The use of low-level light therapy in the treatment of androgenetic alopecia and female pattern hair loss

This article discusses the use of low-level light therapy (LLLT) in the treatment of androgenetic alopecia (AGA) and female pattern hair loss (FPHL). Although LLLT devices claim to promote hair regrowth, few well-designed, controlled studies have yielded convincing evidence of their efficacy. Some studies have demonstrated increases in hair density after LLLT treatment, but the extent to which LLLT is effective remains unclear. Further well-designed, controlled studies are required to elucidate the efficacy of LLLT for hair regrowth.