This clinical study examined the effects of narrowband blue LED light therapy on mild to moderate inflammatory acne. Thirty participants received eight light therapy sessions over four weeks, with researchers evaluating changes in both inflammatory and non-inflammatory acne lesions.
The study found a significant reduction in inflammatory acne lesions following treatment, with improvements continuing during the follow-up period. Blue light therapy was generally well tolerated, while non-inflammatory lesions showed less noticeable change.
Researchers suggest that blue light may help target bacteria associated with inflammatory acne, potentially supporting clearer-looking skin without the use of more invasive treatments. However, this was a relatively small study, and additional research is needed to better understand optimal treatment settings, long-term results, and how blue light therapy compares with other acne treatments.
In other words, blue light therapy may offer a non-invasive way to support the management of inflammatory acne by addressing one of the factors involved in breakouts.
