Faculty Opinions Recommendation of Low-Level Light Therapy for Androgenetic Alopecia: A 24-Week, Randomized, Double-Blind, Sham Device-Controlled Multicenter Trial

December 2014 in “ Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ”

Juan Ferrando, José M Mir-Bonafé

low-level light therapy androgenetic alopecia hair density hair diameter LLLT AGA

TLDR Low-level light therapy significantly increased hair density and thickness in people with hair loss, but they didn't notice a difference.

In 2013, Kim et al. conducted a randomized, double-blind, sham device-controlled trial to investigate the efficacy of low-level light therapy (LLLT) in treating androgenetic alopecia (AGA). After 24 weeks of follow-up, the study found a significant increase in hair density and diameter in the group treated with LLLT. However, the subjects' perception did not show any difference between the LLLT group and the control group. Despite these promising results, the authors suggested that further studies were needed to fully understand the efficacy of LLLT in treating AGA.

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