Why carry out this study?

There is growing interest in the use of microneedling as a standalone and adjunct therapy for hair loss disorders.

This literature reviews summarizes a body of clinical evidence on microneedling for hair loss disorders to evaluate hair loss outcomes, evidence quality, limitations in research, and areas of opportunity for future investigations.

What was learned from the study?

Microneedling improves hair loss parameters across a range of hair loss types, needling devices, needling depths, session frequencies, and combination therapies.

While evidence suggests that microneedling might improve hair loss, clinical data are of relatively low quality. With better study designs and efforts to standardize best practices, microneedling could become a staple adjuvant to US Food and Drug Administration (FDA)-approved hair loss treatments.