Lasers for Treatment of Androgenetic Alopecia: An In-Depth Analysis

February 2025 in “ Lasers in Medical Science ”

Aditya K. Gupta, Daniel Taylor, Keyvan Nouri

androgenetic alopecia low-level laser therapy fractional laser therapy hair follicles vascularization inflammation growth signaling AGA LLLT

Studysummary This review discusses low-level laser therapy and fractional laser therapies as alternative treatments for androgenetic alopecia, but reports limited evidence of their efficacy due to small sample sizes and potential study biases.

Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer

Recent advancements in laser technologies have increased interest in using laser therapy for androgenetic alopecia (AGA). Low-level laser therapy (LLLT) and fractional laser therapies are considered safe and effective alternatives to traditional drug therapies, which often have unwanted side effects. These therapies may stimulate hair follicles by improving vascularization, modulating inflammation, and promoting growth signaling. However, while studies show improvements in AGA markers, the evidence is limited by small sample sizes and potential biases. The efficacy of laser therapy for AGA is not fully supported due to the lack of large-scale, high-quality clinical trials and variability in devices and treatment protocols.

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