Efficacy assessment for low-level laser therapy in the treatment of androgenetic alopecia: a real-world study on 1383 patients

    February 2022 in “Lasers in Medical Science
    Jun Qiu, Yanhua Yi, Lin-Lang Jiang, Yong Miao, James Yingbo Jia, Jian Zou, Zhiqi Hu
    TLDR Low-level laser therapy is about 80% effective in treating hair loss, with best results in males, those who use it for over a year, and those with scalp conditions like dandruff and rash.
    A study involving 1383 patients with androgenetic alopecia (AGA) found that low-level laser therapy (LLLT) using an FDA-cleared low-level laser helmet was nearly 80% effective. The median use times were 133 for mild AGA patients and 142 for moderate-to-severe AGA patients, equating to 38 weeks and 40 weeks respectively. Factors such as gender, use period, and scalp conditions with dandruff, rash, and itchy symptoms were associated with the treatment's efficacy. Male users, those who used the treatment for more than 180 times or for a period of 1 year, and those with scalp dandruff, rash, and itchy symptoms had better efficacy assessments. The recommended treatment regime with the low-level laser helmet was more than 1 year or 180 use times.
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