a chance to recover from a disease that has destroyed their self esteem and as a result affected their personal and social life.

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