TLDR Channels stay open for 24 hours, making laser treatment potentially effective for hair loss.
This study aimed to investigate the duration of open channels after fractional-assisted drug delivery (FADD) using erbium yag laser in androgenic alopecia (AGA). Biopsies were taken at 1, 6, 12, 24, and 48 hours after the procedure, and histological analysis was performed. The results showed that channels remained open for up to 24 hours, which suggests that FADD using erbium yag laser could be an effective treatment option for AGA. However, further studies are needed to confirm the efficacy and safety of this treatment.
29 citations
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April 2019 in “Lasers in Medical Science” Laser and minoxidil combo promotes better hair growth than minoxidil alone, safely.
15 citations
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February 2018 in “Journal of Cosmetic and Laser Therapy” Laser-assisted drug delivery improves hair loss.
26 citations
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May 2017 in “Lasers in Medical Science” Laser therapy and hair growth factors significantly improve hair density in male baldness.
178 citations
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April 2017 in “Journal of The American Academy of Dermatology” Minoxidil, finasteride, and low-level laser light therapy effectively treat hair loss.
May 2025 in “Lasers in Medical Science” Er: YAG laser treatment can help balance scalp bacteria in hair loss patients.
January 2025 in “Journal of Cutaneous and Aesthetic Surgery” Low-level laser therapy effectively improves hair growth in androgenetic alopecia with minimal side effects.
August 2024 in “Journal of Clinical Medicine” Low-level laser therapy is the most supported treatment for hair loss, but other methods show promise.
February 2009 in “Journal of the American Academy of Dermatology” 
1 citations
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March 2019 in “Lasers in Surgery and Medicine” The conference reported improvements in muscle volume, skin cancer diagnosis, facial and vaginal rejuvenation, and hair growth using various laser treatments.
