TLDR Microneedling can weaken hair in some AGA patients.
This article highlights a potential risk associated with microneedling in androgenetic alopecia (AGA) patients, specifically hair shaft fragility. Two cases are reported where patients experienced initial hair improvement followed by deterioration due to hair shaft breakage after repeated low-depth microneedling. Scanning electron microscopy confirmed structural damage to the hair shafts. The study suggests that repetitive microneedling may cause mechanical stress on hair fibers, leading to damage. It recommends monitoring hair-fiber integrity and adjusting treatment protocols to minimize risk while maintaining therapeutic benefits.
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