Photobiomodulation for the Management of Alopecia: Mechanisms of Action, Patient Selection and Perspectives

The document reviewed the use of photobiomodulation (PBM), also known as low-level laser therapy, for managing different types of alopecia, including androgenetic alopecia, alopecia areata, and chemotherapy-induced alopecia. It discussed the mechanisms by which PBM promotes hair regrowth, primarily through the use of low-powered red laser diodes. The review summarized various devices, dosimetry, animal models, and clinical trials that had been conducted to evaluate the effectiveness of PBM. It also provided criteria for selecting suitable patients for this therapy and offered perspectives on future developments in the field.